Magnetic Properties of a Series of Trinuclear Complexes (CuL)2Mn·xB (L Representing the Deprotonated Form of N-(4-Methyl-6-oxo-3-azahept-4-enyl)oxamic Acid and B Representing Respectively H2O (x = 5, 4.5, 3, 1), (CH3)2SO (x = 2), and C5H5N (x = 4)). Crystal and Molecular Structure of (CuL)2Mn·2(CH3)2SO | Publicación