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Synthesis and Structure of a 〔Mo_3S_7]~(3.5+) Complex〔Mo_3(μ_3-S)(μ_2-S_2)_3 (Et_2dtc)_3〕_2Cl 认领 引用
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作者 朱红平 刘秋田 《Chinese Journal of Structural Chemistry》 SCIE CAS 1998年第2期142-146,共5页
The title complex, was pre-pared by using (NH4)2MoS4 as a starting material. X-ray crystal structural analysis ofthe complex gave the following parameters: In this complex, weak bond-ing of Cl- to three axial sulfur a... The title complex, was pre-pared by using (NH4)2MoS4 as a starting material. X-ray crystal structural analysis ofthe complex gave the following parameters: In this complex, weak bond-ing of Cl- to three axial sulfur atoms was found with average distance of 2. 717 TheCl atom locates at a special position and is bonded weakly by two cluster cations, indi-cating the oxidation number of + 1/2 for the cluster cation. 展开更多
关键词 complex structure synthesis Mo-cluster
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Novel Poly m eric Transition Metal Co m plexes Having1D Chain and 3D Networks Structures 认领 引用
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作者 洪茂椿 曹荣 《Chinese Journal of Structural Chemistry》 SCIE CAS 1999年第5期384-392,共9页
The syntheses and structures of eleven novel polymeric transition metal complexes having one dimensional chain structures or three dimensional networks are summarized. They are prepared from the controlled assembling ... The syntheses and structures of eleven novel polymeric transition metal complexes having one dimensional chain structures or three dimensional networks are summarized. They are prepared from the controlled assembling reactions in organic solvents and characterized by X ray diffraction analyses. The spectroscopic or magnetic properties of some complexes are studied. 展开更多
关键词 polymeric metal complex linear chain structure 3D network
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Synthesis and Crystal Sturcture of a New Praseodymium(Ⅲ)polym煳x:[ 认领 引用
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作者 毛江高 宋玲 《Chinese Journal of Structural Chemistry》 SCIE CAS 1999年第1期4-8,共5页
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Preparation and Crystal Structure of PrNb_5O14 认领 引用
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作者 毛江高 庄鸿辉 《Chinese Journal of Structural Chemistry》 SCIE CAS 1996年第1期35-39,共5页
Single crystals of PrNb_5O14 were prepared by solid state reaction from PrOBr/Nb_2O_5/NH_4Br system at 950℃. Compound PrNb_5O14 (M_r=829. 43) crystallized in orthorhombic Pmmn (No. 59) with cell parameters of a... Single crystals of PrNb_5O14 were prepared by solid state reaction from PrOBr/Nb_2O_5/NH_4Br system at 950℃. Compound PrNb_5O14 (M_r=829. 43) crystallized in orthorhombic Pmmn (No. 59) with cell parameters of a=7. 758 (3), b= 20. 092(6), c=6. 241(1) A, V=972. 8(5) A￣3: Z=4; F(000)=1504; Dc=5. 66 g/cm￣3;μ(MoKa)=104. 39 cm￣(-1).The final structure factors are R=0. 063 and R_w=0. 073 respectively for 1747 observed reflections with I>3σ(I). The structure consists of two types of NbO polyhedra, Nb (1) and Nb (3) pentagonal bipyramids and Nb (2)O6 octahedron. Chains of edge sharing pentagonal NbO_7-bipyramids are connected by corner-sharing NbO_6-octahedra. Tunnels running in a-direction are created by this framework of NbO_6 and NbO_7-polyhedra. Praseodymium atoms are 9-coordinated with tricapped trigonal prism polyhedron, and are located in these tunnels at levels between the niobium atoms. 展开更多
关键词 crystal structure preparation praseodymium niobate
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Structure Refinement of Samarium Tritellurides 认领 引用
