1. See for ecample, Cotton, F. A.; Wilkinson, G.Advanced Inorganic Chemistry, 5th Ed.; J. W. Wiley & Sons, Inc. New York NY, 1988; pp 326−329. Greenwood, N. N.The Chemistry of the Elements.Developments in Inorganic Nitrogen Chemistry; Colburn, C. B., Ed.; Elsevier Scientific Publishing Co. Amsterdam, 1973; Vol 2.