Synthesis and Crystal Structure of the Heteroligand Complex Tris(dipivaloylmethanato)(2,2'-bipyridyl)gadolinium(III)[Gd(Thd)_3(Bipy)]

摘要

The synthesis and X-ray diffraction analysis of [Gd(Thd)_3(Bipy)](HThd is dipivaloyl,and Bipy is 2,2'-bipyridyl)are performed.The crystals are triclinic,a = 11.095(5)A,b = 12.263(3)A,c = 18.357(4)A,alpha = 79.43(2)deg,beta = 85.24(3)deg,gamma = 68.79(3)deg,V= 2288.5(13)A~3,Z= 2,space group P1,and R = 0.0364 against 9125 reflections with I > 2sigma(I).The Gd atom is bonded with six oxygen atoms of three dipivaloylmethanate ligands(with average Gd-O distance 2.343(3)A)and two nitrogen atoms of the bipyridyl molecule(with average Gd-N distance 2.618(4)A)at vertices of a distorted square antiprism.The stacking interaction is observed between the bipyridyl molecules linked by the inversion center of the complexes(the distance between the parallel Bipy planes is 3.45 A).