4834 (44) Several heme proteins such as metmyogiobin hydroxide and methemoglobin hydroxide (and other derivatives) contain spin equilibrium Fe(lil). but it is not certain whether or not a change in coordination number from six to five is also involved. See for example: J. K. Beattie and R. J. West, J. Am. Chem. Soc.,96, 1933 (1974). in this work, the high-spin and low-spin
"states" of a metmyoglobin hydroxide are reported to have spin lifetimes Of
