Hydrothermal Synthesis and Structure of a New 3D Lanthanide—Carboxylate Framework,[La(

Hydrothermal Synthesis and Structure of a New 3D Lanthanide—Carboxylate Framework,[La（btec）1／2（H2btec）1／2（H2O）]n（H4btec=1,2,4,5—

Benzeneteracarboxylic acid）

孙道峰;毕文华;曹荣;李星;时茜;洪茂椿

【期刊名称】《中国化学：英文版》 【年(卷),期】2003(021)004 【

摘

要

】

The

title

complex,[La(baec)1/2(H2btec)1/2(H2O)]n(H4btec=1,2,4,5-benzenetetracarboxylic acid)(1)was synthesized by the hydrothermal reaction

of

1,2,4,5-benzenetetracarboxylic

dianhydride

with

La(NO3)3·6H2O in H2O,and crystallizes in the triclinic system,space group

P-1

with

α=0.64403(3)nm,b=0.94500(4)nm,c=0.96380(5)nm,α=88.535(2)°,β=100.314(2)°,γ=76.6470(10)°,V=1.69968(10)nm3,Z=2,and

final

R=0.0274,Rw=0.0735.In1,each La(Ⅲ）ion is coordinated by eight oxygen atoms from six carboxylate groups and one coordinated water molecule.Two different coordinstion modes of H4btec were Present in the structure,one of which contains two protonated carboxylate grougps to balance the charge. 【总页数】4页(405-408)

【关键词】水热合成;镧配合物;结构;1,2,4,5－苯四羧酸