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Synthesis, Structure and Fluorescence of a Copper(II) Complex [Cu_2(bipy)_2(Hpht)_2Cl](Hpht)(bipy=2,2'-Bipyridine,H_2pht=o-Phthalic Acid) 认领 引用 被引量：5
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作者 李强 郑发鲲 +3 位作者 蔡丽珍 陈文通 郭国聪 黄锦顺 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2005年第3期354-358,共5页
The title complex [Cu2(bipy)2(Hpht)2Cl](Hpht) (bipy = 2,2?-bipyridine, H2pht = o-phthalic acid) has been synthesized in the NaOH aqueous solution of CuCl2, Gd(NO3)3, bipy and H2pht, and its crystal structure was deter... The title complex [Cu2(bipy)2(Hpht)2Cl](Hpht) (bipy = 2,2?-bipyridine, H2pht = o-phthalic acid) has been synthesized in the NaOH aqueous solution of CuCl2, Gd(NO3)3, bipy and H2pht, and its crystal structure was determined by single-crystal X-ray diffraction method. It crys- tallizes in triclinic, space group P1, C44H31ClCu2N4O12, Mr = 970.26, a = 8.175(2), b = 16.254(4), c = 16.946(4) ?, α = 62.966(6), β = 84.833(8), γ = 84.348(8)°, V = 1993.4(8) ?3, Z = 2, Dc = 1.616 g/cm3, F(000) = 988 and μ = 1.207 mm-1. The final R = 0.0429 and wR = 0.0843 for 5682 observed reflections with I > 2σ(I). Each copper(II) atom displays a distorted square-pyramidal geometry with two nitrogen atoms of one chelate 2,2?-bipy molecule, two oxygen atoms from two different bridging carboxylate groups of Hpht- and one bridging chloride atom occupying the apical position. The two copper(II) atoms are connected by a μ2-Cl atom and two bridging Hpht- ligands in a syn-syn coordination mode to form an isolated dinuclear unit. The molecular structure is extended to a one-dimensional wavy chain through hydrogen bonds. The title complex exhibits blue fluorescent emission at 443 nm (λex = 372 nm) in the solid state at room temperature. 展开更多
关键词 copper(II) complex crystal structure synthesis luminescence
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Synthesis and Structures of Two New Molybdophosphates 认领 引用 被引量：5
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作者 LINZheng-zhong ZHANGHan-hui +2 位作者 HUANGChang-cang SUNRui-qing YANGQi-yu 《Chemical Research in Chinese Universities》 SCIE EI CAS 2003年第3期257-262,共6页
A one dimension solid and a two dimension solid consisting of polyoxoanions bridged by {CoO 3N 2} and {CoO 4} groups respectively have been synthesized by the hydrothermal method and structurally characterized by X Ra... A one dimension solid and a two dimension solid consisting of polyoxoanions bridged by {CoO 3N 2} and {CoO 4} groups respectively have been synthesized by the hydrothermal method and structurally characterized by X Ray crystallography. Each structure has the [(PO 4) 4Mo 6O 15 ] 12- cluster that is commonly observed in many molybdophosphates. In compound 1, [(PO 4) 4Mo 6O 15 ] 12- clusters are linked by {CoO 3N 2} groups to form a chain like structure, and the chains are hydrogen bonded into a network. Compound 2 is a layer structure with channnels constructed from [(PO 4) 4Mo 6O 15 ] 12- clusters and {CoO 4} groups, the organic molecules and the lattice water molecules are distributed disorderly in the interlamellar region and form strong hydrogen bonds with inorganic framework. The IR and the fluorescent spectra were investigated and discussed. 展开更多
关键词 Hydrothermal Molybdophosphates Crystal structure
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Molecular Replacement Studies of Cucurmosin from Cucurbita Moschata:Structure Homology with Trichosanthin 认领 引用 被引量：3
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作者 SHIXiao－Li EdwardX.Zhou 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2003年第2期165-168,共4页
