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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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Formato: | Texto |
Lenguaje: | English |
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International Union of Crystallography
2010
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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. |
format | Text |
id | pubmed-3050186 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2010 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
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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