Brunner, Henri and Winter, Andreas and Breu, Josef (1998) Enantioselective catalysis - Part 114. Chirostructural analysis of bis(diphenylphosphanyl)ethane transition metal chelates. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 553 (1-2). pp. 285-306. ISSN 0022-328X, 1872-8561
Full text not available from this repository.Abstract
Transition metal complexes of bis(diphenylphosphanyl)ethane type ligands play an important role in asymmetric catalysis. The four phenyl substituents form a chiral array responsible for the high optical yields achieved with these ligands. In this paper we present an analysis of the phenyl ring orientations based on a search in the Cambridge Structural Database (CSD). The phenyl arrangements are not only subdivided into the well known face and edge exposed types, but they are additionally distinguished by the sign of the torsion angle M-P-C-ipso-C-ortho according to their chirality into face-P, face-M, edge-P, and edge-M. This approach allows a more differentiated examination. We found, that the phenyl rings prefer certain orientations within a small range depending on their axial or equatorial position and the ligand chirality. A comparison of these results with those of an analysis of achiral bis(diphenylphosphanyl)ethane complexes shows, that the substituents at the ligand backbone of the chiral phosphines reinforce the typical phenyl ring orientation in optically active phosphine complexes. (C) 1998 Elsevier Science S.A.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | X-RAY STRUCTURE; CYCLOPENTADIENYL-OSMIUM CHEMISTRY; SIGMA-ACETYLIDE COMPLEXES; PERCHLORATE TETRAHYDROFURAN SOLVATE; CRYSTAL-STRUCTURE; ASYMMETRIC HYDROGENATION; MOLECULAR-STRUCTURE; PHOSPHINE-LIGANDS; RHODIUM(I) COMPLEXES; RUTHENIUM COMPLEXES; bis(diphenylphosphanyl)ethane type ligands; phenyl ring orientation; chirality transfer; conformational analysis; structural analyses |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Prof. Dr. Henri Brunner |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Feb 2023 08:37 |
| Last Modified: | 28 Feb 2023 08:37 |
| URI: | https://pred.uni-regensburg.de/id/eprint/50074 |
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