Yaoming Xie, Henry F. Schaefer III, R. Bruce King: Binuclear Homoleptic Iron Carbonyls: Incorporation of Formal Iron−Iron Single, Double, Triple, and Quadruple Bonds, Fe2(CO)x (x = 9, 8, 7, 6). In: J. Am. Chem. Soc. 2000, 122, 36, S. 8746–8761 (doi:10.1021/ja001162y).
