Zaslat záznam emailem: catena-Poly[[bis­(μ-5-bromo­pyridine-3-carboxyl­ato-κ(2) O:O′)dicopper(II)]-bis­(μ-5-bromo­pyridine-3-carboxyl­ato)-κ(3) O,O′:N;κ(3) N:O,O′]