Cordes, H. Angewandte Chemie, 1965 , vol. 77, p. 1017 - 1017 Full Text Show Details Cordes, H. Zeitschrift fuer Naturforschung, 1966 , vol. 21 b, p. 746 - 751 Full Text Show Details Gmelin Handbook: Fe: Org.Verb.A1, 2.1.1.2, page 16 - 18