Syntheses, crystal structures and magnetic properties of manganese(ii)-hedp compounds involving alkylenediamine templates (hedp = 1-hydroxyethylidene-diphosphonate)
Abstract
Four new manganese(II) diphosphonates, [NH3(CH2)4NH3][Mn(hedpH2)2] (1) and [NH3(CH2)nNH3][Mn2(hedpH)2]·2H2O [n
= 4 (2), 5 (3), 6 (4)] (hedp = 1-hydroxyethylidenediphosphonate), have been synthesized under hydrothermal conditions and structurally determined by X-ray single crystal diffraction. Compound 1 consists of polymeric Mn(hedpH2)2 single chains built up from vertex-sharing MnO6 octahedra and CPO3 tetrahedra. The chains are cross-linked by very strong hydrogen bonds to form a three-dimensional network with large channels containing
the diammoniumbutane