Synthesis, X-ray crystal structures and magnetic properties of Cu(II)(NITpPy)2[N(CN)2]2•solv (NITpPy = nitronyl nitroxide radical, solv = H2O or CH3CN).: From discrete molecules to 2-D polymeric coordination compounds

The synthesis, X-ray crystal structures and magnetic properties of five new copper(II) complexes containing nitroxide radicals Cu(NITpPy)(2)(NO3)(2) (1), Cu(NITpPy)(2)(CH3COO)(2) (2), Cu(NITpPy)(2)[N(CN)(2)](2). (H2O)(2) (3), Cu(NITpPy)(2)[N(CN)(2)](2). 3CH(3)CN (4) and Cu(NITpPy)(2)[N(CN)(2)](2). 2CH(3)CN (5) are reported. Compounds 1-3 consists of discrete molecules in the solid state, but in compounds 4 and 5 the Cu(NITpPy)(2)(2+) units are connected through N(CN)(2)(-) bridging ligands in mu (2) coordination developing, respectively, into one-dimensional and two-dimensional polymeric networks. For all compounds, the magnetic properties have been investigated and antiferromagnetic interactions dominate at low temperature. (C) 2001 Elsevier Science B.V. All rights reserved.