Journal
INORGANICA CHIMICA ACTA
Volume 363, Issue 11, Pages 2652-2660Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2010.05.012
Keywords
Platinum(II) complexes; Palladium(II) complexes; 4-AminoTEMPO; DMSO; Crystal structures
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Funding
- Natural Sciences and Engineering Research Council of Canada
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Pt(II) and Pd(II) compounds containing the free radical 4-aminoTEMPO (4amTEMPO) were synthesized and characterised by X-ray diffraction methods. The disubstituted complexes cis-and trans-Pt(4amTEMPO)(2)I(2) were studied. The trans isomer was prepared from the isomerisation of the cis analogue. The two Pd(II) compounds trans-Pd(4amTEMPO)(2)X(2) (X = Cl and I) were also characterised by crystallographic methods. A mixed-ligand complex cis-PL(DMSO)(4amTEMPO)Cl(2) was synthesized from the isomerisation of the trans isomer in hot water. Its crystal structure was also determined. In all the complexes, the 4amTEMPO ligand is bonded to the metal through the -NH(2) group, since the nitroxide O atom is not a good donor atom for the soft Pt(II) and Pd(II) metals. The conformation of the 4-aminoTEMPO ligand was compared to those of the few reported structures in the literature. (C) 2010 Elsevier B.V. All rights reserved.
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