The reaction of [Mn(5-Clsalen)(H2O)]ClO4 with [K(18-crown-6)(H2O)2]3[Fe(CN)6] in methanol gave a double salt, [K(18-crown)(MeOH)2][Mn(5-Clsalen)(H2O)(MeOH)] 2[Fe(CN)6]·4MeOH 1 [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) Å, β = 98.83(2)°, Z = 4, V = 7553(4) Å3. 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) Å in the former linkage and 2.684(8) Å 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°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.
|Number of pages||6|
|Journal||Journal of the Chemical Society. Dalton Transactions|
|Publication status||Published - 1998 Dec 7|