High diffraction quality crystals of cucurmosin, a type I ribosome inactivating protein isolated from the sarcocarp of Cucurbita moschata (pumpkin), have been grown under newly optimised conditions. With in-house rota... High diffraction quality crystals of cucurmosin, a type I ribosome inactivating protein isolated from the sarcocarp of Cucurbita moschata (pumpkin), have been grown under newly optimised conditions. With in-house rotating anode X-ray source, these crystals diffract to 1.65 ?resolution which is much higher than that of the previously reported crystals that diffracted only to 3 ?resolution. The crystals belong to space group P212121 with cell parameters a = 41.5, b = 58.4 and c = 99.3 . Molecular replacement studies indicate that the cucurmosin structure is homologous to trichosanthin. The initial structural model has been obtained and the model fitting/ refinement is in progress. 展开更多
关键词 cucurmosin ribosome inactivating protein molecular replacement method tri- chosanthin
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Synthesis and Crystal Structure of 1-D Chain Copper(Ⅱ) Complex: [Cu(L)Cl_2]_n (L=2,5-Di-2-pyridyl-1,3,4-oxodiazole) 认领 引用 被引量：1
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作者 李建荣 郭国聪 +1 位作者 卜显和 黄锦顺 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2004年第2期141-144,共4页
The title complex, [Cu(L)Cl2]n (L = 2,5-di-2-pyridyl-1,3,4-oxodiazole) 1, has been obtained from the reaction of 3,6-di-2-pyridyl-1,2,4,5-tetrazine (bptz) and CuCl2?H2O in a mixture solvent of CH3CN and CH2Cl2 (L is g... The title complex, [Cu(L)Cl2]n (L = 2,5-di-2-pyridyl-1,3,4-oxodiazole) 1, has been obtained from the reaction of 3,6-di-2-pyridyl-1,2,4,5-tetrazine (bptz) and CuCl2?H2O in a mixture solvent of CH3CN and CH2Cl2 (L is generated from the metal-assisted hydrolysis reaction of bptz) and structurally characterized. It crystallizes in space group C2/c of monoclinic system with cell parameters: a = 9.812(2), b = 12.679(3), c = 11.111(2) ? b = 103.92(3)? V = 1341.6(5) 3, Z = 4, Dc = 1.776 g/cm3, Mr = 358.66, F(000) = 716, ?= 2.024 mm1 and S = 1.004. The final R = 0.0346 and wR = 0.0938 for 1011 observed reflections with I > 2(I). The Cu(Ⅱ) ion is six-coordinated by four N atoms of two L ligands and two Cl ions in a distorted octahedral geometry. The ligand L acts as a bis-bidentate ligand to bridge the Cu(Ⅱ) ions, resulting in an infinite chain structure. 展开更多
关键词 copper(Ⅱ) complex synthesis crystal structure 1-D chain
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Structure of Low Temperature Phase b-Ba_3Y(BO_3)_3 Crystal 认领 引用 被引量：3
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作者 PANShang－Ke WANGGuo－Fu 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2003年第2期187-189,共3页
Crystals of the low temperature phase b-Ba3Y(BO3)3 have been synthesized by the flux method. The structure of the title compound crystallizes in the hexagonal system, space group P63cm with the following parameters: a... Crystals of the low temperature phase b-Ba3Y(BO3)3 have been synthesized by the flux method. The structure of the title compound crystallizes in the hexagonal system, space group P63cm with the following parameters: a = 9.416(3), c = 17.536(8) ? V = 1346.6(8) ?, Ba3YB3O9, Mr = 677.36, Z = 6, Dc = 5.012 g/cm3, l(MoKa) = 0.71073 ? m = 19.409 mm-1, Flack parameter = 0.02(3), F(000) = 1764, R = 0.0714 and wR = 0.1696 for 1076 observed reflections with I > 2s(I). The compound contains two sets of YO6 octahedra, four sets of BaO9 polyhedra and three sets of BO3 planar triangles. 展开更多
