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A tetranuclear manganese complex [Mn4(HL)4(MeOH)4(SCN)2]·3MeOH (1) and a one-dimensional assembly of [Mn4] units, [Mn4(HL)4(MeOH)4(N(CN)2)2]·2.5MeOH (2) (H3L = 2,6-bis(hydroxymethyl)-4-methyl-phenol), have been synthesized and studied. Complexes 1 and 2 crystallize in the triclinic space group P 1and monoclinic space group P21/n, respectively. Complex 1 possesses a mixed-valence tetranuclear dicubane unit, which comprises two MnⅡ and two MnⅢ ions. Complex 2 is built from the similar tetranuclear [Mn4] units connected through two N(CN)2-anions into a 1-D chain. The temperature dependence of the magnetic susceptibilities of 1 and 2 indicates ferromagnetic interactions between the manganese ions. Frequency-dependent out-of-phase signals of alternating current magnetic susceptibilities are observed in the low temperature range for both complexes, indicating a slow magnetic relaxation.
A tetranuclear manganese complex [Mn4 (HL) 4 (MeOH) 4 (SCN) 2] 3MeOH and a one-dimensional assembly of [Mn4] units, ) 2) 2] 2.5MeOH (2) (H3L = 2,6-bis (hydroxymethyl) -4-methyl- phenol), have been synthesized and studied. Complexes 1 and 2 crystallize in the triclinic space group P 1 and monoclinic space group P21 / n, respectively. Complex 1 possesses a mixed-valence tetranuclear dicubane unit, which comprises two Mn II and two Mn III ions. Complex 2 is built from the similar tetranuclear [Mn 4] units connected through two N (CN) 2 -anions into The temperature dependence of the magnetic susceptibilities of 1 and 2 indicates ferromagnetic interactions between the manganese ions. Frequency-dependent out-of-phase signals of alternating current magnetic susceptibilities are observed in the low temperature range for both complexes, indicating a slow magnetic relaxation