Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31006
Title: Novel platinum group metal complexes bearing bidentate chelating pyrimidyl-NHC and pyrimidyl imidazolyl-thione ligands : syntheses, spectral and structural characterization
Authors: Anna, VR
Pallepogu, R
Zhou, ZY
Kollipara, MR
Keywords: 1-Pyrimidyl-3-methylimidazolyl bromide
Iridium
NHC
Rhodium
Ruthenium
Issue Date: 2012
Publisher: Elsevier
Source: Inorganica chimica acta, 2012, v. 387, p. 37-44 How to cite?
Journal: Inorganica chimica acta 
Abstract: A family of novel platinum group metal complexes containing bidentate chelating 1-pyrimidyl-3-methylimidazolyl bromide (HL1·Br) and 1-pyrimidyl-3-methylimidazolyl-2-thione (L2) ligands has been synthesized. The synthetic protocol for the formation of these complexes differs from one ligand to the other. Treatment of ligand (HL1·Br) with the metal precursors led to the formation of complexes via in situ carbene transfer reactions. The silver-NHC complex (1) was formed by the reaction of HL1·Br with silver oxide under light-free conditions. Subsequent addition of appropriate metal precursors to the silver-NHC complex yielded [(η 6-arene)Ru(L1)Cl] PF 6 complexes {arene = C 6H 6 (2), p- iPrC 6H 4Me (3), C 6Me 6 (4)} on stirring at room temperature, whereas the complexes [CpRu(L1)(PPh 3)]PF 6 {Cp = C 5H 5 (5), C 9H 7 (6)} were obtained under reflux conditions. In the case of ligand L2, stirring of equimolar quantities of metal precursors and the ligand at room temperature yielded [(η 6-arene)Ru(L2)Cl]PF 6 {arene = C 6H 6 (7), p- iPrC 6H 4Me (8), C 6Me 6 (9)}, and [Cp*M(L2)Cl]PF 6 {Cp* = C 5Me 5, M = Rh (10), Ir (11)}. All these complexes were characterized by CHN analysis, IR, NMR and mass spectrometry besides confirmation by single crystal X-ray diffraction studies for some representative complexes as their hexafluorophosphate salts [3]PF 6, [5]PF 6, [8]PF 6 and [10]PF 6.
URI: http://hdl.handle.net/10397/31006
ISSN: 0020-1693
EISSN: 1873-3255
DOI: 10.1016/j.ica.2011.12.048
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