关键词 synthesis crystal structure double borate
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Synthesis and Crystal Structure of [Ni(C_5H_2N_2O_4)(2,2'bipy)(H_2O)_2]·H_2O 认领 引用 被引量：2
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作者 李星 曹荣 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2002年第4期374-377,共4页
The crystal structure of [Ni(C5H2N2O4)(2, 2?bipy)(H2O)2]?H2O 1 has been determined by X-ray diffraction. Crystal data: triclinic system, space group P with a = 7.9424(3), b = 9.9417(3), c = 12.1867(3) ? a = 84.771(1),... The crystal structure of [Ni(C5H2N2O4)(2, 2?bipy)(H2O)2]?H2O 1 has been determined by X-ray diffraction. Crystal data: triclinic system, space group P with a = 7.9424(3), b = 9.9417(3), c = 12.1867(3) ? a = 84.771(1), b = 77.375(2), g = 68.993(2)? C15H18N4O8Ni, Mr = 440.7, V = 876.16(5) 3, Z = 2, Dc = 1.672 g/cm3, F(000) = 456, m(MoKa) = 1.162 mm-1, the final R = 0.0464 and wR = 0.1055 for 3026 observed reflections with I > 2s(I). In the title compound, the nickel ion is coordinated by a nitrogen atom and an oxygen atom from the orotate ligand, two nitrogen atoms from 2, 2?bipy and two oxygen atoms from the coordinated water molecules in a distorted octahedral geometry. The presence of intermolecular hydrogen bonding and p-p stacking interaction of aromatic rings from 2, 2?bipy results in a 3D structure. 展开更多
关键词 orotic acid crystal structure hydrogen bonding -stacking
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Hydrothermal Assembly and Structural Characterization of an Octamolybdate Supported Copper (Ⅰ) Tetramer: [Cu_2(1,10-phen)_2(4,4′-bpy)]_2[Mo_8O26]·4H_2O 认领 引用 被引量：2
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作者 吴传德 詹晓平 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2002年第5期525-529,共5页
A hydrothermal reaction of copper acetate with ammonium molybdate, 4,4-bpy (4,4-bipyridine) and 1,10-phen (1,10-phenanthroline) led to the formation of brown crystals of [Cu2(1,10-phen)2(4,4-bpy)]2 [Mo8O26]4H2O 1. Sin... A hydrothermal reaction of copper acetate with ammonium molybdate, 4,4-bpy (4,4-bipyridine) and 1,10-phen (1,10-phenanthroline) led to the formation of brown crystals of [Cu2(1,10-phen)2(4,4-bpy)]2 [Mo8O26]4H2O 1. Single-crystal X-ray analysis has revealed that 1 (C68H56N12O30Cu4Mo8) crystallizes in the triclinic system, space group P with a = 11.270(3), b = 13.113(6), c = 13.906(3) ? = 103.33(4), b = 98.54(2), g = 101.29(2)? V = 1920.1(1) ?3, Mr = 2542.93, Z = 1, Dc = 2.199 g/cm3, m = 2.435 mm-1, F(000) = 1240, the final R = 0.0445, wR = 0.1082 and S = 1.021 for 5052 observed reflections with I >2s(I). It consists of copper (Ⅰ) tetramer units and -[Mo8O26]4- anions, which are further attached into a three-dimensional framework through hydrogen bonding and - stacking interactions. 展开更多
关键词 heteropolymolybdate crystal structure octamolybdate copper tetramer
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Syntheses and Crystal Structures of Silver(I) Complexes by Depolymerizing [Ag(C≡CPh)]_n with a NP_3 Ligand 认领 引用 被引量：1
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作者 马震 林韵 陈忠宁 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2005年第3期339-345,共7页
