Synthesis, Crystal Structure and Magnetic Properties of a One-Dimensional Cyanide-Bridged Cr-III-Cu-II Complex {[Cu(cyclam)][Cr(bpb)(CN2)](2)center dot 2H(2)}(n)

A one-dimensional cyanide-bridged Cr-III-Cu-II complex {[Cu(cyclam)][Cr(bpb)(CN)(2)](2)center dot 2H(2)O}(n). (cyclam=1, 4,8, 11-tetraazacyclotetradecane, bpb(2-)=1,2-bis (pyridine-2-carboxamido)-benzenate) (1) has been synthesized by the reaction of building blocks [Cu(cyclam)](ClO4)(2) and K[Cr(bpb)(CN)(2)]. Single crystal X-ray diffraction analysis reveals that complex 1 crystallizes in triclinic space group P (1) over bar with a=0.966 73 (19) nm, 6=1.345 1 (3) nm, c= 1.382 0(3) nm, alpha=77.12(3)degrees,beta=76.93(3)degrees, gamma=82.02(3)degrees, V=1.699 1(6) nm(3), Z=2, D-c=1.567 g.cm(-3), mu=1.086 mm(-1), F(000)=828, R-1=0.041 3, wR(2)=0.120 0, the structure of complex 1 is a type of polymer with two different metal centers which are alternatively linked by cyanide group. Magnetic investigations indicate that complex 1 exhibits a weak ferromagnetic coupling between Cr-III and Cu-II centers through the cyanide bridge. CCDC: 972349.