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《结构化学》1991,(3)
<正> [(C6H5)4P]Cu(S2C6H4)2(Ⅰ),Mr = 683. 39,monoclinic,space group C2/c,a=16. 099 (4),b= 11. 913(3) ,c = 16: 715(9) A ,β=97. 13(4)°, v = 3180. 7 A3,z=4.MoKa radiation,λ= 0. 71069A ,Dc= 1. 427g/cm3,μ= 10. 1cm-1,F(000) = 1400,R=0. 061 and Rw = 0. 068 for 2189 reflections with Ⅰ>3σ(Ⅰ). [(C6H5)4P]Cu (S2C7H6)2(Ⅰ),Mr = 711. 45,monoclinic,space group C2/c,a=16. 501(6),b = 37. 461 (15),c=16. 684(4)A,β=96. 70(4)°, v= 10248. 8(46) A3,z= 12. MoKa radiation, λ= 0. 71069A,Dc=1.383g/cm3,μ=9. 45cm-1,F(000).= 4416,R= 0. 074 and Rw= 0. 078 for 2085 reflections with I>2σ(I)(1). The copper atom in the complexes is surrounded by four sulfur atoms from two dithiolato ligands in an approximate, square-plane. The average Cu-S distances of the copmplexes(Ⅰ) and (Ⅱ) are 2. 179 and 2. 178 A, respectively. 相似文献
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lINTRODUCTIONThefirstheteronucleartransitionmetalclusterHFeCo,(Co),,wassynthesizedbyChinit13in196Obyusingthepyrolysisofmeta1carbonyldimers.Analysisofcar-bonylIRspectraandX-raypowderpatternsindicatedthatthiscompoundisisostruc-tural.withCo'(CO),,andthushasC,.symmetry(".MaysE'-'ihascarriedoutIRspectraandmassspectraonthiscompoundandkineticisotopestudiesontheprotona-tionoftheanion[FeCo,(CO),,j-,andproposedonthebasisofthisevidencethatthehydrogenatommightbelocatedinthecenterofthecluster.… 相似文献
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过渡金属—C60配合物的合成及结构的研究是C60化学非常重要的一个组成部分,这对于发展C60化学及新型功能材料的开发具有很大意义.关于这方面的研究工作近年已有一些报道〔1~3〕.Hawkins等关于(tBuC6H5N)2OsO4(C60)的合成及单... 相似文献
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LI Xue a YAO Hai Jun b HU Chun Hua a DOU Jian Min a c Sun Jie d JIN Ruo Shui b ZHENG Pei Ju a ② a 《结构化学》1999,(5)
1 INTRODUCTIONThefirstpolyhedralruthenaboraneisstructurallytypifiedbythecompound〔(PPh3)2RuB10H8(OEt)2〕in1984〔1〕,whichisobtainedin40%yieldbythereactionoftheclosodecaboraneanionB10H102-with〔RuCl2(PPh3)3〕inethanol/chloroformsolution.Researchershavesy… 相似文献
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《结构化学》1989,(3)
<正> (Ph4P)2[Ni3(u-SC3H6S)4].2CH3CN was obtained from the reaction of NiCl2.6H2O,Na2(1,2-pdt)(pdtH2=CH3CH(SH)CH2SH) and Ph4PBr.Mr=1361. 80, P21/c,a=10.802(2),b=30.111 (7),c=9. 907(3) A ,B=93. 60(3) ;V= 3216. 0 A3;Z=2,Dc=1. 41g/cm3. The three Ni atoms of the anion are linearly arranged and bridged by four sulfur atoms from the four 1 ,2-propyldithiolato ligands. 相似文献
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《结构化学》1985,(2)
<正> PRELIMINARY INFORMATION. The title compound, is one of the products synthesized by a reaction of bis(triphenylphosphine)-platinum, carbon monoxide and chlorine gas in sodium hydrate solution at room temperature. An X-ray structural analysis has been undertaken to clarify unambiguously the arrangement of ligands around the triangle platinum cluster core. This has been 相似文献
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丁二烯的NdCl_3·2Phen-HAl(i-Bu)_2催化定向聚合 总被引:1,自引:2,他引:1
本文报导了一种新的二元氯化稀土定向聚合催化剂,系由氯化钕邻菲罗啉络合物(NdCl_3·2Phen)与氢化二异丁基铝(HAl(i-Eu)_2)所组成。该体系可在较宽范围内改变聚丁二烯的分子量。本文研究了该体系作用下丁二烯聚合的一般规律,着重考察了影响产物分子量的主要因素,表明HAl(i-Bu)_2是聚合过程中的主要链转移剂,HAl(i-Bu)_2/单体比是控制产物分子量的关键变量,文内对邻菲罗啉络合分子在控制产物分子量过程中可能起的作用进行了讨论。 相似文献
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《结构化学》1984,(2)
<正> M=1013.98, hexagonal, P63/m, a=b=15.492(2), c=8.530(4)A, γ=120°, V=1773A3, Z=2, Dc=1.899°g.cm-3. Final R=0.042 for 611 reflections.This is a Bl(bicapped) type trinuclear molybdenum cluster with two S capping atoms located on the 63 axis and exhibits full D3h symmetry. The Mo-Mo distances are 2.606(1)A, with a bond order of 11/3. It is paramagnetic. 相似文献
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《结构化学》1986,(2)
