Recent developments in the study of carboranes

Abstract

A variety of (ligand)-Metal(CO)5complexes have been prepared using germa-. phospha- and arsacarboranes as sigma-donor ligands. New types of bonding are observed in these complexes. New types of one-carbon carborane derivatives have been obtained by reduction of 1.12-B10H10CHAs and by reaction of i-B18H22with alkyl isocyanides. The 70.6 MHz 11B n.m.r. spectra of 1,2-B9C2H12, (l.2-B9C2H11)2Co-and 1,7-B10H10C2H2have been elucidated by labelling studies. Correlations of the llB and 13C n.m.r. chemical shift data of certain carboranes have been observed. © 1972, Walter de Gruyter. All rights reserved.