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作者 池利生 邓水全 《Chinese Journal of Structural Chemistry》 SCIE CAS 1996年第4期267-269,共3页
The title compound was prepared from the corresponding elements(Sm, Te) using iodine as transport agent. The crystal structure was determined by the single crystal X-ray diffraction techniques with the crystal data as... The title compound was prepared from the corresponding elements(Sm, Te) using iodine as transport agent. The crystal structure was determined by the single crystal X-ray diffraction techniques with the crystal data as follows: SmTe3,M_r= 533. 15, orthorhombic. Cmcm, a=4. 323(2), b= 25. 613(3),c=4. 335(2) A,V=480. 0 A￣3, Z=4, D_x=7. 38 g/cm￣3, F(000) =872,μ= 300. 2 cm￣(-1), R=0. 061,Rw.=0. 066 for 660 observed(I≥3σ(I)) unique reflections. The compound is isostructural with NdTe_3￣[1]. 展开更多
关键词 synthesis telluride crystal structure
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Synthesis and Structure of Propionate-bridged Mixed-metal Cluster Compound: MoW_2O_2 (O_2CC_2H_5)_6 (H_2O)_3 ZnBr_4·4H_2O 认领 引用 被引量：3
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作者 刘晃 徐立 《Chinese Journal of Structural Chemistry》 SCIE CAS 1994年第1期52-55,共4页
The heterotrinuclear cluster compound [MoW_2O_2 (O_2CC_2H_5 )_6-( H_2O)_3] ZnBr4·4H_2O was prepared by the redox reaction of Mo (CO)_6 with Na_2W_O4 in propionic anhydride. The crystal is monoclinic of space grou... The heterotrinuclear cluster compound [MoW_2O_2 (O_2CC_2H_5 )_6-( H_2O)_3] ZnBr4·4H_2O was prepared by the redox reaction of Mo (CO)_6 with Na_2W_O4 in propionic anhydride. The crystal is monoclinic of space group P2/c with a =16. 334(4) , b= 9. 657(5) , c=19. 889(9) ,β= 139. 79 (5)°,V= 2026 (2) ￣3 , Z=2 , D_c=2. 30 g/cm￣3 μ(MoKa) =106. 6 cm￣(-1) ,F(000)=1176 ,final R=0. 065 and R_ω=0. 072 for 1964 reflections with I≥3σ(I). In the structure of cation [MoW_2O_2 (O_2CC_2H_5 )_6 (H_2O)_3]￣(2+) molybdenum and tungsten atoms are statistically disordered. Three metal atoms form an equilateral triangle with the distance of M-M being 2. 735. 展开更多
关键词 synthesis crystal structure mixed-metal cluster Mo-W propionate compound
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Synthesis,Structure,Characterization and Electrochemistry of a New Din 认领 引用
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作者 孙好芬 庄伯涛 《Chinese Journal of Structural Chemistry》 SCIE CAS 1999年第1期32-37,共6页
关键词 合成 结构 钨配合物 二元配合物 电化学 红外光谱 质谱
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Synthesis and Crystal Structure of Mixed Mo-W Cubane-type Cluster Compound [Mo_2W_2S_4 (μ-OAc)_2 (dtp)_3(dtpH)]·CH_2Cl_2 认领 引用
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作者 陈秋华 卢绍芳 《Chinese Journal of Structural Chemistry》 SCIE CAS 1995年第2期97-101,共5页
The cubane-type mixed Mo W cluster[Mo2W2S4 (OAc)2(dtp)3 (dtpH)]·CH2Cl2 (dtp= (EtO)2PS2, dtpH = (EtO)2PS (SH) has been prepared by reduction and addition reaction between dinuclear W2S4 (dtp)2 and Mo(CO)6 in HOAc ... The cubane-type mixed Mo W cluster[Mo2W2S4 (OAc)2(dtp)3 (dtpH)]·CH2Cl2 (dtp= (EtO)2PS2, dtpH = (EtO)2PS (SH) has been prepared by reduction and addition reaction between dinuclear W2S4 (dtp)2 and Mo(CO)6 in HOAc and Ac2O solution in the presence of dtp-ligand. Crystallographic data: Mr=1632. 71,monoclinic, space group P2, a=13. 146 (8), b=11. 961 (5),c=17. 157 (9) β =105. 99(8)°, V=2593(8), Z=2, Dc=2. 09 /cm￣3 ,λ(MoKa) =0.71073 ,F (000)=1578, final R=0. 029, Rw = 0. 041 for 3765 unique intensity data [I≥4σ (I)]. The result of X-ray study and elemental analysis indicated that, in the crystal lattice, molybdenum and tungsten are statistically distributed in the metal positions each with 0. 5 fractional occupation. 展开更多
关键词 synthesis crystal structure Mo-W cluster cubane-type cluster
