Bould, Jonathan, Hursthouse, Michael B., Coles, Simon J., Thornton-Pett, Mark and Kennedy, John D. (2005) Metallaborane reaction chemistry. Part 10. Phenylacetylene incorporation via [4,4-(PMe2Ph)2-arachno-4-PtCB8H12] in a ‘converse’ metalladicarbaborane synthesis of [7,7-(PMe2Ph)2-isonido-7,6,8-PtC2B6H7-6-Ph]. Inorganic Chemistry Communications, 8 (2), 143-146. (doi:10.1016/j.inoche.2004.08.024).
Abstract
Reaction between PhC?CH and [4,4-(PMe2Ph)2-arachno-4-PtB8H12] (1) gives carbons-apart [7,7-(PMe2Ph)2-isonido-7,6,8-PtC2B6H7-6-Ph] (2), in a ‘converse’ synthesis of a metallacarbaborane, viz. in a synthesis by addition of carbon centres into a pre-formed metallaborane, rather than by metal-centre addition to a pre-formed carbaborane. The long B(3)–B(4) diagonal distance of 2.541(8) Å in the quadrilateral open face is one of the longest so far observed in a metallanonaborane-type compound, and results principally from a restricted orbital contribution of the Pt(PMe2Ph)2 centre to the PtC2B6 cluster bonding system.
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