Absolute configuration, coordination and stereochemical influence of 1,3,5,7-tetramethyl-2,6,9-trioxo-bicyclo[3,3,1]nona-3,7-diene in Rh(I) and cationic Pd(II) complexes |
| |
Authors: | Vincenzo G Albano Magda Monari Giuseppina Roviello Francesco Ruffo |
| |
Institution: | a Dipartimento di Chimica ‘G. Ciamician’, Università di Bologna, Via Selmi 2, I-40126 Bologna, Italy b Facoltà di Agraria, Dipartimento di Chimica, Università di Napoli ‘Federico II’, Complesso Universitario di Monte S. Angelo, via Cintia, I-80126 Naples, Italy c Dipartimento di Chimica, Università di Napoli ‘Federico II’, Complesso Universitario di Monte S. Angelo, via Cintia, I-80126 Naples, Italy |
| |
Abstract: | Relevant stereochemical and coordination features of 1,3,5,7-tetramethyl-2,6,9-trioxo-bicyclo3,3,1]nona-3,7-diene (TOND), a chiral molecule of C2 symmetry are described. The X-ray crystal structure of RhCl{(S)-CHPhMeNH2}{(+)-TOND}] has ascertained that the absolute configuration of (+)-TOND is R,R. Furthermore, the synthesis of stable cationic Pd(II) π-allyl complexes of general formula Pd(η3-allyl)(TOND)]BF4] has allowed to probe the ability of this ligand to afford stereoselective coordination of prochiral fragments. The X-ray molecular structure of the representative compound Pd(η3-crotyl)(TOND)]BF4] has been determined. Finally, the influence of TOND on the stereochemistry of prochiral nitrogen donors of diamine and phosphamine chelates has been explored in rhodium complexes of general formula Rh(chelate)(TOND)]BF4]. The configurations of the nitrogen donors have resulted as stereospecifically selected by the presence of TOND. |
| |
Keywords: | Palladium Rhodium Diolefin Crystal structure Absolute configuration |
本文献已被 ScienceDirect 等数据库收录! |
|