Triply Interpenetrated Structure of {MnII(L)2[AgI(CN)2]2}{MnII(H2O)2[AgI(CN)2]2} (L = 4-CNpy or py-4-aldoxime)

Two novel 3D network coordination polymers {Mn(L)2[Ag(CN)2]2}{Mn(H2O)2[Ag(CN)2]2} (L = 4-CNpy (1) or py-4-aldoxime (2)) (4-CNpy = 4-cyanopyridine; py-4-aldoxime = pyridine-4-aldoxime) were synthesized and characterized by using single-crystal X-ray analysis and magnetic measurements. Both complexes have two distinct octahedral manganese atoms, Mn(1) and Mn(2), linked by a [Ag(CN)2]− unit. The pyridine ring of two Ls coordinate at the apical positions of Mn(1). On the other hand, at the apical positions of Mn(2), two H2O are coordinated. The apical axis of Mn(1) is not parallel to the apical axis of Mn(2). Therefore, {Mn[Ag(CN)2]2} networks in 1 and 2 are distorted and form three-dimensional (3D) frameworks. There are large channels in the 3D networks; however, triple interpenetration was found in 1 and 2. From the temperature dependence of magnetic susceptibility, there is very weak antiferromagnetic interaction between the Mn atoms bridged by a [Ag(CN)2]− unit in 1 and 2.