Two silver(I) complexes were prepared by the reaction of [Ag(C≡CPh)]n with NP3 [NP3 = N(CH2CH2PPh2)3] or with NP3 and [Cu(CH3CN)4]ClO4. Complex 1 [(Ag2Cl(NP3)2)(Ag5- (C≡CPh)6)] contains both NP3 and PhC≡C- ligands.... Two silver(I) complexes were prepared by the reaction of [Ag(C≡CPh)]n with NP3 [NP3 = N(CH2CH2PPh2)3] or with NP3 and [Cu(CH3CN)4]ClO4. Complex 1 [(Ag2Cl(NP3)2)(Ag5- (C≡CPh)6)] contains both NP3 and PhC≡C- ligands. The complex cation is (Ag2Cl(NP3)2)+, in which two Ag(NP3)+ cations were bridged by a Cl- donor. The anion is (Ag5(C≡CPh)6)-, where five Ag+ ions are linked by six C≡CPh- to form a pentanuclear cluster. Complex 2 only contains NP3 ligand, where the silver center adopts a trigonal-bipyramidal geometry. Crystal data for 1: C133H116Ag7Cl3- N2P6, Mr = 2789.54, triclinic, space group P1, a = 13.0780(2), b = 15.3678(2), c = 31.2041(3) ?, α = 91.3928(7), β = 90.9328(8), γ = 96.0244(4)o, V = 6233.8(1) ?3, T = 293(2) K, Z = 2, Dc = 1.486 g/cm3, F(000) = 2796, μ = 1.266 mm-1, the final R = 0.0746 and wR = 0.1953 for 16475 observed reflections with I > 2σ(I). Crystal data for 2: C42H42AgClNO4P3, Mr = 861.00, trigonal, space group R3, a = 17.451(1), b = 17.451(1), c = 11.3985(7) ?, V = 3006.0(3) ?3, T = 293(2) K, Z = 3, Dc = 1.427 g/cm3, F(000) = 1326, μ = 0.731 mm-1, the final R = 0.0251 and wR = 0.0663 for 1499 observed reflections with I > 2σ(I). 展开更多
关键词 acetylide crystal structure NP3 ligand silver(I) complexes
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Structure of High Temperature Phase α-Ba_3Y(BO_3)_3 Crystal 认领 引用 被引量：2
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作者 PANShang-Ke WANGGuo-Fu 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2003年第5期550-552,共3页
The high temperature phase a-Ba3Y(BO3)3 was synthesized by Czochralski method, and its crystal structure has been determined by single-crystal X-ray diffraction. It crystallizes in the trigonal system, space group 3R ... The high temperature phase a-Ba3Y(BO3)3 was synthesized by Czochralski method, and its crystal structure has been determined by single-crystal X-ray diffraction. It crystallizes in the trigonal system, space group 3R with a = 13.028(2), c = 9.4992(2) ? V = 1396.1(5) ?, Ba3YB3O9, Mr = 677.36, Z = 6, Dc = 4.834 g/cm3, l(MoKa) = 0.71073 ? m = 18.721 mm-1, F(000) = 1764, the final R = 0.0718 and wR = 0.1640 for 1199 observed reflections with I > 2s(I). In this structure two alternate nonequivalent Y atoms form one-dimensional chains bridged by the Ba atoms with BO3 triangles which link Y(1) and Y(2), respectively. The Ba atom is surrounded by nine O atoms belonging to six BO3 triangles. 展开更多
关键词 synthesis crystal structure double borate
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Solvothermal Synthesis and Structure Characterization of a 3D Hydrogen-bonded Copper Compound [Cu(H_2dhpmc)_2]·2H_2O 认领 引用 被引量：1
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作者 罗军华 洪茂椿 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2002年第4期392-395,共4页
The solvothermal reaction of H3dhpmc (H3dhpmc = 2, 4-dihydroxypyrimidine- 5-carboxylic acid), CuCl2稨2O and NaVO3 results in the formation of a discrete mononuclear Cu(Ⅱ) complex [Cu(H2dhpmc)2]?H2O. It crystallizes i... The solvothermal reaction of H3dhpmc (H3dhpmc = 2, 4-dihydroxypyrimidine- 5-carboxylic acid), CuCl2稨2O and NaVO3 results in the formation of a discrete mononuclear Cu(Ⅱ) complex [Cu(H2dhpmc)2]?H2O. It crystallizes in monoclinic system, space group P21/c with a = 5.0497(9), b = 10.0196(6), c = 13.715(2) ? b = 96.237(1)? V = 689.8(2) 3, Z = 2, Dc = 1.973 g/cm3, ?= 1.654 mm-1, F(000) = 414, R = 0.0736 and wR = 0.1351. Each Cu(Ⅱ) is coordinated to four oxygen atoms of two 2, 4-dihydroxypyrimidine-5-carboxylic acid ligands in the equatorial position and two oxygen atoms of two water molecules in the axial position to form an axially elongated octahedral geometry. The title complex is further linked into a three-dimensional structure through the weak interactions of hydrogen bonds between the oxygen atoms and the nitrogen atoms. 展开更多