<正> (Ph2Ppy)2(μ-Cl)2Cu2Cl2 (C34H28Cl4Cu2N2P2): Mr=795.5, triclinic, Pl, a=13.891(2), b= 13.196(3), c= 20.158(4) A, d= 90.28(1)°, β=110.05(2)°, r= 90.13(1)°, Z=4, V= 3471.04A3, Dx=1.53 gcm-3, R=0.066, Rw= 0.076 for 5486 observed unique reflections. The complex was prepared by the reaction of (Ph2Ppy)2NiCl2 with CuC≡CPh in CH2Cl2 solution. 相似文献
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《结构化学》1984,(1)
<正> Mr=1178.9, monoclinic, P21/n, a=16.570(2), b=12.370(1), c=20.007(2) A,β=99.97(1)°, V=4039.0A3, Z=4, Dx=1.938 Mgm-3, λ(MoKα)=0.7107A, μ(MoKα)=23.96 F(000)=2296, room temperature. Final R value=0.047 for 4387 unique observed reflections. It consists of neutral mono-oxo-capped trinuclear molybdenum cluster molecules with an average Mo-Mo bond length of 2.626(4)A and an average Mo-0 bond length of 2.036(2)8. 相似文献
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CRYSTAL STRUCTURE OF TRIS(2-THENOYLTRIFLUOROACETONATO)BIS(TRIPHENYLPHOSPHINE OXIDE)EUROPIUM(Ⅲ), Eu(TTA)_3.(Ph_3PO)_2 总被引:1,自引:0,他引:1
<正> C60H42O8F9S3P2Eu,Mr=1372.07 triclinic, space group Pl,a = 11.191(1), b = 12.121(2), c = 23.529(3) A,α=80.08(1),β=76.51(1),γ=70.46(1)°,V=2909.3(6)A3, Dm(flotation in CCl4/BrCH2CH2Br) = 1.566, Dx(Z=2) = 1.562 g cm-3,λ(MoKα) =0.71073 A,μ=13.16 cm-1, F(OOO)=1376, T =295 °K, final RF=0.033 for 9104 observed reflections with |Fσ|>3σ(|Fσ|).The compound is isostructural with the known neodymium(Ⅲ) complex. The metal atom in the monomeric molecule is coordinated dodecahedrally by the eight 0 atoms of the surrounding ligands with Eu-0 bond distances in the range 2.361(2)-2.457(3) A. 相似文献
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A series of new complexes of formula Ln(acac)_s(Ph_3PO)_3 (where Ln~(3+)=Nd~(3+), Sm~(3+), Eu~(3+), Tb~(3+), Ho~(3+)) have been prepared and characterized. The coordination of two ligands with lanthanide ions are studied by IR spectra, ~1H, ~(13)C, ~(31)P-NMR and metal-ligand charge tranafer tranaition is also discussed via electronic adaorption and luminescence spectroscopy. 相似文献
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用P(SR)Cl_2和P(SR′)_3作n-酸配体,分别与Fe_3(CO)_9(μ_3-S)_2进行取代反应,得到6种新的一取代产物Fe_3(CO)_8(μ_3-S)_2L和3种新的二取代产物Fe_3(CO)_7(μ_3-S)_2L_2,并对它们进行了IR、~1H NMR和MS表征,测定了其中一种取代物Fe_3(CO)_8(μ_3-S)_2[P(SC_6H_5)Cl_2]的分子和晶体结构。 相似文献
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应用一个简单新方法,在锌粉存在和常温常压下,(Ph_2PPy)_2NiCl_2与CO作用得到新配合物(Ph_2PPy)_2Ni(CO)_2。对后者经X衍射测定了晶体及分子结构,该晶体属正交晶系P_(cab.)晶胞参数为:a=12。044(3),b=21。322(5),c=24.925(5),Z=8.R=0.051和R_w=0.055,该分子中的镍原子配位为四面体构型。 相似文献
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Hong Mao-Chun Huang Zhi-Ying Cao Rong Jiang Fei-Long Liu Han-Qin State Kev Laboratory of Structural Chemistry and Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 《结构化学》1993,(5)
<正> [Au13Ag12(μ-Br)1(μ3-Br)2 (Ph3P)10Br2] Br, monoclinic. space group C2/m, a = 36. 496(17). b=16. 878(7), c-=19. 772(9) A , β=99. 87(5)°, V=11998. 9 A3.Z=2. The final R(Rw) is 0. 097(0. 109) for 3779 reflections with I>3σ(I). The structure can he considered as two icosahedral cluster units (AurAg6) sharing one vertex and linked hy six bromine atoms. The Au - Au, Au - Ag. and Ag-Ag distances fall in the ranges of 2. 69-2. 96. 2. 84-3. 02. and 2. 92-3. 26 A, respectively. 相似文献
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《结构化学》1984,(2)
<正> M=1140.85, monoclinic, P21/c. a=12.748(2), b=14.320(2), c=23.118 (3)A,β=101.07(1)°, V=4141(2)A3, Z=4, Dc=1.830 g.cm-3. Final R=0.039 for 4160 reflections.The title compound is a rather irregular trinuclear molybdenum cluster having only two M-M bonds with two shorter Mo-Mo distances of 2.808(1), 2.839(1), and one longer Mo-Mo distance of 3.337(1)8. The existence of two Mo-Mo bonds is coincident with the electron counting for {Mo3} cluster core, and may be regarded as a result of the oxidation of a compound Mo3(μ3-S)(μ-S)2 (μ-L)[S2P(OEt)2]4(L') (L'=neutral ligands)1 characterized by us previously. 相似文献