Stibasilene Sb═Si and Its Lighter Homologues: A Comparative Study
摘要:
The multiply bonded derivatives of the heavier main group elements are among the most challenging targets for synthetic pursuits. Those of them featuring a double bond between the silicon and group 15 element are represented mostly by the silaimines -N=Si< and phosphasilenes -P=Si< with a very few examples of arsasilenes -As=Si<. In this contribution, we report on the synthesis and structural elucidation of the first stable stibasilene and novel phosphasilene and arsasilene derivatives, featuring an identical substitution pattern. A systematic comparison within the series phosphasilene-arsasilene-stibasilene is made on the basis of their experimental and computational studies.
synthesized in excellent yields from the difluoroarsine ArAsF2 by reaction with ArAs(Li)SiMe3 (for 1) and with ArP(H)Li followed by t-BuLi (for 6). Compound 1, previously prepared by other routes, as well as the new compound 6 were characterized by single-crystal X-ray diffraction (d(AsAs) 2.2634(3) Å, d(PAs) 2.141(5) Å).
Arsagermene, a compound with an –AsGe double bond
作者:Vladimir Ya. Lee、Manami Kawai、Olga A. Gapurenko、Vladimir I. Minkin、Heinz Gornitzka、Akira Sekiguchi
DOI:10.1039/c8cc05630g
日期:——
The first compound featuring an AsGe doublebond, arsagermene Mes*AsGe(SiMetBu2)2, was synthesized, isolated and fully characterized. Crystallographic studies revealed that arsagermene has a planar GeAs bond of 2.2731(8) Å, which is notably shorter than the standard Ge–As single bond. The doublebond character of arsagermene was further supported by computational data.
合成,分离并充分表征了第一个具有As Ge双键的化合物砷砂Mes * As Ge(SiMe t Bu 2)2。晶体学研究表明,arsagermene具有2.2731(8)Å的平面Ge As键,比标准的Ge-As单键短得多。计算数据进一步证实了阿沙美芬的双键特性。
Petrar, Petronela Maria; Nemes, Gabriela; Silaghi-Dumitrescu, Luminita, Revue Roumaine de Chimie, 2007, vol. 52, # 1-2, p. 45 - 49
作者:Petrar, Petronela Maria、Nemes, Gabriela、Silaghi-Dumitrescu, Luminita、Silaghi-Dumitrescu, Ioan、Escudié, Jean、Gornitzka, Heinz、Ranaivonjatovo, Henri
DOI:——
日期:——
The First Diarsaallene ArAsCAsAr (Ar = 2,4,6-Tri-<i>tert</i>-butylphenyl)