Crystal Structure of μ-Oxido-μ-phenolato-bridged Dinuclear Manganese(III) Complex of Schiff-base Ligand with Bromido Coordination

Abstract

C7, N1, O2, O3, and O7 atoms to form a dinuclear manganese molecule A dinuclear manganese(III) complex with 2-(5-nitro-2-hydroxyphenyl)-1,3-bis(2-(5-nitro-2-hydroxybenzylideneamino)-ethyl)imidazolidine (H 3 L NO2 ) was synthesized. The crystal structure was determined by the single-crystal X-ray diffraction method at 90 K. The complex crystallized as [(C 2 H 5 ) 3 NH][Mn 2 ( μ -L NO2 )( μ -O)Br 2 ]·2THF in the orthorhombic space group Pnma with a = 14.890(2), b = 20.903(3), c = 14.7765(19)Å, V = 4599.3(11)Å 3 , D calcd = 1.621 g/cm 3 , Z = 4. The R 1 [ I > 2 σ ( I )] and wR 2 (all data) values are 0.0539 and 0.1260, respectively, for all 5416 independent reflections. The two manganese(III) atoms are bridged by a phenolato-oxygen atom of L NO23– and a μ -oxido-oxygen atom, where each manganese(III) atom is further coordinated by phenolato-oxygen, imino- and imidazolidine-nitrogen atoms of L NO2