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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 45, Number 6
JKCSEZ 45(6)
December 20, 2001 

 
Title
Two-Dimensional Lanthanum-BDC Coordination Polymer: Hydrothermal Synthesis and Structure of [La4 (BDC)6 (H2 O)5 ](H2 O) (BDC=benzene-1,3-dicaboxylate)

2차원 La-BDC 배위 고분자:[La4 (BDC)6 (H2 O)5 ](H2 O)의 수열합성 및 구조 (BDC=benzene-1,3-dicaboxylate)
Author
Hye Jin Kim, Dongwon Min, Hyun Sue Hoe, Soon W. Lee

김혜진, 민동원, 허현수, 이순원
Keywords
Abstract
1,2-Bis(4-pyridyl)ethane 존재 하에서, La(NO3)3·6H2O와 benzene-1,3-dicarboxylic acid(H2BDC)가 수열반응하여 〔La4(BDC)6(H2O)5〕(H2O) (1) 실험식을 갖는 2차원 lanthanum-BDC 배위 고분자가 합성되었다. 화합물의 1의 구조 분석 결과, 이 고분자는 분명히 구별되는 4개의 La금속들을 함유하고 있었다. 3개의 La금속들은 7-배위를 하고 있으며, 이들은 "모자 씌운(capped)"삼각 프리즘, "모자 씌운" 정팔면체, 그리고 오각쌍뿔등의 다른 구조들을 가지고 있다. 나머지 La금속은 8-배위, 사각 반프리즘 (antiprismatic)구조를 가지고 있다.

The hydrothermal reaction between lanthanum(Ⅲ) nitrate (La(NO3)3·6H2O) and benzene-1,3-dicarboxylic acid (H2BDC) in the presence of 1,2-bis(4-pyridyl)ethane gave a 2-D lanthnum-BDC coordination polymer with an empirical formula of [La4(BDC)6(H2O)5](H2O) (1). X-ray structure analysis of compound 1 revealed that this polymer contains four distinct La metals. The three La metals are 7-coordinate with three different structures: a capped trigonal prism, a capped octahedron, and a pentagonal bipyramid. The remaining La metal has a 8-coordinate, square antiprismatic structure.

Page
507 - 512
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