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Crystal structures of two nickel compounds comprising neutral Ni(II) hydrazone complexes and di­carb­oxy­lic acids

Two isostructural Ni(II) compounds, bis­{N-[1-(pyridin-2-yl-κN)eth­ylidene]pyridine-4-carbohydrazonato-κ(2) N′,O}nickel(II)–2,5-di­chloro­terephthalic acid (1/1), [Ni(C(13)H(11)N(4)O)(2)](C(8)H(4)Cl(2)O(4)), and bis­{N-[1-(pyridin-2-yl-κN)eth­ylidene]pyridine-4-carbohydrazonato-κ(2) N′,O}nickel(II)–...

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Autores principales: Nakanishi, Takumi, Sato, Osamu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5290543/
https://www.ncbi.nlm.nih.gov/pubmed/28217320
http://dx.doi.org/10.1107/S2056989016020326
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author Nakanishi, Takumi
Sato, Osamu
author_facet Nakanishi, Takumi
Sato, Osamu
author_sort Nakanishi, Takumi
collection PubMed
description Two isostructural Ni(II) compounds, bis­{N-[1-(pyridin-2-yl-κN)eth­ylidene]pyridine-4-carbohydrazonato-κ(2) N′,O}nickel(II)–2,5-di­chloro­terephthalic acid (1/1), [Ni(C(13)H(11)N(4)O)(2)](C(8)H(4)Cl(2)O(4)), and bis­{N-[1-(pyridin-2-yl-κN)eth­ylidene]pyridine-4-carbohydrazonato-κ(2) N′,O}nickel(II)–2,5-di­bromo­terephthalic acid (1/1), [Ni(C(13)H(11)N(4)O)(2)](C(8)H(4)Br(2)O(4)), were synthesized and their crystal structures determined. The pair of N,N′,O-tridentate N-[1-(pyridin-2-yl-κN)eth­yl]pyridine-4-carbohydrazonate L ligands result in a cis-NiO(2)N(4) octa­hedral coordination sphere for the metal ions. The asymmetric units consist of two half-mol­ecules of the di­carb­oxy­lic acids, which are completed by crystallographic inversion symmetry. In the respective crystals, the 2,5-di­chloro­terephthalic acid (H(2)Cl(2)TPA, 1-Cl) mol­ecules form zigzag hydrogen-bonded chains with the [Ni(L)(2)] mol­ecules, with the hydrogen-bond distances in 1-Br slightly longer than those in 1-Cl. The packing is consolidated by aromatic π–π stacking between the di­carb­oxy­lic acid mol­ecules and terminal pyridine rings in [Ni(L)(2)] and short halogen–halogen inter­actions are also observed. The qualitative prediction of the H-atom position from the C—N—C angles of the terminal pyridine rings in L and the C—O distances in the carboxyl groups show that 1-Cl and 1-Br are co-crystals rather than salts.
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spelling pubmed-52905432017-02-17 Crystal structures of two nickel compounds comprising neutral Ni(II) hydrazone complexes and di­carb­oxy­lic acids Nakanishi, Takumi Sato, Osamu Acta Crystallogr E Crystallogr Commun Research Communications Two isostructural Ni(II) compounds, bis­{N-[1-(pyridin-2-yl-κN)eth­ylidene]pyridine-4-carbohydrazonato-κ(2) N′,O}nickel(II)–2,5-di­chloro­terephthalic acid (1/1), [Ni(C(13)H(11)N(4)O)(2)](C(8)H(4)Cl(2)O(4)), and bis­{N-[1-(pyridin-2-yl-κN)eth­ylidene]pyridine-4-carbohydrazonato-κ(2) N′,O}nickel(II)–2,5-di­bromo­terephthalic acid (1/1), [Ni(C(13)H(11)N(4)O)(2)](C(8)H(4)Br(2)O(4)), were synthesized and their crystal structures determined. The pair of N,N′,O-tridentate N-[1-(pyridin-2-yl-κN)eth­yl]pyridine-4-carbohydrazonate L ligands result in a cis-NiO(2)N(4) octa­hedral coordination sphere for the metal ions. The asymmetric units consist of two half-mol­ecules of the di­carb­oxy­lic acids, which are completed by crystallographic inversion symmetry. In the respective crystals, the 2,5-di­chloro­terephthalic acid (H(2)Cl(2)TPA, 1-Cl) mol­ecules form zigzag hydrogen-bonded chains with the [Ni(L)(2)] mol­ecules, with the hydrogen-bond distances in 1-Br slightly longer than those in 1-Cl. The packing is consolidated by aromatic π–π stacking between the di­carb­oxy­lic acid mol­ecules and terminal pyridine rings in [Ni(L)(2)] and short halogen–halogen inter­actions are also observed. The qualitative prediction of the H-atom position from the C—N—C angles of the terminal pyridine rings in L and the C—O distances in the carboxyl groups show that 1-Cl and 1-Br are co-crystals rather than salts. International Union of Crystallography 2017-01-06 /pmc/articles/PMC5290543/ /pubmed/28217320 http://dx.doi.org/10.1107/S2056989016020326 Text en © Nakanishi and Sato 2017 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.http://creativecommons.org/licenses/by/2.0/uk/
spellingShingle Research Communications
Nakanishi, Takumi
Sato, Osamu
Crystal structures of two nickel compounds comprising neutral Ni(II) hydrazone complexes and di­carb­oxy­lic acids
title Crystal structures of two nickel compounds comprising neutral Ni(II) hydrazone complexes and di­carb­oxy­lic acids
title_full Crystal structures of two nickel compounds comprising neutral Ni(II) hydrazone complexes and di­carb­oxy­lic acids
title_fullStr Crystal structures of two nickel compounds comprising neutral Ni(II) hydrazone complexes and di­carb­oxy­lic acids
title_full_unstemmed Crystal structures of two nickel compounds comprising neutral Ni(II) hydrazone complexes and di­carb­oxy­lic acids
title_short Crystal structures of two nickel compounds comprising neutral Ni(II) hydrazone complexes and di­carb­oxy­lic acids
title_sort crystal structures of two nickel compounds comprising neutral ni(ii) hydrazone complexes and di­carb­oxy­lic acids
topic Research Communications
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5290543/
https://www.ncbi.nlm.nih.gov/pubmed/28217320
http://dx.doi.org/10.1107/S2056989016020326
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