The preparation, characterization in solution of the 7π radical 1,2,4-triseleno-3,5-diazolylium and the 6π(1,2,4-triseleno-3,5-diazolium)<sup>2+</sup>cations, and the X-ray crystal structures of (SeNSeNSe)<sub>2</sub>(AsF<sub>6</sub>)<sub>2</sub>and SeNSeNSe(AsF<sub>6</sub>)<sub>2</sub>containing the first stable binary selenium–nitrogen species
作者:Edward G. Awere、Jack Passmore、Peter S. White、Thomas Klapötke
DOI:10.1039/c39890001415
日期:——
([graphic omitted])n(AsF6)2(n= 1,2) containing the first stable binary selenium–nitrogen species, have been prepared by the reaction of stoicheiometric quantities of Se4(AsF6)2(n= 2) or AsF5(n= 1 and 2) with Se4N4 in liquid SO2, and their structures determined by X-ray crystallography; in solution ([graphic omitted]e)2(AsF6)2 gives the indefinitely stable 7π radical [graphic omitted]e+˙(e.s.r. spectrum
([图形省略])ñ(ASF 6)2(Ñ包含第一稳定二进制硒-氮物种= 1,2),制备由硒化学计量量的反应4(ASF 6)2(Ñ = 2 )或AsF 5(n = 1和2)与液态SO 2中的Se 4 N 4,其结构通过X射线晶体学测定;在溶液中([e省略的图形] e)2(AsF 6)2给出无限稳定的7π自由基[[e省略的图形] e +˙(冷冻粉末的esr光谱)和[ π省略图形](AsF 6)2为6π[e省略图形] e 2+(拉曼光谱和14 N nmr光谱)。
Preparation and characterisation of thermally stable (SeNSeNSe)<sub>n</sub>(AsF<sub>6</sub>)<sub>2</sub>containing the ‘electron-rich aromatic’ 6π(SeNSeNSe)<sup>2+</sup>(n= 1) and 7π SeNSeNSe˙<sup>+</sup>(n= 2)
作者:Edward G. Awere、Jack Passmore、Peter S. White
DOI:10.1039/dt9930000299
日期:——
with retention of the [graphicomitted]e2+ ring structure in solution. The ESR spectrum of [graphicomitted]e˙+ in SO2 solution at r.t. (g= 2.043, broad) and the spectrum of powdered [graphicomitted]e˙+ in frozen SO2 at –160 °C were similar to but not identical with those of [graphicomitted]e˙+, [graphicomitted]˙+ and [graphicomitted]˙+ indicative of a planar 7π ring system.
The preparation and X-ray structure of Pt(Se3N)Cl(PMe2Ph)
作者:Paul F. Kelly、Alexandra M. Z. Slawin、David J. Williams、J. Derek Woollins
DOI:10.1039/c39890000408
日期:——
Reaction of Se4N4 with [PtCl2(PMe2Ph)]2, in refluxing CHCl3, results in Pt(Se3N)Cl(PMe2Ph), (1), the first example of a metal selenium–nitrogen complex, which contains the bidentate, selenium-bound Se3N– ligand; from X-ray crystallography (1) is square planar with a bidentate Se3N– ligand co-ordinated through two selenium atoms.
Se 4 N 4与[PtCl 2(PMe 2 Ph)] 2在回流的CHCl 3中反应,生成Pt(Se 3 N)Cl(PMe 2 Ph),(1),金属硒的第一个例子–氮配合物,包含二齿硒键结合的Se 3 N –配体;来自X射线晶体学的结果(1)是正方形平面,具有通过两个硒原子配位的二齿Se 3 N –配体。
Reaction of Se4N4 with Pt(PPh3)3: The preparation and X-ray structure of [Pt(Se2N2)(PPh3)]2·CH2Cl2
作者:Paul F. Kelly、Alexandra M.Z. Slawin、David J. Williams、J.Derek Woollins
DOI:10.1016/s0277-5387(00)86575-4
日期:1990.1
Abstract Reaction of Pt(PPh 3 ) 3 with Se 4 N 4 in CH 2 Cl 2 leads to a mixture of Pt(Se 2 N 2 )(PPh 3 ) 2 ( 1 ) and an intermediate species, which decomposes via loss of PPh 3 to give [Pt(Se 2 N 2 )(PPh 3 )] 2 ·CH 2 Cl 2 ( 2 ). X-ray crystallography reveals 2 to be dimeric, with [Pt(Se 2 N 2 )(PPh 3 )] units bridged by PtN bonds in a Pt2 N 2 ring. The central [PtSe 2 N 2 ] 2 core is planar and the
摘要Pt(PPh 3)3与Se 4 N 4在CH 2 Cl 2中的反应导致Pt(Se 2 N 2)(PPh 3)2(1)和一种中间物种的混合物,该混合物通过PPh的损失而分解。 3给出[Pt(Se 2 N 2)(PPh 3)] 2·CH 2 Cl 2(2)。X射线晶体学显示2为二聚体,[Pt(Se 2 N 2)(PPh 3)]单元由Pt 2 N 2环中的PtN键桥接。中心的[PtSe 2 N 2] 2中心是平坦的,单个PtSe 2 N 2环的几何形状与仅报道的其他示例[Pt(Se 2 N 2 H)(PMe 2 Ph)2]相当。 Cl。