1. For parts 40 and 61, resp., of these series see:V. Rapić, K. Schlögl, andB. Steinitz, Mh. Chem.108, 767 (1977).
2. F. Vögtle undP. Neumann, Tetrahedron26, 5847 (1970).
3. Cf. for instanceCh. Krieger, E. Langer, andH. Lehner, Mh. Chem.107, 19 (1976);Ch. Krieger, H. Lehner, andK. Schlögl, Mh. Chem.107, 195 (1976);C. Glotzmann, E. Langer, H. Lehner, andK. Schlögl, Mh. Chem.106, 763 (1975) and previous papers cited therein.
4. Cf.K. Schlögl andH. Falk, in: Methodicum Chimicum (F. Korte, ed.), Vol.8, p. 433, Stuttgart: G. Thieme. 1974: and p. 469, resp. New York: Academic Press. 1976.
5. F. L. Hedberg andH. Rosenberg, J. Amer. Chem. Soc.91, 1258 (1969):U. T. Mueller-Westerhoff andP. Eilbracht, J. Amer. Chem. Soc.94, 9272 (1972).