Synthesis and characterization of vanadium(III) and vanadium(IV) polymers containing 3,5-pyrazoledicarboxylato |
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| Abstract: | Three vanadium polymers V2(µ-OH)2(H2O)2(Hpdc)2] n (1), {Na2(µ-H2O)2]V2O2(pdc)2]} n (2) and {K2(µ-H2O)]V2O2(pdc)2]} n (3) (H3pdc?=?3,5-pyrazoledicarboxylate acid) have been hydrothermally synthesized and characterized by spectroscopic methods, magnetic susceptibility measurements and X-ray crystallography. The structure of 1 consists of infinite double-stranded chains. Both 2 and 3 are 3D coordination polymers, featuring ladder-like moieties, made up of V2O2(pdc)2] subunits, interconnected by pairs of alkali ion chains. Variable-temperature magnetic behavior reveals the existence of antiferromagnetic interactions in 1 and dominant ferromagnetic interactions in 2 and 3. |
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| Keywords: | Vanadium Polymer Synthesis Characterization Magnetism |
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