Hypoelectronic isomeric diiridaboranes [(Cp*Ir)2B6H6]: the "Rule-Breakers"(Cp* = η5-C5Me5). Issue 15 (26th January 2016)

• Record Type: Journal Article
• Authors: Borthakur, Rosmita; Mondal, Bijan; Nandi, Purbasha; Ghosh, Sundargopal
• Is Part Of: Chemical communications. Volume 52:Issue 15(2016)
• Page Start: 3199
• Page End: 3202
• Publication Date: 2016-01-26
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c5cc09606e
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Isolation of two 8-vertex topological diiridaborane isomers: a dodecahedron and a bicapped trigonal prism. Abstract : In an effort to synthesize supraicosahedral iridaboranes, pyrolysis of [Cp*IrCl2 ]2 with excess [BH3 ·THF ] was carried out, and this synthesis afforded the isomeric iridaborane [(Cp*Ir)2 B6 H6 ] clusters 1 and 2. The geometry of 1 was determined to be dodecahedral, i.e., similar to that of [B8 H8 ] 2−, whereas 2 was found to exhibit a cluster shape that can be derived from a nine-vertex tricapped trigonal prism by removing one of the capped vertices. The calculation of a large HOMO–LUMO gap further rationalized the isocloso structures for these isomers.