Synthesis, spectral and molecular studies of half-sandwich arene ruthenium and Cp*Rh/Cp*Ir complexes containing bidentate P-N and E–N ligands (E = S, Se) based on diphenyl(2-pyridyl)phosphine

Autor:	R. Nagarajaprakash, Kollipara Mohan Rao, Mahesh Kalidasan
Rok vydání:	2015
Předmět:	Denticity Chemistry Ligand Inorganic chemistry Center (category theory) chemistry.chemical_element Metallacycle Medicinal chemistry Rhodium Ruthenium chemistry.chemical_compound Materials Chemistry Iridium Physical and Theoretical Chemistry Phosphine
Zdroj:	Journal of Coordination Chemistry. 68:3839-3851
ISSN:	1029-0389 0095-8972
DOI:	10.1080/00958972.2015.1087514
Popis:	The chalcogenide ligands {E=PPh2Py} (E = O, S, Se) were prepared by direct oxidation of diphenyl(2-pyridyl)phosphine using H2O2, S and Se powder, respectively. The reaction of ligand with starting metal precursors [(arene)RuCl2]2 {M = Ru, arene = benzene; p-cymene} and [Cp*MCl2]2 (M = Rh, Ir) afforded a series of cationic half sandwich complexes, [(arene/Cp*)MCl{κ2-(NE)-EPPh2Py)}]+. Reaction of O=PPh2Py with precursors yielded known complexes [(arene/Cp*)MCl{κ2-(PN)-PPh2Py)}]+ instead of expected complexes [(arene/Cp*)MCl{κ2-(NO)-O=PPh2Py)}]+. All new complexes were isolated as PF6- counterion and characterized by spectroscopic techniques like FT-IR, NMR, mass, UV-Vis. Some representative complexes were structurally determined by X-ray crystallographic analysis, revealing typical three-legged piano stool geometry around the metal center with a five-membered metallacycle.
Databáze:	OpenAIRE
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