The isolation and characterisation of the 1- and 2-isomers of nido-[(η⁶-C₆Me₆)RuB₉H₁₃]—but is the 1-isomer nido or arachno?

Abstract

Reaction between [(η6-C6Me6)RuCl2]2 and K[B6H11] yields a rare example of a 2-metalla nido-decaborane derivative, [2-(η6-C6Me6)-nido-2RuB9H 13], together with an unprecedented 1-ruthena isomer having the same empirical formula but a more open arachno-type structure.