Reaction of phenylmercury acetate with Lewis bases |
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| Institution: | 1. Biomolecular Crystallography Laboratory, Department of Bioinformatics, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur – 613 401, India;2. Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613 401, India;3. IOE, Vijnana Bhavan, University of Mysore, Mysuru 570006, India;4. Unidad de Polímeros y Electrónica Orgánica, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Val3-Ecocampus Valsequillo, Independencia O2 Sur 50, San Pedro Zacachimalpa, Puebla-C.P.72960, México;5. Department of Studies in Physics, University of Mysore, Manasagangotri, Mysuru 570 006, India |
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| Abstract: | Phenylmercury acetate reacts with tributylphosphine in benzene solution to form a 3-coordinate 1:1 adduct of high stability with a large negative enthalpy of formation (K>104 l mol?1, 2H = ?66 kJ mol?1). Similar adducts of lower stability (K<50) are formed by triphenylphosphine, unidentate aliphatic amines and heterocylic bases and pyridine-N-oxide. The bidentate bases tetramethyl-1,2-diaminoethane and 1,10-phenanthroline form chelate, 4-coordinate 1:1 adducts of greater stability than the unidentate N-bases, but no reaction is evident with 2,2′-bipyridine. The reuslts show the ‘soft’ character of the mercury atom and its reluctance to adopt a coordination number greater than three. |
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