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Enantiomerically Pure Bis(phosphanyl)carbaborane(12) Compounds
Author(s) -
Bauer Sebastian,
Tschirschwitz Steffen,
Lönnecke Peter,
Frank René,
Kirchner Barbara,
Clarke Matthew L.,
HeyHawkins Evamarie
Publication year - 2009
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200900304
Subject(s) - chemistry , rhodium , hydroformylation , catalysis , molybdenum , transition metal , homogeneous , medicinal chemistry , organic chemistry , physics , thermodynamics
Enantiomerically pure ( R P , R P )‐ and ( R P , S P )‐1,2‐bis[1‐adamantyloxy‐(–)‐menthyloxyphosphanyl]‐ closo ‐dicarbaborane(12), 1,2‐bis[bis(–)‐menthyloxyphosphanyl]‐ closo ‐dicarbaborane(12)and 1,2‐bis[bis(4‐ tert ‐butylphenyloxy)phosphanyl]‐ closo ‐dicarbaborane(12) were synthesised by the reaction of dilithiated 1,2‐dicarba‐ closo ‐dodecaborane(12) with two equivalents of the corresponding chlorophosphite. The phosphonites are stable towards epimerisation, oxygen and water. P ··· P through‐space coupling was observed, and the 3 J PP coupling constants were determined by spectral simulation and DFT calculations. Late transition‐metal complexes with molybdenum and rhodium were prepared to study the coordination properties of the bis(phosphanyl)carbaborane(12) compounds. Catalytic properties of various rhodium complexes were investigated in homogeneous catalytic hydroformylation reactions with various olefins. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)