1. Review articles include: (a) E.L. Mutterties, M.J. Krause, Angew. Chem. Int. Ed. Engl. 22 (1983) 147. (b) D.A. Roberts, G.L. Geoffroy, in: G. Wilkinson, F.G.A. Stone, E.W. Abel (Eds.), Comprehensive Organometallic Chemistry, vol. 6, Pergamon, Oxford, 1982, pp. 763–877. (c) W.L. Gladfelter, G.L. Geoffroy, Adv. Organomet. Chem. 18 (1980) 207. (d) W. Beck, B. Niemer, M. Wieser, Angew. Chem. Int. Ed. Engl. 32 (1993) 923.
2. (a) R.C. Kerber, B.R. Waldbaum, J. Organomet. Chem. 513 (1996) 277, and references cited therein.
3. (b) R. Fierro, T.E. Bitterwolf, A.L. Rheingold, G.P.A. Yap, L.M. Liable-Sands, J. Organomet. Chem. 524 (1996) 19, and references cited therein.
4. (c) I. Kovács, M.C. Baird, Organometallics 15 (1996) 3588.
5. (d) S.S. Lee, T.-Y. Lee, J.E. Lee, I.-S. Lee, Y.K. Chung, Organometallics 15 (1996) 3664.