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71.
Jean-Claude Daran Nicolas Gimeno Maryse Gouygou Jrme Volkman 《Acta Crystallographica. Section C, Structural Chemistry》2019,75(5):523-528
The self‐assembly of ditopic bis(1H‐imidazol‐1‐yl)benzene ligands ( L H) and the complex (2,2′‐bipyridyl‐κ2N,N′)bis(nitrato‐κO)palladium(II) affords the supramolecular coordination complex tris[μ‐bis(1H‐imidazol‐1‐yl)benzene‐κ2N3:N3′]‐triangulo‐tris[(2,2′‐bipyridyl‐κ2N,N′)palladium(II)] hexakis(hexafluoridophosphate) acetonitrile heptasolvate, [Pd3(C10H8N2)3(C12H10N4)3](PF6)6·7CH3CN, 2 . The structure of 2 was characterized in acetonitrile‐d3 by 1H/13C NMR spectroscopy and a DOSY experiment. The trimeric nature of supramolecular coordination complex 2 in solution was ascertained by cold spray ionization mass spectrometry (CSI–MS) and confirmed in the solid state by X‐ray structure analysis. The asymmetric unit of 2 comprises the trimetallic Pd complex, six PF6? counter‐ions and seven acetonitrile solvent molecules. Moreover, there is one cavity within the unit cell which could contain diethyl ether solvent molecules, as suggested by the crystallization process. The packing is stabilized by weak inter‐ and intramolecular C—H…N and C—H…F interactions. Interestingly, the crystal structure displays two distinct conformations for the L H ligand (i.e. syn and anti), with an all‐syn‐[Pd] coordination mode. This result is in contrast to the solution behaviour, where multiple structures with syn/anti‐ L H and syn/anti‐[Pd] are a priori possible and expected to be in rapid equilibrium. 相似文献
72.
StructuralFeaturesandInterrelationofTwoNewTrinuclearMo-SClusterCompoundsLuShao-Fang;WuQiang-Jin;ChenHong-Bing;YuRong-Min;Huan... 相似文献
73.
以反式-3-[N,N-二(2-吡啶甲基)氨甲基]-2-羟基-5-甲基苯甲醛肟(H2L)为配体,合成了一个新颖的线性三核铜(Ⅱ)配合物[Cu3L2(py)](ClO4)2·2THF (1)(py=吡啶,THF=四氢呋喃),对其进行了红外、紫外、热重和单晶结构表征。配合物1属于单斜晶系,空间群为C2/c,a=2.969 0(7) nm,b=1.302 8(3) nm,c=2.057 4(9) nm,β=132.435(2)°,V=5.873(3) nm3,Z=4,R1=0.047 9。单晶结构表明,这是一个混合桥(-N-O-和μ2-O-)连的线性五配位三核铜(Ⅱ)配合物:每个铜均由3个氮原子和2个氧原子配位,中间的铜为扭曲的三角双锥构型,而两侧的铜为扭曲的四方锥构型。变温磁化率显示1的铜离子间存在中等的反铁磁性(J=-33.3(5) cm-1)。 相似文献
74.
75.
Can-Zhong Lu Jun-Ning Zhuang Li-Sheng Chi Yin-Gui Wang Jin-Shun Huang Hong-Hui Zhuang Qian-Er Zhang 《Journal of chemical crystallography》1999,29(9):1019-1022
The title compound, [Mo3(3-S)(-S2)3(S2CNEt2)3]I·S8, was obtained by solid state reaction of (NH4)2MoS4, Et2NCS2Na, and Et4NI at low heating temperature and crystallizes in space group P
with a = 13.572(3), b = 13.813(4), c = 13.239(3) Å, = 92.63(3), = 100.15(3), = 117.89(2)°, V = 2136(2) Å3, and D
calc. = 2.08 g/cm3 for Z = 2. The structure reveals that it consists of a trinuclear Mo cluster molecule, [Mo3S7(S2CNEt2)3]I, and one S8, which are connected to form a quasi-layer structure by the interaction between S8 and the S atoms of the cluster molecule. 相似文献
76.
