Oxygen can bind to metals in several ways. Proposals have been made for linear, bent, an...

Oxygen can bind to metals in several ways. Proposals have been made for linear, bent, and side-on bonding in hemoglobin and similar com-pounds. Review the arguments for each of these and the evidence for the structure used in this chapter for . (See W. Kaim and B. Schwederski, Bioinorganic Chemistry: Inorganic Elements in the Chemistry of Life, John Wiley & Sons, Chichester, England, 1994, pp. 92-96, or a similar source.)