Crystal structures of four dimeric manganese(II) bromide coordination complexes with various derivatives of pyridine -oxide.

Four manganese(II) bromide coordination complexes have been prepared with four pyridine -oxides, . pyridine -oxide (PNO), 2-methyl-pyridine -oxide (2MePNO), 3-methyl-pyridine -oxide (3MePNO), and 4-methyl-pyridine -oxide (4MePNO). The compounds are bis-(μ-pyridine -oxide)bis-[aqua-dibromido-(pyridine -oxide)manganese(II)], [MnBr(CHNO)(HO)] (), bis-(μ-2-methyl-pyridine -oxide)bis-[di-aqua-dibromido-manganese(II)]-2-methyl-pyridine -oxide (1/2), [MnBr(CHNO)(HO)]·2CHNO (), bis-(μ-3-methyl-pyridine -oxide)bis-[aqua-dibromido-(3-methyl-pyridine -oxide)manganese(II)], [MnBr(CHNO)(HO)] (), and bis-(μ-4-methyl-pyridine -oxide)bis-[di-bromido-methanol(4-methyl-pyridine -oxide)manganese(II)], [MnBr(CHNO)(CHOH)] ().