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Control of the SO 2 Coordination Mode at the (Monochelate)rhodium Complex ClRh(P∼O) with the Hemilabile Ligand Cy 2 PCH 2 CH 2 OCH 3
Author(s) -
Lindner Ekkehard,
Keppeler Berthold,
Fawzi Riad,
Steimann Manfred
Publication year - 1996
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19961290920
Subject(s) - chemistry , rhodium , ligand (biochemistry) , trigonal crystal system , hexane , stereochemistry , crystallography , chelation , polarity (international relations) , acetone , polar , medicinal chemistry , crystal structure , inorganic chemistry , catalysis , organic chemistry , receptor , astronomy , cell , biochemistry , physics
The SO 2 coordination mode at the rhodium complex [ClRh(P∼O)()] ( 1 ) [ η 2 ( O,P )‐chelated Cy 2 PCH 2 CH 2 OCH 3 ligand; P∼O 1 ( P )‐coordinated] is controlled by the hemilabile ligand Cy 2 PCH 2 CH 2 OCH 3 and shows a dependence on the polarity of the solvent. In polar organic solvents (e.g. acetone) the addition of sulfur dioxide results in the formation of a trigonal‐pyramidal oriented SO 2 group in [ClRh(η 1 ‐SO 2 )(P∼O)()] ( 2a ). However, in nonpolar media (e.g. n ‐hexane) a trigonal‐coplanar geometry of the SO 2 unit in [ClRh(η 1 ‐SO 2 )(P∼O) 2 ] ( 2b ) is favored.