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Palladium and Rhodium Complexes with Planar-Chiral Carborane Ligands

✍ Scribed by Henri Brunner; Andreas Apfelbacher; Manfred Zabel

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
458 KB
Volume
2001
Category
Article
ISSN
1434-1948

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✦ Synopsis

Base degradation of the prochiral 1-diphenylphosphanyl-2phenyl-1,2-dicarba-closo-dodecaborane (1) affords the planar-chiral 7-diphenylphosphanyl-8-phenyl-7,8-dicarbanido-undecaborate anion (2). Resolution of the racemic anion carried out using a well-established procedure, gave the internally diastereomeric palladium complexes 3R-R and 3R-S. These complexes were separated by fractional crystallization. A single-crystal X-ray analysis of 3R-R established the exo-nido bonding of the carborane ligand via the phosphorus atom and the adjacent BH group, and the (R) configuration

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