2,2 '-bis((di-tert-butylphosphino)methyl)-1,1 '-biphenyl (ditbi): a bulky analogue of bisbi. The crystal structure of [Rh2Cl2(1,5-cod)(2)(mu-ditbi)]

L J Higham, K Heslop, P G Pringle, A G Orpen

Research output: Contribution to journalArticle (Academic Journal)peer-review

5 Citations (Scopus)


Diphosphine 2,2'-bis(di-tert-butylphosphino)methyl)-1,1'-biphenyl (ditbi) is synthesised by the addition of Bu'P-2(BH3)Li to 2,2'-bis(bromomethyl)-1,1'-biphenyl, followed by deprotection with diethylamine. Treatment of [Rh2Cl2(1,5- cod)(2)] with ditbi gives [Rh2Cl2(1,5-cod)(2)[mu-ditbi)] (2) as confirmed by its X-ray crystal structure determination. Hydroformylation of 1-hexene using [Rh(acac)(CO)(2)/ditbi as catalyst gave n- and iso-heptanal in a ratio of 1:1. (C) 2004 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)2975-2978
Number of pages4
JournalJournal of Organometallic Chemistry
Issue number19
Publication statusPublished - 22 Sep 2004


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