SYNTHESIS AND STRUCTURE DETERMINATION OF NEODYMIUM COMPLEXES WITH CYCLOHEXANECARBOXYLIC ACID

摘要

Two complexes,NdL3·2C2H5OH and NdL3·2H2O where L=cyclohexane-carboxylate anion,weresynthesized and the structure of the former was determined by the single-crystal X-ray diffration method.The crystal is triclinic,Pspace group with the cell parameters:a=1.2385（6）,b=1.2385（6）,c=0.9421（5）nm.α=91.69（4）°,β=98.49（4）°,γ=99.16（5）°,Z=2,V=1.436 nm3.The structure was refined to Rvalue of 0.0866.Each Nd atom is connected with other two Nd atoms by two bidentate and two tridentatecarboxyl groups to form a linear polymer.The Nd atom is further coordinated by a chelating carboxyl andtwo ethanol molecules.So the central atom is nine-coordinated with a distorted monocappedsquare-antiprism geometry.The infrared spectra and the thermal analysis of the complexes were alsostudied.