| Popis: |
The cycloplatinated dichloro-bridged complex [(2-Tolpy)Pt(μ-Cl)] 2 (1), obtained by treatment of 2-tolylpyridine with K 2PtCl 4, reacts with different N-donor ligands in a 1:2 molar ratio in chloroform to give the corresponding mononuclear complexes [(2-Tolpy)Pt(L)Cl] [L = pyridine (2), 2-trifluoromethylpyridine (3), 3-trifluoromethylpyridine (4), 4-trifluoromethylpyridine (5), 2,6-dibromopyridine (6), 2-tolylpyridine (7) and morpholine (8)]. Compounds 2-5 and 8 exist as a single isomer in solution which show a trans-C,Cl geometry. In the case of compounds 6 and 7 a mixture of two isomers (trans-C,Cl and trans-C,L) was obtained and its relative ratio depends on the temperature. The crystal and molecular structures of compounds 5 and 7 were determined by X-ray crystallography. © 2011 Elsevier Ltd. All rights reserved. |
Full Text from ScienceDirect