Trimanganese complexes with a linear MnIIMnIIIMnII assemblage bridged by carbohydrates

Reaction of manganese(II) salts (MnX 2 ·nH 2 O, X = Cl, Br, NO 3 ) with tris[(N-aldosyl)aminoethyl]amines L n , prepared by the reaction between tris(aminoethyl)amine (tren) with aldose [D-mannose (D-man) (L 1 )] or L-rhamnose [L-rha = 6-deoxy-L-man) (L 2 )] in situ, affords red–orange crystals formulated as [(MnL n ) 2 Mn(H 2 O)]X 3 (n = 2, X = Cl 1; n = 2, X = Br 2; n = 2, X = NO 3 3; n = 1, X = Cl 4), complexes 3 and 4 are characterized by X-ray crystallography.