Hydrothermal syntheses and structures of cobalt(II) and copper(II) coordination polymers with 1-tetrazole-phenyl-4-methylphosphonate ligands uri icon

abstract

  • 2016 Elsevier B.V. Hydrothermal reactions of copper(II) and cobalt(II) salts with 1-tetrazole-phenyl-4-methylphosphonic acid yielded the coordination polymers [Cu(H2O)(HO3PCH2C6H4CN4)]H2O (1H2O) and [Co(H2O)2(HO3PCH2C6H4CN4H)2]2H2O (22H2O). Compound 1H2O is two dimensional and is constructed from chains of trans-corner sharing, 4+2 axially distorted {CuO4N2} octahedra. These chains are linked through the organic tethers of the ligands in the doubly deprotonated form{HO3PCH2C6H4CN4}2to propagate in two-dimensions. In contrast, compound 22H2O is one-dimensional and features {CoO4N2} octahedra linked through pairs of ligands in the singly deprotonated form {HO3PCH2C6H4CN4H}1, i.e. with the tetrazole terminus in the neutral form. The magnetic properties of compound 1H2O reflect the structure where the Cu(II) ions are bridged by syn-syn phosphate and tetrazolate Cu-N-N-Cu bridges, with the former linkage likely to transfer ferromagnetic coupling whereas the latter leads to antiferromagnetic coupling. The two competing pathways lead to negligible overall coupling.

published proceedings

  • INORGANICA CHIMICA ACTA

author list (cited authors)

  • Smith, T. M., Zhang, Y., Gooch, J., Lau, A., McLeish, S., Dunbar, K. R., & Zubieta, J.

citation count

  • 5

complete list of authors

  • Smith, Tiffany M||Zhang, Y-Z||Gooch, Jonathan||Lau, Adam||McLeish, Sharde||Dunbar, Kim R||Zubieta, Jon

publication date

  • March 2017