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双（μ(3)-嘧啶-4-羧基-ato）双（μ(2)-嘧啶-4-羧基-ato）四（水合锂）

Bis(μ(3)-pyrimidine-4-carboxyl-ato)bis-(μ(2)-pyrimidine-4-carboxyl-ato)tetra-kis-(aqua-lithium).

作者信息

Starosta Wojciech, Leciejewicz Janusz

机构信息

Institute of Nuclear Chemistry and Technology, ul. Dorodna 16, 03-195 Warszawa, Poland.

出版信息

Acta Crystallogr Sect E Struct Rep Online. 2012 Aug 1;68(Pt 8):m1065-6. doi: 10.1107/S160053681203142X. Epub 2012 Jul 14.

DOI:10.1107/S160053681203142X
PMID:22904735
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3414128/
Abstract

The asymmetric unit of the title compound, [Li(4)(C(5)H(3)N(2)O(2))(4)(H(2)O)(4)], contains two symmetry-independent Li(I) ions, two symmetry-independent ligands and two symmetry-independent coordinated water mol-ecules. They form a dinuclear unit in which the two Li(I) ions are bridged by two carboxyl-ate O atoms from the two ligands. Two dinuclear units related by an inversion centre form the tetra-meric mol-ecule. One of the Li(I) ions shows a distorted tetra-hedral coordination geometry, the other a distorted trigonal-bipyramidal environment. The tetra-mers are held together by hydrogen bonds in which coordinated water mol-ecules act as donors, and the carboxyl-ate O atoms act as acceptors. A hydrogen bond between coordinated water molecule as donor and a ring N atom as acceptor is also observed.

摘要

标题化合物[Li₄(C₅H₃N₂O₂)₄(H₂O)₄]的不对称单元包含两个独立的Li(I)离子、两个独立的配体和两个独立的配位水分子。它们形成一个双核单元，其中两个Li(I)离子由来自两个配体的两个羧酸根O原子桥连。由对称中心相关的两个双核单元形成四聚体分子。其中一个Li(I)离子呈现扭曲的四面体配位几何构型，另一个呈现扭曲的三角双锥环境。四聚体通过氢键结合在一起，其中配位水分子作为供体，羧酸根O原子作为受体。还观察到配位水分子作为供体与环N原子作为受体之间的氢键。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89eb/3414128/08fb70ccecdf/e-68-m1065-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89eb/3414128/5a799c62eb76/e-68-m1065-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89eb/3414128/08fb70ccecdf/e-68-m1065-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89eb/3414128/5a799c62eb76/e-68-m1065-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89eb/3414128/08fb70ccecdf/e-68-m1065-fig2.jpg

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