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Studies on the V—Cu—S Heterometallic Cluster Compounds (2).Crystal Str 认领 引用 被引量：4
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作者 郑发鲲 余秀芬 《Chinese Journal of Structural Chemistry》 SCIE CAS 1994年第5期397-401,共5页
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Synthesis and Crystal Structure of a Binuclear Cobalt( Ⅱ) Carboxyla 认领 引用
10
作者 崔勇 龙德良 《Chinese Journal of Structural Chemistry》 SCIE CAS 1999年第1期9-13,共5页
关键词 合成 晶体结构 二元配合物 钴 红外光谱 喹啉 三甲基乙酸
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Synthesis and Crystal Structure of Δ^6—4—Amino—5,6—diphenyl—5—hydroxy 认领 引用
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作者 邓水全 林振光 《Chinese Journal of Structural Chemistry》 SCIE CAS 1994年第1期40-44,共5页
关键词 合成 缩合反应 晶体结构 席夫碱 Δ6-4-氨基-5,6-二苯基-5-羟基-1,2,4-三氮杂-环己烯-3-硫酶
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Quasi-aromaticity in Cluster Chemistry Ⅲ. Localized Molecular Orbital Study on Electron-rich Cobalt-sulfur Cluster Compounds[Co_6(μ_3-X)_8L_6]￣(n+)(X=S,Se;L=PPh_3,PEt_3,CO;n=0,1) 认领 引用
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作者 陈志达 刘春万 《Chinese Journal of Structural Chemistry》 SCIE CAS 1994年第2期146-154,共9页
The localized molecular orbitals and energy levels for [Co_6 (μ_3-S)_8 (PH_3)_6]￣(n+)(n=0, 1) as model molecules of the electron-rich [Co_6 (μ_3-S)_8 (PPh_3)_6]￣(n+) (n=0,1) cluster compounds have been calculated ... The localized molecular orbitals and energy levels for [Co_6 (μ_3-S)_8 (PH_3)_6]￣(n+)(n=0, 1) as model molecules of the electron-rich [Co_6 (μ_3-S)_8 (PPh_3)_6]￣(n+) (n=0,1) cluster compounds have been calculated by using Edmiston-Ruedenberg energy localization scheme under the spin-unrestricted CNDO/2 approximation. It is shown that the cluster skeletons of these two isostructural molecules consist of the edge-localized two-centered two-electron (Co-S) bonds plus a pair of the skeleton electrons delocalized on the whole cluster core,leading an extra stability of the cluster core.The one-electron oxidation for the neutral molecule gives rise to a one-electron σ (Co-Co) bond.which further resonates among the three diagonal lines of the {Co_6} octahedron. The comparison between [Co_6 (μ_3-S)_8(PPh_3)_6] and [Co_6(μ_3-CO)_8(CO)_6]￣(4-) indicates that the latter possesses face-localized bridging-bonds which are further delocalized on the whole surface of the cluster octahedron by the back-donation bonds from the lone electron pairs on the Co atoms to the capping carbonyl CO ligands. The structural features of the series of the [Co6(μ_3-X)_8L_6]￣(n+)(X =S, Se; L=PPh_3,PEt_3, CO;n=0, 1) cluster compounds are briefly rationalized on the basis of the localization description as well. 展开更多
关键词 quasi-aromaticity hexanuclear cobalt cluster localized molecular orbital electronic delocalization
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EPR Study of a New Crystal of the Binuclear Copper(Ⅱ) Cluster Compound- Cu_2(α-C10H_7CH_2CO_2)_4-(DMF)_2 ·(DMF)_2·H_2O 认领 引用
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作者 孙琼丽 Han Shi－Yi 《Chinese Journal of Structural Chemistry》 SCIE CAS 1994年第1期9-15,共7页
In this paper, single crystal EPR study of a new binuclear copper (Ⅱ) cluster compound-[Cu2(α-C(10) H7CH2CO2)4 (DMF)2]·[DMF]2·H2O](DMF= (CH3)2NCOH) at room temperature is reported. The lines of △Ms=±... In this paper, single crystal EPR study of a new binuclear copper (Ⅱ) cluster compound-[Cu2(α-C(10) H7CH2CO2)4 (DMF)2]·[DMF]2·H2O](DMF= (CH3)2NCOH) at room temperature is reported. The lines of △Ms=±1 allowing transition and △M=2 forbiding transition are shown in EPR spectra. The experimental data are consistent with the calculated results by the leastsquares fitting prograrn in three principal planes of g and D tensors. The spin Hamiltonian parameters are as follows: gx=2. 