| Summary: | 2,4 - Dimethoxybenzoates of Mn(II), Co(II) and Cu(II) have been synthesized
as hydrated or anyhydrous polycrystalline solids and characterized by elemental analysis,
IR spectroscopy, magnetic studies and X-ray diffraction measurements. They possess
the following colours: Mn(II) – white, Co(II) – pink and Cu(II) – blue. The carboxylate
groups bind as monodentate, or a symmetrical bidentate bridging ligands and tridentate.
The thermal stabilities were determined in air at 293-1173K. When heated the hydrated
complexes dehydrate to from anhydous salts which are decomposed to the oxides of
respective metals. The magnetic susceptibilites of the 2,4-dimethoxybenzoates were
measured over the range 76-303 K and their magnetic moments were calculated. The
results reveal the complexes of Mn(II), Co(II) to be high-spin complexes and that of
Cu(II) to form dimer.
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