Synthesis, Structure, and Characterization of a Sulfate-Bridged Oxomolybdenum(V) Porphyrin Dimer and Related Monomers Including a Nitrate Complex

Autor:	Katsuya Imanishi, Youichi Sasaki, Taira Imamura, Akie Okamura, Keisuke Umakoshi, Yutaka Okubo, Junichi Tachibana
Rok vydání:	1999
Předmět:	Denticity Dimer Inorganic chemistry chemistry.chemical_element General Chemistry Porphyrin Ion chemistry.chemical_compound Crystallography Monomer chemistry Molybdenum Atom Sulfate
Zdroj:	Bulletin of the Chemical Society of Japan. 72:2241-2247
ISSN:	1348-0634 0009-2673
DOI:	10.1246/bcsj.72.2241
Popis:	New oxomolybdenum(V) porphyrin complexes, [MoO(tmp)(C6H5SO3)] 1, [MoO(tpp)(C6H5SO3)] 2, [MoO(tpp)(HSO4)] 3, [{MoO(tpp)}2(μ-SO4)] 4, and [MoO(tpp)(NO3)] 5, were synthesized and characterized by UV-vis, IR, FAB-MS, and ESR measurements. The structures of the complexes, 1, 4, and 5, were determined by X-ray crystallographic analysis. The benzenesulfonate ion in 1 and the nitrate ion in 5 coordinate to the molybdenum atom as monodentate ligands. The oxidation number of the central molybdenum ion of these complexes was confirmed to be 5+ by ESR measurements. In the dinuclear complex 4, a sulfate ion bridges two molybdenum porphyrins. The dinuclear complex 4 exhibited spin coupling between the two molybdenum nuclei.
Databáze:	OpenAIRE
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