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Metal complexes with TCNQ as ligands, [MnIII(salen)(TCNQ)0.5][MnIII(salen)(TCNQ)0.5(CH3OH)]CH3OH·H2O (1) and [FeII(CH3OH)4(TCNQ)2]TCNQ·2CH3CN (2) (where TCNQ and H2salen represent tetracyanoquinodimethane and quadridentate schiff base N,N′-disalicylideneethylenediamine, respectively) were prepared, and crystal structures and magnetic properties were studied. Complex 1 crystallizes in the triclinic space group with cell constants a = 12.000(6), b = 19.986(7), c = 9.494(6) Å, α = 100.67(5), β = 100.01(5), γ = 81.50(4)°, V = 2188(2) Å3, and Z = 2. In 1, two distinct six-coordinate [MnIII(salen)]+ chromophores are bridged by two kinds of TCNQ2− anions (A and B) in μ2 and μ4 fashions to form a one-dimensional structure. Complex 2 crystallizes in the triclinic space group with cell constants a = 10.523(1), b = 14.008(2), c = 8.062(1) Å, α = 94.96(1), β = 111.11(1), γ = 79.96(1)°, V = 1091.3(3) Å3, and Z = 1. In 2, mono-anionic and neutral TCNQ molecules (C and D, respectively) stacks to form columns (···DCCD···), which are linked by the coordination of the nitrile group to [FeII(CH3OH)4]2+. Temperature dependent magnetic susceptibility measurements revealed that magnetic interactions between metal centers in 1 and 2 are very small.

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