Y. Farhangi
May 15, 1987
Citations
0
Influential Citations
2
Citations
Journal
Inorganica Chimica Acta
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, †H = −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.