Poly[copper(I)-mu-bromo-mu-2,3-dimethylpyrazine-N:N'].

In the structure of the title compound, [CuBr(C(6)H(8)N(2))](n), each Cu(2+) cation is surrounded by two 2,3-dimethylpyrazine ligands and two Br(-) anions in a distorted tetrahedral arrangement. The Cu(2+) cations and Br(-) anions form (Cu(2)Br(2))(2) rhomboid dimers located around a centre of inversion. The 2,3-dimethylpyrazine ligands connect the Cu(2+) cations in the dimers into sheets parallel to (010).