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trans-Bis(N,N-diethyl­ethylenediamine)­nickel(II) dibromide

The structure of the title compound, [Ni(C(6)H(16)N(2))(2)]Br(2) or [Ni(Et(2)en)(2)]Br(2) (Et(2)en is asymmetric N,N-diethyl­ethylene­diamine), containing an Ni(II) atom (site symmetry [Image: see text]) in square-planar NiN(4) coordination, is described and contrasted with related structures contai...

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Autores principales: Ferrara, Skylar J., Mague, Joel T., Donahue, James P.
Formato: Texto
Lenguaje:English
Publicado: International Union of Crystallography 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3050186/
https://www.ncbi.nlm.nih.gov/pubmed/21522568
http://dx.doi.org/10.1107/S1600536810050403
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author Ferrara, Skylar J.
Mague, Joel T.
Donahue, James P.
author_facet Ferrara, Skylar J.
Mague, Joel T.
Donahue, James P.
author_sort Ferrara, Skylar J.
collection PubMed
description The structure of the title compound, [Ni(C(6)H(16)N(2))(2)]Br(2) or [Ni(Et(2)en)(2)]Br(2) (Et(2)en is asymmetric N,N-diethyl­ethylene­diamine), containing an Ni(II) atom (site symmetry [Image: see text]) in square-planar NiN(4) coordination, is described and contrasted with related structures containing Ni(II) in octa­hedral coordination with axial X (−) ligands (X (−) = variable anions). The dialkyl­ated N atom has an appreciably longer bond length to the Ni(II) atom [1.9666 (13) Å] than does the unsubstituted N atom [1.9202 (14) Å]. The Ni—N bond lengths in [Ni(Et(2)en)(2)]Br(2) are significantly shorter than corresponding values in tetra­gonally distorted [Ni(Et(2)en)(2) X (2)] compounds (X = (−)O(2)CCF(3), OH(2), or (−)NCS), which have a triplet ground state. The electronic configuration in these axially ligated [Ni(Et(2)en)(2) X (2)] compounds populates the metal-based d (x) (2) (-y) (2) orbital, which is Ni—N anti­bonding in character. Each Et(2)en ligand in each [Ni(Et(2)en)(2)](2+) cation forms a pair of N—H⋯Br hydrogen bonds to the Br(−) anions, one above and below the NiN(4) square plane. Thus, a ribbon of alternating Br(−) pairs and [Ni(Et(2)en)(2)](2+) cations that are canted at 65° relative to one another is formed by hydrogen bonds.
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spelling pubmed-30501862011-04-26 trans-Bis(N,N-diethyl­ethylenediamine)­nickel(II) dibromide Ferrara, Skylar J. Mague, Joel T. Donahue, James P. Acta Crystallogr Sect E Struct Rep Online Metal-Organic Papers The structure of the title compound, [Ni(C(6)H(16)N(2))(2)]Br(2) or [Ni(Et(2)en)(2)]Br(2) (Et(2)en is asymmetric N,N-diethyl­ethylene­diamine), containing an Ni(II) atom (site symmetry [Image: see text]) in square-planar NiN(4) coordination, is described and contrasted with related structures containing Ni(II) in octa­hedral coordination with axial X (−) ligands (X (−) = variable anions). The dialkyl­ated N atom has an appreciably longer bond length to the Ni(II) atom [1.9666 (13) Å] than does the unsubstituted N atom [1.9202 (14) Å]. The Ni—N bond lengths in [Ni(Et(2)en)(2)]Br(2) are significantly shorter than corresponding values in tetra­gonally distorted [Ni(Et(2)en)(2) X (2)] compounds (X = (−)O(2)CCF(3), OH(2), or (−)NCS), which have a triplet ground state. The electronic configuration in these axially ligated [Ni(Et(2)en)(2) X (2)] compounds populates the metal-based d (x) (2) (-y) (2) orbital, which is Ni—N anti­bonding in character. Each Et(2)en ligand in each [Ni(Et(2)en)(2)](2+) cation forms a pair of N—H⋯Br hydrogen bonds to the Br(−) anions, one above and below the NiN(4) square plane. Thus, a ribbon of alternating Br(−) pairs and [Ni(Et(2)en)(2)](2+) cations that are canted at 65° relative to one another is formed by hydrogen bonds. International Union of Crystallography 2010-12-08 /pmc/articles/PMC3050186/ /pubmed/21522568 http://dx.doi.org/10.1107/S1600536810050403 Text en © Ferrara et al. 2011 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Metal-Organic Papers
Ferrara, Skylar J.
Mague, Joel T.
Donahue, James P.
trans-Bis(N,N-diethyl­ethylenediamine)­nickel(II) dibromide
title trans-Bis(N,N-diethyl­ethylenediamine)­nickel(II) dibromide
title_full trans-Bis(N,N-diethyl­ethylenediamine)­nickel(II) dibromide
title_fullStr trans-Bis(N,N-diethyl­ethylenediamine)­nickel(II) dibromide
title_full_unstemmed trans-Bis(N,N-diethyl­ethylenediamine)­nickel(II) dibromide
title_short trans-Bis(N,N-diethyl­ethylenediamine)­nickel(II) dibromide
title_sort trans-bis(n,n-diethyl­ethylenediamine)­nickel(ii) dibromide
topic Metal-Organic Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3050186/
https://www.ncbi.nlm.nih.gov/pubmed/21522568
http://dx.doi.org/10.1107/S1600536810050403
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