Abstract

The magnetic susceptibility of seven pyridine carboxylic acid complexes of silver(II) have been measured over the temperature range 300–80°K. All the complexes show Curie or Curie–Weiss behaviour but silver(II) nicotinate (θ= 52°) is believed to be antiferromagnetic. I.r. and electronic spectronic spectral data are also reported and correlated with the structures of the complexes. Silver(II) dipicolinate tetrahydrate (dipicolinic acid = pyridine-2,6-dicarboxylic acid) probably has a pseudo-tetrahedral configuration. The spectral and magnetic properties of related copper(II) and silver(II) complexes with pyridine monocarboxylic acids are compared.

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