1. For reviews, see: (a) G. Raabe, J. Michl, in: S. Patai, Z. Rappoport (Eds.), The Chemistry of Organic Silicon Compounds, vol. 1, Wiley, Chichester, 1989, Chapter 17;
2. (b) T. Müller, W. Ziche, N. Auner, in: Z. Rappoport, Y. Apeloig (Eds.), The Chemistry of Organosilicon Compounds, vol. 2, Wiley, Chichester, 1998, Chapter 16;
3. (c) Y. Apeloig, in: S. Patai, Z. Rappoport (Eds.), The Chemistry of Organosilicon Compounds, Wiley, Chichester, 1989, Chapter 2;
4. (d) A.G. Brook, M.A. Brook, Adv. Organomet. Chem. 39 (1996) 71;
5. (e) J. Escudié, C. Couret, H. Ranaivonjatovo, Coord. Chem. Rev. 178 (1998) 565;