Coordination compounds of copper, nickel and iron with Schiff bases derived from hydroxynaphthaldehydes and salicylaldehydes

Recent aspects of the stereochemistry of schiff-base-metal complexes

The discrete trinuclear complex [(NEt4){Mn(H2O)(5-Cl-salen)}2{Fe(CN)6}]·H2O, 3, and a two-dimensional heterometal assembly [(NEt4){Mn(5-Cl-salen)}2{Fe(CN)6}]n, 4, have been prepared (NEt4 = tetraethylammonium, 5-Cl-salen = N,N‘-ethylenebis(5-chlorosalicylidene)aminato) dianion). Compound 4 crystallizes in the monoclinic space group P21/c with cell dimensions of a = 13.104(3) A, b = 12.861(3) A, c = 15.526(2) A, β = 105.98(1)°, Z = 2 and is isostructural to the previously synthesized metamagnetic compound, [K{Mn(3-MeOsalen}2{Fe(CN)6}·2DMF]n, 5. The structure assumes a two-dimensional network consisting of the cyclic tetramer (−Mn−NC−Fe−CN−)4 as a net unit [with dimensions of Fe−C1 = 1.947(8) A, Fe−C2 = 1.951(8) A, Mn−N1 = 2.286(7) A, Mn−N2 = 2.266(7) A, Mn−N−C = 154.4(7)°, Mn−N−C = 146.1(7)°]. The magnetic study (magnetic susceptibility vs T, field-cooled magnetization and zero-field cooled magnetization vs T, hysteresis loop and saturation magnetization vs H up to 55 kOe) shows that the compound is a meta...

Synthesis, Crystal Structure, and Magnetic Properties of a Ferrimagnetic Layered Compound [NEt4][Mn(5-Cl-salen)]2[Fe(CN)6] (NEt4 = Tetraethylammonium, 5-Cl-salen = N,N‘-Ethylenebis((5-chlorosalicylidene)aminato))

Paul J. McCarthy

Papers

Inner Complex Chelates. I. Analogs of Bisacetylacetoneethylenediimine and its Metal Chelates1,2