A 1 2 ADDITION COMPOUND OF CADMIUM BROMIDE WITH 3-METHYL-4-NITROPYRIDINE N-OXIDE/

catena-Poly[bis(3-methyl-4-nitropyridine N-oxide-O)cadmium-di-mu-bromo ], [Cd(C6H6N2O3)2Br2], which belongs to a group of potential nonlinear optical materials, crystallizes in the noncentrosymmetric space group Fdd2. The Cd atom is octahedrally coordinated to two O atoms from the trans 3-methyl-4-nitropyridine N-oxide ligands in the axial positions and four Br atoms lying in the equatorial plane. The coordination oct ahedra form one-dimensional chains along the short c axis by edge-shar ing through the Br atoms, with each Cd atom located on a crystallograp hic diad axis.