关键词 copper complex solvothermal synthesis crystal structure hydrogen bond weak interaction
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Synthesis and Structural Characterization of {[Mn(phen)_2(OAc)(H_2O)]ClO_4}_2H_2O 认领 引用 被引量：1
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作者 ZHANGXiao－Feng CHENFeng 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2003年第2期151-154,共4页
The crystal structure of the title compound {[Mn(phen)2(OAc)(H2O)]ClO4}2H2O (phen = 1,10-phenanthroline) has been synthesized and determined by X-ray diffraction. The crystal is of triclinic, space group P?with a = 12... The crystal structure of the title compound {[Mn(phen)2(OAc)(H2O)]ClO4}2H2O (phen = 1,10-phenanthroline) has been synthesized and determined by X-ray diffraction. The crystal is of triclinic, space group P?with a = 12.7955(4), b = 15.0544(4), c = 16.2183(4) , ?= 64.479(1), b =67.526(1), g = 83.582(1), C52H40Cl2Mn2N8O15, Mr = 1197.70, V = 2600.1(1) ?, Dc = 1.530 g/cm3, F(000) = 1224, = 0.666 cm-1 and Z = 2. The final refinement gave R = 0.0691 and wR = 0.1821 for 6131 observed reflections with I > 2s(I). The cell of the complex contains two uniform mono-manganese molecules [Mn(phen)2(OAc)(H2O)]ClO4 and a solvate water molecule. Four nitrogen atoms from two chelating phenanthroline ligands and one oxygen atom from acetate ligate to the MnⅡ ion, forming a distorted octahedral geometry together with one coordinated water molecule. One ClO4- anion and one water molecule exist outside the cation [Mn(phen)2(OAc)- (H2O)]+ as a counter ion and solvate molecule, respectively. 展开更多
关键词 manganese crystal structure synthesis 1,10-phenanthroline acetato
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Growth and Characterization of Crystal 认领 引用 被引量：1
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作者 LINZhou－Bin HUZu－Shu 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2002年第6期637-639,共3页
The crystal of Nd(0.06)Y(0.94)S(r)6Sc(BO3)(6) with the dimensions up to 35 mm x 28 mm x 13 mm was grown by a top-seeded solution growth method from Li6B4O9 flux. The grown crystal was characterized by X-ray powder dif... The crystal of Nd(0.06)Y(0.94)S(r)6Sc(BO3)(6) with the dimensions up to 35 mm x 28 mm x 13 mm was grown by a top-seeded solution growth method from Li6B4O9 flux. The grown crystal was characterized by X-ray powder diffraction. The optical absorption of the crystal shows that it has a strong absorption band at 8070 Angstrom, and the absorption coefficient is 2.17cm(-1) with a FWHM of 41 Angstrom, which can match with the wavelength of the diode-laser (LD) and is suitable for the LD pumping. Based on the Judd-Ofelt theory, the three parameters of line oscillator strength Omega((lambda)) (lambda = 2, 4 and 6) of the Nd3+ ion in the crystal were calculated as follows: Omega(2) = 1.194 x 10(-20), Omega(4) = 4.186 x 10(-20) and Omega(6) = 3.351 x 10(-20) cm(2), Which are relatively larger. The results indicate that the crystal Nd0.06Y0.94Sr6Sc(BO3)(6) may be a kind of high-efficient laser material for diode-pumped. 展开更多
关键词 Nd0.06Y0.94Sr6Sc(BO3)(6) crystal crystal growth X-ray powder diffraction absorption spectrum
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Synthesis and Structure of a New Dinuclear Molybdenum (I) Compound with Cyclohexanthiolate Ligand, [Mo_2(SC_6H11)_2(CO)_8] 认领 引用 被引量：1
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作者 ZHOUZhang－Feng ZHUANGBo－Tao 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2002年第6期626-628,共3页
