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μ-方酸根-κO:O-双-{[2-(2-氨基乙基)吡啶-κN,N']水合镍(II)}方酸盐0.25水合物

μ-Squarato-κO:O-bis-{[2-(2-amino-ethyl)pyridine-κN,N']aqua-nickel(II)} squarate 0.25-hydrate.

作者信息

Bekdemir Yunus, Uçar Ibrahim, Büyükgüngör Orhan

出版信息

Acta Crystallogr Sect E Struct Rep Online. 2008 Sep 27;64(Pt 10):m1344-5. doi: 10.1107/S1600536808030808.

DOI:10.1107/S1600536808030808
PMID:21201075
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2959298/
Abstract

The asymmetric unit of title compound, [Ni(2)(C(4)O(4))(C(7)H(10)N(2))(4)(H(2)O)(2)]C(4)O(4)·0.25H(2)O, contains one-half of a squarate ligand, one-half of an uncoordinated squarate dianion, two 2-(2-amino-ethyl)pyridine ligands and one aqua ligand, all coordinated to an Ni(II) ion. The compound also contains 0.25 solvent water mol-ecules. The Ni(II) ion has distorted octa-hedral geometry. The squarate ligand adopts a μ-1,2 coordination mode, the intra-dimer Ni(II)⋯Ni(II) separation being 7.1442 (7) Å, while the other squarate unit acts as a counter-anion. The crystal structure is stabilized by inter-molecular O-H⋯O and N-H⋯O hydrogen-bond inter-actions, forming a three-dimensional network.

摘要

标题化合物[Ni₂(C₄O₄)(C₇H₁₀N₂)₄(H₂O)₂]C₄O₄·0.25H₂O的不对称单元包含半个方酸配体、半个未配位的方酸二价阴离子、两个2-(2-氨基乙基)吡啶配体和一个水合配体，它们均与一个Ni(II)离子配位。该化合物还含有0.25个溶剂水分子。Ni(II)离子具有畸变的八面体几何构型。方酸配体采用μ-1,2配位模式，二聚体内Ni(II)⋯Ni(II)间距为7.1442 (7) Å，而另一个方酸单元作为抗衡阴离子。晶体结构通过分子间O-H⋯O和N-H⋯O氢键相互作用得以稳定，形成三维网络。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4264/2959298/c5aea5549427/e-64-m1344-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4264/2959298/5b03d29e82d2/e-64-m1344-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4264/2959298/c5aea5549427/e-64-m1344-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4264/2959298/5b03d29e82d2/e-64-m1344-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4264/2959298/c5aea5549427/e-64-m1344-fig2.jpg

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