Issue 22, 2000

Syntheses, structures and magnetic properties of three-dimensional co-ordination polymers constructed by dimer subunits

Abstract

The crystal structures and magnetic properties of compounds [MII(apo)(N(CN)2)2], where M = Co (1), Ni (2) or Mn (3), apo = 2-aminopyridine N-oxide, have been determined. The structural analyses revealed that they are isomorphous, and all belong to monoclinic space group P21/n. The metal(II) ions display distorted octahedral co-ordination, with four terminal N atoms of different [N(CN)2] ligands and two O atoms of different apo ligands. Two ions are bridged by two μ-O atoms to form a dimer subunit. Those dimers are further linked to each other by [N(CN)2] resulting in a three-dimensional structure. The magnetic properties of the compounds were investigated in the temperature range 2–300 K for 1 and 2 and 4–300 K for 3. The values for the intradimer spin coupling constant J were estimated to be −17.8, −40, −1.3 cm−1 for 13, respectively, indicative of antiferromagnetic interaction.

Supplementary files

Article information

Article type
Paper
Submitted
12 Jul 2000
Accepted
06 Sep 2000
First published
19 Oct 2000

J. Chem. Soc., Dalton Trans., 2000, 4187-4191

Syntheses, structures and magnetic properties of three-dimensional co-ordination polymers constructed by dimer subunits

B. Sun, S. Gao, B. Ma, D. Niu and Z. Wang, J. Chem. Soc., Dalton Trans., 2000, 4187 DOI: 10.1039/B005612J

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