A new polyoxometalate-based complex with alternate ionic layer structures: hydrothermal synthesis, crystal structure and magnetic property

Abstract

A bicapped Keggin anion-supported cobalt–phenanthroline complex [ { Co ( phen ) 2 ( H 2 O ) } 2 PMo 10 VI V 4 IV O 42 ] [ { Co ( phen ) 2 } 2 PMo 8 VI Mo 2 V V 4 IV O 42 ] · 4 H 2 O ( 1) has been hydrothermally synthesized and structurally characterized by elemental analyses, single crystal X-ray diffraction and IR spectrum. Interestingly, all the polyanions constitute an anionic layer, while all the polycations are linked to form a cationic layer by the hydrogen bonding interactions. The result of magnetic measurement for compound 1 shows a typical antiferromagnetic interactions in the 2–300 K temperature range.