“…The Fe2(CO)6N 2 core is typical of a wide set of compounds Piron, Piret & Van Meerssche, 1967;Jarvis, Job, Kilbourn, Mais, Owston & Todd, 1967;Bright & Mills, 1967;Bagga, Baikie, Mills & Pauson, 1967;Doedens, 1968Doedens, , 1970Dahl, Costello & King, 1968;Doedens & Ibers, 1969;Little & Doedens, 1972;Madden, Carty & Birchall, 1972;Carty, 1972;Khare & Doedens, 1976;Tikhonova et al, 1976) which can be collected into two classes: (1) with a N-N bond, and (2) without a N-N bond: our complex belongs to the second class, owing to the long N...N distance [2.388 (9) A].…”