An assembly compound [K(18-crown-6)(MeOH)2][Mn(5-Clsalen)(H2O)(MeOH)]2[Fe(CN)6]•4MeOH of isolated metal centers and conversion into a ferrimagnetic compound by desolvation [18-crown-6 = 1,4,7,10,13,16-hexaoxacyclooctadecane, 5-Clsalen = N,N′-ethylenebis(5-chlorosalicylideneiminate)]

The reaction of [Mn(5-Clsalen)(H2O)]ClO4 with [K(18-crown-6)(H2O)(2)][Fe(CN)(6)] in methanol gave a double salt, [K(18-crown)(MeOH)(2)][Mn(5-Clsalen)(H2O)(MeOH)](2)[Fe(CN)(6)]. 4MeOH I [5-Clsalen = N,N'-ethylenebis(5-chlorosalicylideneiminate), 18-crown-6 = 1,4,7,10, 13,16-hexaoxacyclooctadecane]. Compound 1 crystallizes in the monoclinic space group C2/c with cell dimensions of a = 29.065(5), b = 14.261(8), c = 18.443(6) Angstrom, beta = 98.83(2)degrees, Z= 4, V= 7553(4) Angstrom(3). The two [Mn(5-Clsalen)(H2O)(MeOH)](+) cations and the [Fe(CN)(6)](3-) anion are hydrogen bonded, through the Mn-OH2 ... NC-Fe and Mn-MeOH ... NC-Fe linkages, to form a two-dimensional network structure; the O ... N separation is 2.768(8) Angstrom in the former linkage and 2.684(8) Angstrom in the latter. The [K(18-crown-6)(MeOH)(2)](+) cations are situated between the two-dimensional layers. Compound 1 was partially desolvated in air to give [K(18-crown-6)][Mn(5-Clsalen)(H2O)](2)[Fe(CN)(6)] 1' which exhibited a short range magnetic interaction due to the local formation of magnetically coupled sublattices. Compound 1' was fully desolvated by heating to 180 degrees C to give [K(18-crown-6)][Mn(5-Clsalen)](2)[Fe(CN)(6)] 2 which exhibited spontaneous magnetization due to the formation of a network extended by Mn-NC-Fe linkages throughout the lattice.