1482, gy=2. 0529 ,gz=2. 3905, D= 0. 348 cm￣(-1) and E =0. 01 cm-1. The diagrams of the energy levels have been obtained when the magnetic field is oriented to three principal axes. The polycrystal EPR spectra have been measured at room temperature and 77K, respectively.and the parameters of these spectra are given (g∥= 2. 094, g⊥= 2. 425, D= 0. 37 cm-1,E=0). The parameter of the isotropic magnetic exchange interaction J=-254cm-1 is determined, and that of the anisotropic magnetic exchange J1=-153 cm-1 is calculated. The average magnetic susceptibility of the polycrystal sample χ= 1. 39 ×10-6 (c. g. s) has been measured by Faraday powder method. Thus the average magnetic mornent μ=1. 43 B. M. can be calculated. It is shown that the exchange interactions between the metal ions of the binuclear copper(Ⅱ) cluster compound are confirmed antiferromagnetic In nature. 展开更多
关键词 EPR spectroscopic binuclear copper cluster spin parameter magnetic exchange
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Synthesis and Structure of[HOCH_2CH_2N(CH_3)_3]_4[Cu_4OCl10] 认领 引用
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作者 吴鼎铭 黄小荥 《Chinese Journal of Structural Chemistry》 SCIE CAS 1994年第5期385-388,共4页
The title compound,C10H56Cl10Cu4N4O5,Mr=1041.40,has been prepared by reaction of CuCl and choline chloride in CH3CN.It crystallizes in the monoclinic system,space group C2/c with a= 22.55 (1),b=10.442(2),c=18.742(3),... The title compound,C10H56Cl10Cu4N4O5,Mr=1041.40,has been prepared by reaction of CuCl and choline chloride in CH3CN.It crystallizes in the monoclinic system,space group C2/c with a= 22.55 (1),b=10.442(2),c=18.742(3),β=113.40(3)°,V=4050(3)3,Z=4,λ(MoKα)=0.71069,F(000)=2120,Dc=1.71 g/cm3 and μ(MoKα)=27.81 cm-1.The structure was solved by direct methods and refined by full-matrix least squares to final R and Rω values:0.070 and 0.076,respectively.The tetranuclear anion contains a central oxide ion coordinated tetrahedrally to four copper(Ⅱ) ions;the copper(Ⅱ) ions are bridged in pairs by six chloride ions.The remaining four chloride ions completed a trigonal-bipyramidal coordination sphere around each copper(Ⅱ) ion.There are two crystallographically independent and virtually identical cations in each asymmetrical unit. 展开更多
关键词 Cu_4] complex synthesis crystal structure
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Crystal Structure of La_4V_5Si_4O22──A Mixed-Valence Lanthanum Vanadium (Ⅲ/Ⅳ) Oxosilicate 认领 引用
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作者 陈久桐 黄锦顺 《Chinese Journal of Structural Chemistry》 SCIE CAS 1995年第4期314-317,共4页
The title compound was prepared by solid state reaction of LaCl_3/V inan evacuated silica tube where the silicon came from the reaction tube. The compoundcrystallizes in monoclinic space group C2/m with cell dimension... The title compound was prepared by solid state reaction of LaCl_3/V inan evacuated silica tube where the silicon came from the reaction tube. The compoundcrystallizes in monoclinic space group C2/m with cell dimensions of a=13. 482 (7), b=5. 604(3), c=11. 091(3) A, β=100. 44(3)°, V=824(1) A3, Mr= 1274. 66 , Dc=5. 14 g/cm3, F(000) = 1150, μ- 13. 20 mm-1 and Z=2; final R=0. 061, Rw=0. 054for 1037 observed reflections (Ⅰ>3σ(Ⅰ) ) . It is isostructural with quasi-ZD Pr_4V_5Si_4O22compound with the Ⅴ-Ⅴ distances across the shared VO6 octahedral edges of 2. 802 Aand vanadium ions show mixed-valence(Ⅲ/Ⅳ) with an average value of+ 3. 2. 展开更多
关键词 lanthanum vanadium oxosilicate crystal structure mixed-valence
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SYNTHESES OF TUNGSTEN COMPLEXES WITH o-MERCAP-TOPHENOL.CRYSTAL STRUCTURE OF (Ph_4P)[WO(OMe)(mp)_2] 认领 引用
