An Oxide-Centered Trinuclear Manganese(III) Compound with a Bulky Phenol-Pyrazolate Ligand

作者：Viciano Chumillas Marta; Tanase Stefania; Roubeau Olivier; Teat Simon J; Jos de Jongh L; Reedijk Jan

来源：European Journal of Inorganic Chemistry, 2010, (6): 947-951.

DOI：10.1002/ejic.200901007

• Manganese
• Cluster compounds
• Magnetic properties
• Bridging ligands
• Phenol-pyrazole ligand

A new oxide-centered trinuclear manganese(III) compound with the formula [Mn(3)(mu(3)-O)(naphpz)(3)(O(2)CMe)(MeOH)(2)](n) (1) {H(2)naphpz = 2-[1H-pyrazol-5(3)-yl]naphthalen-1-ol} has been synthesized and characterized. Three bulky doubly deprotonated phenol-pyrazole ligands are coordinated to the three manganese(III) ions with a mu(3)-oxide bridge in the same plane. Methanol and acetate ligands are at the apical positions of the manganese(III) ions. The trinuclear units are bridged by acetate ligands in the anti-anti mode, leading to the formation of 1-D chains. Temperature-dependent magnetic susceptibility studies indicate the presence of overall antiferromagnetic interactions with magnetic exchange constants of J(1) approximate to -1.9 and J(2) approximate to -5.5 cm(-1) and g = 1.91 Weak antiferromagnetic interactions (zJ' = -0.37 cm(-1)) between the trinuclear units in the 1-D chain (and between the chains) in compound 1 are present.

• 出版日期2010-2