Synthesis and structural characterization of new lanthanide coordination polymers with nitrilotriacetic acid

被引：17
作者：
Huang, L
Zhang, LP [1 ]
Jin, LP
机构：
[1] Anyang Teacher Coll, Dept Chem, Anyang 455000, Henan Province, Peoples R China
[2] Beijing Normal Univ, Dept Chem, Beijing 100875, Peoples R China
来源：
JOURNAL OF MOLECULAR STRUCTURE | 2004年 / 692卷 / 1-3期
关键词：
lanthanide; coordination polymer; hydrothermal synthesis; crystal structure; hydrogen bond;
D O I：
10.1016/j.molstruc.2004.01.019
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Reported herein are the hydrothermal synthesis and crystal structures of four lanthanide coordination polymers with nitrilotriacetic acid (H(3)NTA) [Ln(NTA)(H2O)](n) (Ln = La, 1; Pr, 2; Nd, 3; Eu, 4). Despite similar syntheses, compounds I to 4 show transformation in coordination mode of NTA and coordination number of Ln(3+) duo to lanthanide contraction. The Ln(III) ions in 1 and 2 are nine-coordinated and connected through octadentate bridging ligands (NTA) to form a three-dimensional network. The Ln(III) ions in 3 and 4 are eight-coordinated and bridged by heptadentate bridging ligands (NTA) to form an extended two-dimensional layer structure, which further construct a three-dimensional supramolecular structure via coordination bond and three-centered hydrogen bonding between adjacent layers. (C) 2004 Elsevier B.V. All rights reserved.
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收藏
页码：121 / 126
页数：6
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