Cleavage of the tetrameric palladium(II) complex [Pd4(PPrn3)4(NO2)4(ONO)4]with nucleophiles. X-ray crystal structures of the products trans-[Pd(PPrn3)(NO2)2Cl][As(C6H5)4] and [Pd2(PPrn3)2Cl2(NO2)2]
The synthesis and crystal structures of the tetraphenylarsonium salts of [V<sub>2</sub>O<sub>3</sub>(NO<sub>3</sub>)<sub>2</sub>X<sub>4</sub>]<sup>2–</sup>, X = Cl or NO<sub>3</sub>
作者:Stephen Arrowsmith、Michael F. A. Dove、Martin N. Gibbons、Norman Logan、Andrei Batsanov
DOI:10.1039/c39950001733
日期:——
The title compounds, [Ph4As]2[V2O3(NO3)6]1, and [Ph4As]2[V2O3Cl4(NO3)2]2, crystallised from solution in the reaction of tetraphenylarsonium nitrate with VO(NO3)3 and VOCl3, respectively, and the crystal structures of the dianions show that they are structurally related; the octahedral coordination of all vanadium atoms is achieved by two oxygens, a bidentate nitrate and two other monodentate groups, and an unusual feature of compound 2 is the presence of both chlorine and nitrate as ligands on vanadium(V).
作者:Jean-Claude G. Bünzli、Bernard Klein、Gervais Chapuis、Kurt J. Schenk
DOI:10.1016/0022-1902(80)80291-0
日期:1980.1
The structure of the title compound was solved from single crystal X-ray diffractometer data by Patterson and Fourier methods, and refined by least-squares to conventional RF = 0.046 for 2504 independent observed reflections. The crystals are monoclinic with , β = 103.60(3)°, and Z = 4, space group (No. 15). The Eu(III) ion lies on a twofold axis; it is 10-coordinated and bound to five bidentate nitrato
标题化合物的结构通过Patterson和Fourier方法由单晶X射线衍射仪数据解析,并针对2504个独立观察到的反射,通过最小二乘法精炼为常规R F = 0.046。晶体是单斜晶体,β= 103.60(3)°,Z = 4,空间群(第15号)。Eu(III)离子位于一个双重轴上。它是10位协调的,并绑定到五个双齿硝酸根基团。EuO的平均距离为2.48(4)Å,OEuO的平均角度为51.4(5)°。配位多面体可以用理想对称的扭曲的二阶方形反棱镜来描述。
The synthesis, properties and structures of the tetraphenyl-arsonium salts of [V2O3(NO3)2X4]2−, X Cl or NO3
The complexes [Ph4As](2)[V2O3(NO3)(6)], 1 and [Ph4As](2)[V2O3Cl4(NO3)(2)], 2, crystallise from solution in the reaction of tetraphenylarsonium nitrate with VO(NO3)(3) and VOCl3, respectively. The compounds were characterised by their IR and Raman spectra and single crystal X-ray analysis. Compound 1 crystallises in the triclinic space group P (1) over bar, a = 9.580(1), b = 10.782(2), c = 13.631(2) Angstrom, Z = 1 and R = 0.059, whilst 2 crystallises in the monoclinic space group P2(1)/c, a = 10.1.76(1), b = 17.691(2), c = 13.955(2), Z = 2 and R = 0.034. The crystal structures show that the dianions are related, the vanadium atoms in both species possess distorted octahedral symmetry, this being achieved by one terminal and one bridging oxygen atom, one bidentate nitrate group and four other monodentate ligands. An unusual feature of 1 is the presence of both monodentate and bidentate modes of nitrate coordination whilst 2 is the first example of a mixed halonitrato species of vanadium(V) to be isolated. (C) 1998 Elsevier Science Ltd. All rights reserved.