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硝酸镧（III）二水合物的晶体结构：二-μ-乙酸根-κ：-双{（乙酸根-κ，'）四水合-[1-（吡啶-2-基亚甲基-κ）-2-（吡啶-2-基-κ）肼-κ]}。

Crystal structure of di-μ-acetato-κ :-bis{(acetato-κ ,')tetra-aqua-[1-(pyridin-2-yl-methylidene-κ)-2-(pyridin-2-yl-κ)hydrazine-κ ]lanthanum(III)} dinitrate hemihydrate.

作者信息

Ndiaye-Gueye Mbossé, Traoré Bocar, Thiam Ibrahima Elhadji, Diouf Ousmane, Wenger Emmanuel, Sall Abdou Salam, Lecomte Claude, Gaye Mohamed

机构信息

Département de Chimie Faculté des Sciences et Techniques Université Cheik Anta Diop Dakar Senegal.

CRM2 Université de Lorraine and CNRS Vandoeuvre Les Nancy France.

出版信息

Acta Crystallogr E Crystallogr Commun. 2025 Jan 1;81(Pt 1):85-89. doi: 10.1107/S2056989024012349.

DOI:10.1107/S2056989024012349
PMID:39776632
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11701776/
Abstract

In the binuclear title complex, La(CHO)(CHN)(HO)·0.5HO, the two lanthanum ions are nine coordinate in a distorted trigonal-prismatic geometry. Each La ion is bonded to three N atoms of the Schiff base, 1-(pyridin-2-yl)-2-(pyridin-2-yl-methyl-ene)hydrazine and is coordinated by one acetate group, which acts in -bidentate mode and two acetate groups that act in -mode between the two La ions. Two -water mol-ecules complete the coordination sphere. All bond lengths in the coordination environment of the La ion are slightly larger than those observed in the isostructural Nd and Sm complexes. The La⋯La distance is 4.6696 (6) Å. In the crystal, extensive O-H⋯O hydrogen-bonding inter-actions involving the coordinated water mol-ecules and the non-coordinating nitrate anions, as well as the oxygen atoms of the acetate groups, generate an overall three-dimensional supra-molecular network.

摘要

在双核标题配合物La(CHO)(CHN)(HO)·0.5HO中，两个镧离子呈扭曲的三角棱柱几何构型，为九配位。每个镧离子与席夫碱1-(吡啶-2-基)-2-(吡啶-2-基亚甲基)肼的三个氮原子键合，并由一个以μ-双齿模式配位的乙酸根基团以及两个在两个镧离子之间以μ-模式配位的乙酸根基团配位。两个μ-水分子完成配位球。镧离子配位环境中的所有键长均略大于在同结构的钕和钐配合物中观察到的键长。La⋯La距离为4.6696 (6) Å。在晶体中，涉及配位水分子、非配位硝酸根阴离子以及乙酸根基团氧原子的广泛的O-H⋯O氢键相互作用形成了一个整体的三维超分子网络。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba9/11701776/308000a033d1/e-81-00085-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba9/11701776/defea01ad9fa/e-81-00085-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba9/11701776/198047d6073d/e-81-00085-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba9/11701776/308000a033d1/e-81-00085-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba9/11701776/defea01ad9fa/e-81-00085-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba9/11701776/198047d6073d/e-81-00085-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba9/11701776/308000a033d1/e-81-00085-fig3.jpg

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