Supramolecular assemblies of new 2-D complexes: Syntheses, crystal structures, spectroscopic and magnetic properties of {[MnAu2(CN)(4)(NITpPy)(2)(H2O)(2)]}(n) and {[Co(N(CN)(2))(2)(NITpPy)(2)(H2O)(2)]}(n)

摘要

Two new complexes, {[MnAu2(CN)(4)(NITpPy)(2)(H2O)(2)]}(n) (1) and {[Co(N(CN)(2))(2)(NlTpPY)(2)(H2O)(2)]}(n) (2), have been synthesized and characterized. The single-crystal X-ray analysis for the complexes I and 2 demonstrates that each M(11) (M = Mn or Co) ion assumes a distorted octahedral MN4O2 coordination polyhedron. Four nitrogen atoms come from the cyanide groups and the pyridyl rings in a coma-ion plane, and two oxygen atoms come from the H2O molecules in trans-positions. The structures of complexes I and 2 illustrate that aurophilicity and/or hydrogen bonding interactions play important roles in increasing dimensionality. Magnetic investigations oil complexes 1 and 2 show the presence of weak antiferromagnetic interactions. (c) 2005 Elsevier B.V. All rights reserved.