Mono- and di-nuclear complexes of molybdenum carbonyl derivatives with pyridine-2-carbaldehyde azine and phosphines: syntheses, structure, spectroscopic and electrochemical characterisation and solvatochromic effects

Autor:	Moisés E. Vargas, Juan Granifo, Scott Stephen Fielder, A. B. P. Lever, Elaine S. Dodsworth, David H. Farrar
Rok vydání:	1996
Předmět:	Stereochemistry Infrared Solvatochromism chemistry.chemical_element General Chemistry Electrochemistry Electron spectroscopy Medicinal chemistry Azine chemistry.chemical_compound chemistry Molybdenum Cyclic voltammetry Single crystal
Zdroj:	Journal of the Chemical Society, Dalton Transactions. :4369
ISSN:	1364-5447 0300-9246
DOI:	10.1039/dt9960004369
Popis:	Complexes containing phosphorus-donor ligands, [Mo(CO)3(PPh3)(pa)](pa = pyridine-2-carbaldehyde azine), [Mo2(CO)6(PPh3)2(µ-pa)], [Mo2(CO)7(PPh3)(µ-pa)] and [Mo2(CO)6(µ-dppe)(µ-pa)][dppe = 1,2-bis(diphenylphosphino)ethane], have been characterised by infrared and electronic spectroscopy, cyclic voltammetry and for the [Mo2(CO)6(µ-dppe)(µ-pa)] complex a single crystal X-ray structure. All of the complexes show strong solvatochromism which has been analysed both by using the empirical parameter E*MLCT and by using McRae's equation. The results are compared with those of their parent complexes [Mo(CO)4(pa)] and [Mo2(CO)8(µ-pa)], and with the results of extended-Huckel calculations with charge iteration.
Databáze:	OpenAIRE
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