Inorg Chem 1996 May;35(11):3235-3241
School of Chemistry, University of Hyderabad, Hyderabad, 500046, A.P., India, Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, and Anorganische Chemie, Universität des Saarlandes, 66041 Saarbrücken, Germany.