The title Mn(III) compound, {[Mn(C(18)H(18)N(2)O(4))(CH(3)COO)]·CH(3)OH}(n), was synthesized by a reaction between mangan-ese(II) acetate and ethyl-enebis(4-meth-oxy-salicylaldimine). The structure is made up of bis-(4-meth-oxy-salicyldene)ethyl-enediaminatomanganese(III) units bridged by acetate groups, with Mn-N = 1.9786 (9), Mn-O = 1.8784 (10) and Mn-O(acetate) = 2.056 (9) and 2.2571 (9) Å, forming a one dimensional polymer (-Mn-acetate-Mn-acetate-) along [100]. The Mn(III) atom is in a Jahn-Teller-distorted octa-hedral environment with cis angles ranging from 81.87 (4) to 96.53 (4)° and trans angles ranging from 166.11 (3) to 173.93 (3)°. The methanol solvent mol-ecule is hydrogen bonded to the phenolate O atom. In addition to this classical hydrogen bond, there are weak C-H⋯O inter-actions. The structure was determined from a crystal twinned by pseudo-merohedry.
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