1. N. F. Curtis,Coord. Chem. Rev., 3, 3 (1968).
2. L. F. Lindoy and D. H. Busch in W. L. Jolly (Ed.),Preparative Inorg. Reactions, 6, 1 (1971).
3. B.E. Douglas,Inorg. Synthesis, 18, 1 (1978).
4. V. B. Rana and M. P. Teotia,Ind. J. Chem., 19A, 267 (1980).
5. V. B. Rana and M. P. Teotia,XX ICCC, (1979).