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作者 胡永韩 陈学太 《Chinese Journal of Structural Chemistry》 SCIE CAS 1993年第5期401-404,共4页
Reaction of WCl6, mpH2 o-mercaptophenol) and MeONa in the presence of Ph4PBr gave complexes (Ph4P)[W(mp)3] (1) and (Ph4P) CWO(OMe) (mp)2] (2). Crystal data complex (2), C37H31O4PS2W, Mr = 818. 61, monoclinic, space gr... Reaction of WCl6, mpH2 o-mercaptophenol) and MeONa in the presence of Ph4PBr gave complexes (Ph4P)[W(mp)3] (1) and (Ph4P) CWO(OMe) (mp)2] (2). Crystal data complex (2), C37H31O4PS2W, Mr = 818. 61, monoclinic, space group P2/a, a=26. 555(3), b=9. 634(1), c=13. 523(7) A. β=94. 68 (2)°, V=3448. 1 A3. A=1. 58 g/cm3, Z = 4. λ(MoKα)=0. 71073 A , μ= 36. 2 cm-1, F(000) = 1624, T=296K, final R(Rw) = 0. 068(0. 070) for 3929 observed reflections. The WO4S2 core is arranged in a distorted octahedral geometry. 展开更多
关键词 Synthesis Crystal Structure Tungsten Complex
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OXIDATION DECARBONYLATION OF NH_4[Mo(CO)_5I]: SYNTHE-SES AND CRYSTAL STRUCTURES OF CMo(S_2CNC_4H_8)_4]I_3 · C_7H_8 and Mo_2S_2O_2(S_2CNC4H_8)_2 认领 引用
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作者 郑碧仙 黄锦顺 《Chinese Journal of Structural Chemistry》 SCIE CAS 1993年第5期359-363,共5页
Both of the title complexes were produced by oxidative decarbony-lation of NH4 CMO (CO)5I]. The complexes CMo(S2CNC4H8)4]I3 ?C7H8(1) and Mo2S2O2 (S2CNC4H8)2(2) both crystallize in triclinic, space group P1 with cell d... Both of the title complexes were produced by oxidative decarbony-lation of NH4 CMO (CO)5I]. The complexes CMo(S2CNC4H8)4]I3 ?C7H8(1) and Mo2S2O2 (S2CNC4H8)2(2) both crystallize in triclinic, space group P1 with cell dimensions for (1) : a=13. 554(4), b=13. 620(4), c= 13. 058 (4) A , α=95. 58 (3), β=105. 38(2), γ=115. 49(2)°,V = 2035(1) A3, Z=2, Dc=1. 89 g. cm-3, final R=0. 054 and Rw = 0. 062 for 2926 observed reflections; and for (2): a = 8.730(2), b=16.592(6), c = 6. 688(2)A, α=97. 67(3), β=98. 10(2), γ=80. 26(2)% V = 939. 2(5) A3, Z = 2, Dc = 2. 05 g. cm-3, final R = 0. 038 and Rw = 0. 046 for 2248 observed reflections. The Mo(V) atom is bonded to eight S atoms in distorted dodecahedron for (1). The Mo atoms in compound (2) are bridged by two S atoms and each Mo atom is coordinated by two S atoms from S2CNC4H8 and one O atom to form distorted tetragonal pyramid. 展开更多
关键词 Synthesis Crystal Structure Mo-S Complex
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SYNTHESIS AND CRYSTAL STRUCTURE OF A NEW BINUCLEAR CUPRUM COMPLEX, [(CuCl)_2(η~2-dppe)_2(μ-dppe)]·2CH_2C1_2 认领 引用
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作者 林永寿 林立 《Chinese Journal of Structural Chemistry》 SCIE CAS 1993年第4期286-288,共3页
C80H76Cl6Cu2P6,Mr=1563.13,monoclinic,P21,a=12.608(9),b=21.729(7),c=14.473(8)A.,β=105.34(5)°,V=3823.6A3,Z=2,Dc=1.28 g.cm-3,F(000)=1528,μ=8.6 cm-1,The final R and Rw are 0.076 and 0.083 respectively for 4418 obse... C80H76Cl6Cu2P6,Mr=1563.13,monoclinic,P21,a=12.608(9),b=21.729(7),c=14.473(8)A.,β=105.34(5)°,V=3823.6A3,Z=2,Dc=1.28 g.cm-3,F(000)=1528,μ=8.6 cm-1,The final R and Rw are 0.076 and 0.083 respectively for 4418 observed reflections with I≥3σ(I).There is a center of inversion in the molecule. 展开更多
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STRUCTURAL CHARACTERS OF SEVERAL Pt (Ⅱ) COMPLEXES CONTAINING BULKY PHOSPHINE LIGANDS PR_3(R = Ph or Cyclo-hexyl, C_6H11) 认领 引用
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作者 施剑秋 程国宝 《Chinese Journal of Structural Chemistry》 SCIE CAS 1993年第2期111-116,共6页
The main structural features of the five Pt(Ⅱ ) complexes containing two PR3 ligands are summarized. The influence of the interaction of the different ligands on the coordination structures is preliminary discussed.
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