Dynamic behaviour in solution of some benzo[h]quinoline and 8-methylquinoline complexes of palladium(II)
- 1 January 1978
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 11,p. 1497-1501
- https://doi.org/10.1039/dt9780001497
Abstract
Enantiomeric forms of [Pd(dmp)L(OH2)][ClO4][dmp = 2-(dimethylaminomethyl)phenyl, L = benzo[h]quinoline (bquin) or 8-methylquinoline (8Me-quin)] rapidly interconvert in (CD3)2CO solution to give coalescence of the methyl 1H n.m.r. singlets of the dmp ligand. A kinetic study of this process for L = bquin supports a unimolecular displacement of H2O associated with the ligand L rotating from largely above to largely below the co-ordination plane. This is supported by the non-dynamic nature of [Pd(dmp)L(NO3)]. Addition of small amounts of D2O to the (CD3)2CO solution of [Pd(dmp)(bquin)(OH2)][ClO4] considerably reduces the rate of inversion, which probably results from a breakdown of the more reactive ion pairs.Keywords
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