Dana M. Hatch William F. Wacholtz Joel T. Mague 《Journal of chemical crystallography》2005,35(4):327-338
A luminescent trinuclear zinc(II) complex, tris(-2,3-toluenedithiolato)-1:22S1;1:22S1, 2:32S2;3S2, 1:32S3;3S3-bis(2,2-bypyridine)-12N,N,22N,N-trizinc, containing 3,4-dimercaptotoluene (tdt) and 2,2-bipyridine (bpy) has been synthesized and found to have the trinuclear formulation Zn3(tdt)3(bpy)2 (I). The complex crystallizes in the monoclinic space group P21/n with a = 11.7247(12), b = 20.134(2), c = 17.7376(18) Å and = 103.743(2). The complex has two heteroleptic zinc(II) centers exhibiting similar distorted trigonal bipyramidal geometries with the third homoleptic zinc(II) center displaying a flattened tetrahedral geometry. Present in the solid state are both intra- and intermolecular – interactions. The complex is emissive at 77 K in the solid state with an emission maximum at 574± 2 nm with a luminescence lifetime of 7.4± 0.4 ns. The unstructured emission is assigned as a metal-mediated ligand-to-ligand –* charge transfer transition. 相似文献
77.
合成了四种三核钼钨簇合物([Mo3L]2+, [Mo2WL]2+, [MoW2L]2+, [W3L]2+, 其中L=[(μ3-O)2(μ-CH3COO)6(H2O)3])。并研究了四种簇合物在铂电极上的电化学特性,结果表明:在0.01 mol/L簇合物的水溶液中,[Mo3L]2+, [Mo2WL]2+出现两个氧化峰,两个还原峰。[W3L]2+, [W2MoL]2+则出现三个氧化峰和两个还原峰,四种簇合物的电化学性质不同,主要是由于钼钨的外层电子排布不同造成的。 相似文献
78.
报导了通式为[Fe_2M(μ_3-O)(μ-O_2CR)_6·L_3]·XH_2O[其中M=Mn(Ⅱ),Co(Ⅱ),Ni(Ⅱ),Fe(Ⅲ)(这时骨架为阳离子);R=CH_3,C_2H_5;L=H_2O,py]的3类11个配合物的振动光谱。在谱带经验归属及简正坐标分析计算的基础上,分别详细讨论了配体及骨架的振动光谱与结构的某些相关规律。这些规律具有一定的普遍性,因而有其理论和实际应用价值。 相似文献
79.
The reaction of [(η5-C5Me5)2Mo2(μ3-S)4(CuCl)2] 1 with Na2S in MeCN produced a trinuclear cluster [(η5-C5Me5)2Mo2(μ3-S)( μ3-S)3(CuCl)] 2. 2 crystallizes in the monoclinic system, space group P21/c with a=15.563(3), b=8.9547(18), c=17.846(4) (A), β=101.29(3)°, V=2438.9(9) (A)3, Z=4, Dc=1.878 g/cm3, T=193(2) K, C20H30ClCuMo2S4, Mr=689.60, F(000)=1376, μ(MoKα)=2.335 mm–1, S=1.050, R=0.0305 and wR=0.0688 for 4033 observed reflections with Ⅰ > 2σ(Ⅰ). In the structure of 2, one [(η5-C5Me5)2Mo2(μ-S)2S2] moiety and one CuCl unit are assembled into an incomplete cubane-like [Mo2S4Cu] core framework, in which the Cu center adopts a distorted tetrahedral geometry coordinated by oneμ3-S atom, twoμ-S atoms and one terminal chloride. The two Mo…Cu contacts are 2.7519(7) and 2.7689(8) (A), respectively. 相似文献
80.
ElectrochemicalStudyofTrinuclearMetalComplexes[M_3O_2(O_2CCH_3)_6(H_2O)_3]~(2+)(M_3=Mo_3,MoW_2,W_3)LiuHuang;XuLi;HuangJin-Shun;YanD... 相似文献