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Allan J. Canty Jim PatelMichel Pfeffer Brian W. SkeltonAllan H. White 《Inorganica chimica acta》2002,327(1):20-25
Neutral palladium(IV) complexes containing the bis(pyrazol-1-yl)borate ligand, PdMe3{(pz)2BH2}(L) [L=py-d5 (4), PMe2Ph (6)], are generated in solution by oxidative addition of iodomethane to [PdMe2{(pz)2BH2}]− at −70 °C followed by addition of L; the Pd(IV) complexes reductively eliminate ethane above 0 °C. Stable Pt(IV) analogues of 4 and 6 have been isolated, and comparison of NMR spectra for Pd(IV) and Pt(IV) species support structural assignments for the unstable Pd(IV) complexes. The complex PtMe3{(pz)2BH2}(py) (1a) has been characterised by X-ray diffraction, together with Pt(mq)Me2{(pz)2BH2} (2) (mq=8-methylquinolinyl); both complexes show a fac-PtC3 configuration for Pt(IV), and for 2 the PtN distances are ∼0.03 Å shorter than in the isostructural Pd(IV) complex. 相似文献
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Ambarish Ray William S. Sheldrick Swastik Mondal Song Gao 《Inorganica chimica acta》2005,358(12):3471-3477
Two novel isostructural (Π = 0.0045, Iv = 93.292) one-dimensional mono-halo-bridged octahedral copper (II) polymeric complexes [Cu(L)Cl]n(ClO4)n (1) and [Cu(L)Br]n(ClO4)n (2) (L = 1,9-diamino-5-methyl-5-nitro-3,7-diazanonane) were prepared and characterized by CHN, IR, EPR and magnetic moment studies under a tetra coordinating (diaza-diamine type) ligand environment. The X-ray structure analysis indicates that in both 1 and 2, independent consecutive [Cu(L)X]+ (X = Cl or Br) cations with crystallographic Cs symmetry propagate through the a glide plane of the orthorhombic space group Pnma to give the polymeric chain structure along the a axis. In 1, the Cu-Cl bond length is 2.740 which under bridging condition elongates to 3.024 and the bridging angle, Cu-Cl-Cu, is 164.9 while parameters for 2 are 2.961(2), 3.074(2) and 157.4(5), respectively. Each monomeric unit in both the complexes is under extensive intra and inter-molecular hydrogen bonding, leading to three dimensional structures. 相似文献
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Yongcai Qiu Jianqiang Liu Nicolas Kerbellec Olivier Guillou 《Inorganica chimica acta》2007,360(10):3265-3271
Four crystalline lanthanide(III) three-dimensional (3D) coordination polymers {[La(BDOA)1.5(H2O)] · H2O}n (1), {[Nd(BDOA)1.5(H2O)] · H2O}n (2), [Tm(BDOA)1.5(H2O)]n (3), [Yb(BDOA)1.5(H2O)]n (4) were obtained under hydrothermal conditions and characterized by elemental analysis, IR, as well as single-crystal X-ray diffraction. Compounds 1 and 2 crystallize in the monoclinic system, space group P21/c, they are isostructural and exhibit the same 321.457.513 topological network constructed from different coordination modes of two BDOA ligands, whereas isostructural 3 and 4 crystallizes in the triclinic system, space group , it holds 39.420.57 topological architecture based on another two different coordination modes BDOA ligands. Moreover, a computational method is applied to evaluate the potential porosity of complex 1. 相似文献
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