Molybdenum(I) -compound [Mo2(SC6H11)2(CO)8]1,crystallizes in monoclinic,space group P21/c with a=9.5863(9),b=9.4469(9),c=13.869(1)A,β=99.697(2)°,V=1238.1(2)A^3,Z=2,Dc=1.734g/cm^3 ,μ=12.23cm^-1 and F(000)=644.Th... Molybdenum(I) -compound [Mo2(SC6H11)2(CO)8]1,crystallizes in monoclinic,space group P21/c with a=9.5863(9),b=9.4469(9),c=13.869(1)A,β=99.697(2)°,V=1238.1(2)A^3,Z=2,Dc=1.734g/cm^3 ,μ=12.23cm^-1 and F(000)=644.The final R=0.0455 and wR=0.1159 for 1590 observed reflections with I>2ó(I).1 possesses a rhombic bimetallic core MoS2Mo with the Mo-Mo bond length of 2.975(1) and Mo-S of 2.485(2)A。 展开更多
关键词 molybdenum( I )-compound synthesis structure
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Synthesis and Crystal Structure of a Co(II) Coordination Polymer Derived from a Flexible Bipyridyl Derivative Ligand 认领 引用 被引量：3
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作者 GONGYa-Qiong WANGRui-Hu WUBen-Lai LOUBen-Yong HANLei HONGMao-Chun 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2005年第7期836-840,739,共5页
The self-assembly of a flexible bipyridyl ligand 2,2?-bis(4-pyridylmethyle- neoxy)-1,1?-biphenylene (4,4?-bpp) with cobalt(II) center gave rise to a one-dimensional chain complex [Co(μ-4,4?-bpp)2(SCN)2?H2O]n 1 which ... The self-assembly of a flexible bipyridyl ligand 2,2?-bis(4-pyridylmethyle- neoxy)-1,1?-biphenylene (4,4?-bpp) with cobalt(II) center gave rise to a one-dimensional chain complex [Co(μ-4,4?-bpp)2(SCN)2?H2O]n 1 which has been characterized by single-crystal X-ray diffraction. The polymer crystallizes in monoclinic, space group C2/c with unit cell parameters: a = 13.1888(13), b = 24.230(2), c = 15.4218(17) ?, β = 93.291(6)o, V = 4920.1(8) ?3, Z = 4, C50H42CoN6O5S2, Mr = 929.95, Dc = 1.255 g/cm3, F(000) = 1932 and μ(MoKα) = 0.484 mm-1. The final R and wR are 0.0691 and 0.1670 for 3746 observed reflections with I > 2σ(I). 1 possesses an infinite 1-D polymeric chain structure consisting of the repeated basic square units Co2(μ-4,4?-bpp)2, where the Co(II) center acts as the joint of the square ring. The Co(II) center is coordinated in a slightly distorted octahedral geometry with four nitrogen atoms from four different 4,4?-bpp ligands in the equatorial plane and two trans thiocyanate ligands occupying the axial positions, preventing the formation of an extended framework. 展开更多
关键词 cobalt(II) coordination polymer crystal structure
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Syntheses, Structures and Magnetic Properties of Two Co(II) Coordination Polymers with 2,5-Pyridine Dicarboxylic Acid 认领 引用 被引量：2
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作者 XUYing YUANDa-Qiang LINZhen-Zhong WUBen-Lai LUOJun-Hua HONGMao-Chun 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2004年第11期1230-1237,共8页
The hydro(solvo)thermal reactions of cobalt powder or its chloride with 2,5- pyridine dicarboxylic acid (H2PYDC) yielded two new complexes: [Co(II)2(PYDC)2(H2O)2- (H2O)4]n 1 and {Co(II)[NH2(CH3)2]2(PYDC)2}n 2. It is o... The hydro(solvo)thermal reactions of cobalt powder or its chloride with 2,5- pyridine dicarboxylic acid (H2PYDC) yielded two new complexes: [Co(II)2(PYDC)2(H2O)2- (H2O)4]n 1 and {Co(II)[NH2(CH3)2]2(PYDC)2}n 2. It is observed that the reactive solvents result in different connectivity modes of ligand and diverse dimensional extension of crystal structures. The correlation between structure and magnetic property will be discussed in this paper. Crystal data for 1: space group P1, a = 7.0419(17), b = 8.937(2), c = 9.6182(19) ?, α = 91.532(4), β = 99.869(10), γ = 107.889(11)o, V = 565.5(2) ?3, Z = 1, Dc = 1.845 g/cm3, μ = 1.56 mm-1, F(000) = 322 , R = 0.0505 and wR = 0.1580; and those for 2: space group C2/c, a = 14.9075(6), b = 8.2523(3), c = 16.9643(2) ?, β = 100.982(2)o, V = 2048.75(11) ?3, Z = 4, Dc = 1.560 g/cm3, μ = 0.892 mm-1, F(000) = 996, R = 0.0443 and wR = 0.1134. 展开更多
