A new heterometalate anion [GdMo_6(CH_3CHOCOO)_6O_15]~(3-) with a nine-coordinate gadolinium encapsualted at the center

摘要

The reaction of an acetonitrile solution of ammonium molybdate with gadolinium chloride in the presence of lactic acid gives rise to the formation of a spherical cluster anion containing six Mo aotms with a Gd(III) encapsulated at the center. [GdmO_6(CH_3CHOCOO)_6O_15]~(3-) 1, which is further linked to a three-dimensional network by ammonium ions via hydrogen bonding. The magnetic properties of the complex have been studied by measuring its magnetic susceptibility at various temperatuares in the 5-300 K range. The results are consistent with room temperature EPR data.