Metal rich metallaboranes of group 9 transition metals

Borthakur, Rosmita ; Prakash, Rini ; Nandi, Purbasha ; Ghosh, Sundargopal (2016) Metal rich metallaboranes of group 9 transition metals Journal of Organometallic Chemistry, 825 . pp. 1-7. ISSN 0022-328X

Full text not available from this repository.

Official URL:

Related URL:


We report the synthesis and structural characterization of moderately air stable metal rich metallaboranes of iridium. Treatment of [Cp*IrCl2]2 with BH3·thf at high temperature led to the isolation of a trimetallic [nido-5-(Cp*Ir)3B7H11], 1. Compound 1 is isoelectronic and isostructural with decaborane-14 where three BH units in [B10H14] have been replaced by Cp*Ir fragments. As far as we are aware, 1 is the first example of a iridadecaborane having three metals. In addition to the formation of 1, a change in the reaction conditions enabled us to isolate a 7 sep [(Cp*Ir)3B4H4], 2. The geometry of 2 can be viewed as a condensed polyhedron composed of Ir3B3 octahedron capped by a BH unit. All the compounds have been characterized by IR and 1H, 11B, and 13C NMR spectroscopy in solution, and the solid-state structures were established by X-ray crystallographic analysis. Quantum-chemical calculations by DFT methods for compounds 1 and 2 showed reasonable agreement with the experimentally observed structural parameters. The large HOMO–LUMO gaps are consistent with the high stabilities of the iridium clusters compared to their known Rh and Co analogues.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Boron; Decaborane; Iridaborane; Iridium; Metal Rich
ID Code:108939
Deposited On:31 Jan 2018 12:22
Last Modified:31 Jan 2018 12:22

Repository Staff Only: item control page