Quenched gas-phase reactions of tetraborane(10), B4H10, with substituted alkynes: new nido-dicarbapentaboranes and arachno-monocarbapentaboranes

Fox, Mark A.; Greatrex, Robert; Nikrahi, Alireza

Abstract

New alkyl derivatives of the nido-dicarbapentaborane, 1,2-C2B3H7, and arachno-carbapentaborane, 1-CB4H10, have been identified as the main volatile carbaborane products in quenched gas-phase reactions of tetraborane(10), B4H10, with alkyl-substituted ethynes RC[triple bond, length as m-dash]CR′ (R = Me, Et, nPr or tBu, R′ = H; R = Me or Et, R′ = Me). The gaseous mixtures were heated at 70 °C, and monitored by gas-phase mass spectrometry. Each reaction was quenched when the ethyne was used up. The quenched gas-phase reaction of B4H10 and Me3SiC[triple bond, length as m-dash]CH gave a single volatile carbaborane product, 1-Me3Si-1,2-C2B3H6.

Citation

Fox, M. A., Greatrex, R., & Nikrahi, A. (2008). Quenched gas-phase reactions of tetraborane(10), B4H10, with substituted alkynes: new nido-dicarbapentaboranes and arachno-monocarbapentaboranes. Dalton Transactions, 2008(5), 676-684. https://doi.org/10.1039/b715105e

• Journal Article Type: Article
• Acceptance Date: Oct 30, 2007
• Publication Date: Jan 1, 2008
• Deposit Date: Dec 14, 2011
• Publicly Available Date: Apr 30, 2015
• Journal: Dalton Transactions
• Print ISSN: 1477-9226
• Electronic ISSN: 1477-9234
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Volume: 2008
• Issue: 5
• Pages: 676-684
• DOI: https://doi.org/10.1039/b715105e
• Public URL: https://durham-repository.worktribe.com/output/1532942