关键词 hydrothermal solvothermal cobalt magnetic 2 5-pyridine dicarboxylic acid
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Synthesis and Characterization of a Two-dimensional Cadmium(II) Compound Involving Covalent and Hydrogen Bonds 认领 引用 被引量：2
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作者 WANGRui-Hu HANLei LINZheng-Zhong LUOJun-Hua HONGMao-Chun 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2004年第4期403-406,共4页
A two-dimensional hydrogen-bonded cadmium(II) compound [Cd(dapm)2- (CH3COO)2(H2O)2] (dapm = diaminodiphenylmethane) has been synthesized and characterized by single-crystal X-ray diffraction analysis. It crystallizes ... A two-dimensional hydrogen-bonded cadmium(II) compound [Cd(dapm)2- (CH3COO)2(H2O)2] (dapm = diaminodiphenylmethane) has been synthesized and characterized by single-crystal X-ray diffraction analysis. It crystallizes in monoclinic, space group C2/c with a = 27.572(3), b = 5.5064(5), c = 23.310(2) , = 124.785(1)o, C15H19Cdo.5ON2O3, Mr =331.52, V = 2906.6(5) ?, Z = 4, Dc = 1.515 g/cm3, F(000) = 1368 and = 0.801 mm-1. The final R = 0.0403 and wR = 0.1014 for 1795 observed reflections with I≥4(I). The centrosymmetric Cd(II) is six- coordinated in a distorted octahedral geometry, and the dapm in a trans mode acts as a monoden- tate ligand. The intermolecular hydrogen bonds among coordinated aqua molecules with coordi- nated acetate oxygen atoms and uncoordinated dapm nitrogen atoms form a two-dimensional supramolecular framework. 展开更多
关键词 crystal structure hydrogen bonding cadmium complex
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Synthesis and Crystal Structure of an Incomplete Cubane-type Mo_3S_4 Cluster with the N-N-O Type Tridentate Ligand: {Mo_3S_4[NH_2CH_2CH(O)CH_2NH_2]_3}(DTP)·(H_2O)_2·(DMF) 认领 引用 被引量：1
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作者 HURui-Feng QINYe-Yan KANGYao ZHANGJian WENYi-Hang LIZhao-Ji CHENJiu-Tong YAOYuan-Gen 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2005年第7期751-754,735,共4页
A new cluster {Mo3S4[NH2CH2CH(O)CH2NH2]3}(DTP)?(H2O)2?(DMF) (DTP = diethyldithiophosphate) has been synthesized via ligand substitution reaction of Mo3S4(DTP)4(H2O) with an alkaline ligand 1,3-diamino-2-propanol(DAPRO... A new cluster {Mo3S4[NH2CH2CH(O)CH2NH2]3}(DTP)?(H2O)2?(DMF) (DTP = diethyldithiophosphate) has been synthesized via ligand substitution reaction of Mo3S4(DTP)4(H2O) with an alkaline ligand 1,3-diamino-2-propanol(DAPROH) in a mixed organic solvent, and its crys- tal structure was determined with the following data: Mo3S6PC16H48O8N7, Mr = 977.76, triclinic, space group P1, Z = 2, a = 10.319(2), b = 12.843(3), c = 15.335(3) ?, α = 65.26(3), β = 82.18(3), γ = 70.67(3)o, V = 1741.7(6) ?3, Dc = 1.864 g/cm3, μ = 1.517 mm-1, F(000) = 988, the final R = 0.0794 and wR = 0.2111 for 6318 observed reflections (I>2σ(I)). The structure analysis indicates that all DTP ligands of Mo3S4(DTP)4(H2O) are replaced and each DAPRO molecule acts as a tri- dentate ligand chelating to each Mo atom of the Mo3S4 core. Different from the precursor, the clus- ter symmetry is elevated to C3. In addition, the UV-spectrum of the title compound was measured. 展开更多
关键词 molybdenum-sulfur cluster crystal structure alkaline ligand ligand substitution reaction
