A new β-diketone compound,1-(p- methyl -phenyl)-3- methyl-4-(α-furoyl) pyrazolone-5(HL) and its three rare earth complexes have been synthesized. On the basis of the elemental analysis and molar conductance results,the general formula of the complexes, [REL_3(HL)]H_2O (RE=Nd,Sm,Gd)were given. They were also studied on the coordinating structure, thermal stability and general properties by means of IR, UV-visibleTG-DTA. The coordinating atom were O atom of the enol form and O atom of the carbonyl group. Coordinational numbers of rare earth ions were 8. Molar conductance data showed that they were all non electrolytes. Decomposition temperature of ligand was 206.5,which of complexes were 225approximately, their thermal stability was enhanced.
Chemistry and Adhesion
rare earth complex