1. Formation of an Association Complex without a Substitution Reaction Occurring between Methylcobalamin and Cyanide
2. References for alkylcobamides plus cyanide include(a) N.E. Brasch, R.J. Haupt, Inorg. Chem. 39 (2000) 5469;(b) N.E. Brasch, A.G. Cregan, M.L. Vanselow, Dalton Trans. (2002) 1287;(c) M.S.A. Hamza, X. Zou, K.L. Brown, R. van Eldik, Inorg. Chem. 40 (2001) 5440;(d) N.E. Brasch, M.S.A. Hamza, R. van Eldik, Inorg. Chem. 36 (1997) 3216;(e) W.W. Reenstra, R.H. Abeles, W.P. Jencks, J. Am. Chem. Soc. 104 (1982) 1016;(f) F. Nome, M.C. Rezende, C.M. Sabóia, A. Clemente da Silva, Can. J. Chem. 65 (1987) 2095;(g) K.L. Brown, J. Am. Chem. Soc. 109 (1987) 2277;(h) K.L. Brown, S. Satyanarayana, Inorg. Chim. Acta 201 (1992) 113.
3. M.S.A. Hamza, A.G. Cregan, N.E. Brasch, R. van Eldik, J. Chem. Soc., Dalton Trans. (2003) 596.
4. Note that in Ref. [2c], Eq. (2) was used in a simplified form (see Eq. (4) [2c]), since A0 is practically zero.
5. A simple, convenient and direct method for assessing the purity of cobalamins