一种阴离子型镓（I）氮杂环卡宾类似物与第16族化合物的氧化反应。

Oxidation reactions of an anionic gallium(I) N-heterocyclic carbene analogue with group 16 compounds.

作者信息

Baker Robert J, Jones Cameron, Kloth Marc

机构信息

School of Chemistry, Main Building, Cardiff University, Cardiff, CF10 3AT, UK.

出版信息

Dalton Trans. 2005 Jun 21(12):2106-10. doi: 10.1039/b505085e. Epub 2005 May 23.

DOI:10.1039/b505085e

PMID:15957050

Abstract

The reactivity of an anionic gallium(I) heterocycle, [K(tmeda)][:Ga([N(Ar)C(H)]2)], Ar = C6H3Pr(i)2-2,6, towards sources of elemental chalcogens and diorgano-dichalcogenides has been investigated and comparisons drawn with the reactivity of the valence isoelectronic N-heterocyclic carbene class of ligand. The reactions of the heterocycle with N2O or (Te)PEt3 yielded the dimeric, dianionic gallium(III) complexes, [K(L)]2[(mu-E)Ga([N(Ar)C(H)]2)]2, E = O, L = tmeda; E = Te, L = THF. Treatment of [K(tmeda)][:Ga([N(Ar)C(H)]2)] with the diphenyl dichalcogenides, PhEEPh, E = Se or Te, gave the one dimensional polymer, [K[(PhSe)2Ga([N(Ar)C(H)]2)]]infinity and the monomeric complex, [K(OEt2)3][(PhTe)2Ga([N(Ar)C(H)]2)], respectively. The X-ray crystal structures of the four complexes are reported.

摘要

研究了阴离子型镓（I）杂环化合物[K（tmeda）][:Ga([N(Ar)C(H)]2)]（Ar = C6H3Pr(i)2-2,6）与元素硫族元素源及二有机二硫族化物的反应活性，并与等电子价的N-杂环卡宾类配体的反应活性进行了比较。该杂环化合物与N2O或（Te）PEt3反应生成二聚体、双阴离子镓（III）配合物[K（L）]2[(μ-E)Ga([N(Ar)C(H)]2)]2，其中E = O，L = tmeda；E = Te，L = THF。用二苯基二硫族化物PhEEPh（E = Se或Te）处理[K（tmeda）][:Ga([N(Ar)C(H)]2)]，分别得到一维聚合物[K[(PhSe)2Ga([N(Ar)C(H)]2)]]∞和单体配合物[K（OEt2）3][(PhTe)2Ga([N(Ar)C(H)]2)]。报道了这四种配合物的X射线晶体结构。