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A Cadmium(II) Coordination Polymer: Crystal Structure and Fluorescent Property of [CdCl_2(4,4'-bipyridine)]_ ∞ 认领 引用 被引量：1
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作者 LOUBen-Yong WANGRui-Hu XUYing YUANDa-Qiang ZHOUYou-Fu HONGMao-Chun 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2004年第7期747-750,共4页
The reaction of L-histidine, CdCl22.5H2O and 4,4-bipyridine in methane/water gave rise to a two-dimensional coordination polymer [CdCl2(4,4-bipyridine)] which has been characterized by single-crystal X-ray diffraction... The reaction of L-histidine, CdCl22.5H2O and 4,4-bipyridine in methane/water gave rise to a two-dimensional coordination polymer [CdCl2(4,4-bipyridine)] which has been characterized by single-crystal X-ray diffraction. The polymer crystallizes in the orthorhombic sys- tem, space group Cmmm with a = 12.083(7), b = 11.771(7), c = 3.781(2) ? V = 537.8(6) ?, Z = 2, C10H8N2CdCl2, Mr = 339.48, Dc = 2.097 g/cm3, F(000) = 328 and (MoK? = 2.490 mm-1. The final R = 0.0658 and wR = 0.1398 for 257 observed reflections with I≥2(I). 展开更多
关键词 cadmium(Ⅱ) coordination polymer crystal structure fluorescence
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Spectral Parameters of Nd3+ in the Nd3+:GdMgB_5O10 Crystal 认领 引用 被引量：1
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作者 FANJun-Mei LINZhou-Bin ZHANGLi-Zhen HUZu-Shu WANGGuo-Fu 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2005年第4期419-423,共5页
The absorption and emission spectra of Nd3+:GdMgB5O10 crystal were inves- tigated. Based on Judd-Ofelt theory the three parameters of oscillator strength were obtained as follows: ?2 = 2.099×10-20 cm2, ?4 = 4.599... The absorption and emission spectra of Nd3+:GdMgB5O10 crystal were inves- tigated. Based on Judd-Ofelt theory the three parameters of oscillator strength were obtained as follows: ?2 = 2.099×10-20 cm2, ?4 = 4.599×10-20 cm2 and ?6 = 5.139×10-20 cm2. The fluorescence branch rations were also obtained: β1 = 0.424, β2 = 0.474, β3 = 0.094 and β4 = 0.005. The radiative lifetime is 416 μs and quantum efficiency ηc 9.13%. The emission cross section σp (1.06 μm) is 4.38×10-19 cm2. 展开更多
关键词 spectral parameters Nd3+:GdMgB5O10 crystal Judd-Ofelt theory
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A New One-dimensional Chain Compound Constructed by {Mo_8O28} units via Corner-sharing 认领 引用 被引量：1
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作者 YUYa-Qin YANGWen-Bin WUChuan-De LUCan-Zhong 《Chinese Journal of Structural Chemistry》 SCIE CAS 北大核心 2005年第2期214-218,共5页
The title compound, {(H3O)4(NH4)4[Mo8O28]?2H2O}n 1, has been synthesized from the reaction of Zn(OAc)2 and (NH4)6Mo7O24?4H2O in aqueous solution at ambient tempe- rature, and its crystal structure was determined by X-... The title compound, {(H3O)4(NH4)4[Mo8O28]?2H2O}n 1, has been synthesized from the reaction of Zn(OAc)2 and (NH4)6Mo7O24?4H2O in aqueous solution at ambient tempe- rature, and its crystal structure was determined by X-ray single-crystal analysis with the following crystallographic data: monoclinic system, space group P21, a = 9.5234(6), b = 11.3235(8), c = 14.8812(10) ?, β = 107.467(2)o, V = 1530.77(18) ?3, Z = 4, F(000) = 1336, μ = 3.293 mm-1 and Dc = 3.037 g/cm3. The final R = 0.0619 for 2691 observed reflections (I > 2σ(I)). X-ray crys- tal structure analysis showed that the novel one-dimensional chain compound is built up by basic {Mo8O28} units via single μ2-O, and such chains are further linked into a three-dimensional net- work by hydrogen bonds. 展开更多
关键词 polyoxomolybdate octamolybdate one-dimensional chain
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