含有骨架 B-H 基团的硼烷簇合物。

Thiaborane clusters with an exoskeletal B-H group.

机构信息

Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Pardubice, Studentská 573, CZ-532 10, Czech Republic.

出版信息

Chem Commun (Camb). 2019 Mar 14;55(23):3375-3378. doi: 10.1039/c9cc00952c.

DOI:10.1039/c9cc00952c

PMID:30816893

Abstract

The thiaboranes closo-1-SB11H11 (1a) and 12-I-closo-1-SB11H10 (1b) react with 4-(dimethylamino)pyridine under inert conditions upon the formation of the nido-type thiaboranes 9-B{(4-Me2N)C5NH4}2(H)-7-SB10H11 and 9-B{(4-Me2N)C5NH4}2(H)-5-I-7-SB10H10 containing an exoskeletal B-H group. The same type of B-H moiety is also stabilised by one bipyridine molecule in a chelating fashion. These complexes are unstable in solution, and in air and hydrolyse to monodeboronated ionic compounds having [nido-7-SB10H11]- or [5-I-nido-7-SB10H10]- anions which are also products of the reactions of 1a and 1b with other N-bases such as pyridine, ammonia and DABCO. The extrusion of one boron and one sulphur atom takes place when 1a reacts with 2,6-di-tert-butylpyridine to yield decaborane.

摘要

闭式-1-SB11H11（1a）和 12-I-闭式-1-SB11H10（1b）与 4-（二甲氨基）吡啶在惰性条件下反应，形成 nido-型硫硼烷 9-B{（4-Me2N）C5NH4}2（H）-7-SB10H11 和 9-B{（4-Me2N）C5NH4}2（H）-5-I-7-SB10H10，其中含有一个外骨骼 B-H 基团。同样类型的 B-H 部分也被一个联吡啶分子以螯合的方式稳定。这些配合物在溶液中不稳定，在空气中和水解为单硼化的离子化合物，具有[nido-7-SB10H11]-或[5-I-nido-7-SB10H10]-阴离子，这些阴离子也是 1a 和 1b 与其他 N-碱如吡啶、氨和 DABCO 反应的产物。当 1a 与 2,6-二叔丁基吡啶反应时，会发生一个硼和一个硫原子的挤出，生成十硼烷。