Structural variability and thermally-induced mesomorphisms in complexes of copper(II) with 4-halobenzoates, 2,2'-bipyridine and 4,4'-bis(dodecyl)-2,2'-bipyridine
Structural variability and thermally-induced mesomorphisms in complexes of copper(II) with 4-halobenzoates, 2,2'-bipyridine and 4,4'-bis(dodecyl)-2,2'-bipyridine
[Cu2(4-XC6H4COO)4(C2H5OH)2] (X = F, Br) reacted with 2,2′-bipyridine (bpy) to form mononuclear complexes [Cu(4-FC6H4COO)2 (bpy)(H2O)] (1) and [Cu(4-BrC6H4COO)2(bpy)(H2O)]·H2O (2), respectively. These complexes formed single crystals. Complex 1 crystallized in the orthorhombic Pccn space group, while 2 crystallized in the triclinic P-1 space group. In addition, [Cu2(4-XC6H4COO)4(C2H5OH)2] (X = F, Cl, Br, I) reacted with 4,4'-bis(dodecyl)-2,2'-bipyridine (L) to form mononuclear complexes [Cu(4-FC6H4COO)2(L)]·H2O (3), [Cu(4-ClC6H4COO)2(L)]·½H2O (4) and [Cu(4-BrC6H4COO)2(L)]·½H2O (5), and a dinuclear complex, [Cu2(4-IC6H4COO)4(L)2] (6), respectively. Complex 3 was a semisolid at room temperature, while 4-6 formed single crystals. Complexes 4 and 5 crystallized in the triclinic P-1 space group, while 6 crystallized in the monoclinic P21/c space group. Complexes 4-6 suffered structural changes on heating to form dinuclear thermotropic metallomesogenic complexes. The electronic effect of halogens and linear alkyl chains were studied towards their molecular structures and mesomorphisms.
2,2'-bipyridine, 4,4'-bis(dodecyl)-2,2'-bipyridine, Copper(II) 4-halobenzoates, crystals, mesomorphisms
1947-1964
Abdullah, Norbani
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Ozair, Lailatun N.
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Samsudin, Habibah
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Tizzard, Graham J.
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Coles, Simon J.
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Mohamadin, Mohammad I
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18 June 2021
Abdullah, Norbani
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Ozair, Lailatun N.
2c29f7ac-2a8a-4ba7-b983-99f64ce0ac47
Samsudin, Habibah
76455090-b620-49f7-aae4-5ea02c8ae28c
Tizzard, Graham J.
8474c0fa-40df-43a6-a662-7f3c4722dbf2
Coles, Simon J.
3116f58b-c30c-48cf-bdd5-397d1c1fecf8
Mohamadin, Mohammad I
7cad083f-2bcb-4362-b18c-39a726a8270c
Abdullah, Norbani, Ozair, Lailatun N., Samsudin, Habibah, Tizzard, Graham J., Coles, Simon J. and Mohamadin, Mohammad I
(2021)
Structural variability and thermally-induced mesomorphisms in complexes of copper(II) with 4-halobenzoates, 2,2'-bipyridine and 4,4'-bis(dodecyl)-2,2'-bipyridine.
Journal of Coordination Chemistry, 74 (12), .
(doi:10.1080/00958972.2021.1940980).
Abstract
[Cu2(4-XC6H4COO)4(C2H5OH)2] (X = F, Br) reacted with 2,2′-bipyridine (bpy) to form mononuclear complexes [Cu(4-FC6H4COO)2 (bpy)(H2O)] (1) and [Cu(4-BrC6H4COO)2(bpy)(H2O)]·H2O (2), respectively. These complexes formed single crystals. Complex 1 crystallized in the orthorhombic Pccn space group, while 2 crystallized in the triclinic P-1 space group. In addition, [Cu2(4-XC6H4COO)4(C2H5OH)2] (X = F, Cl, Br, I) reacted with 4,4'-bis(dodecyl)-2,2'-bipyridine (L) to form mononuclear complexes [Cu(4-FC6H4COO)2(L)]·H2O (3), [Cu(4-ClC6H4COO)2(L)]·½H2O (4) and [Cu(4-BrC6H4COO)2(L)]·½H2O (5), and a dinuclear complex, [Cu2(4-IC6H4COO)4(L)2] (6), respectively. Complex 3 was a semisolid at room temperature, while 4-6 formed single crystals. Complexes 4 and 5 crystallized in the triclinic P-1 space group, while 6 crystallized in the monoclinic P21/c space group. Complexes 4-6 suffered structural changes on heating to form dinuclear thermotropic metallomesogenic complexes. The electronic effect of halogens and linear alkyl chains were studied towards their molecular structures and mesomorphisms.
Text
Structural variability and thermally-induced mesomorphisms in complexes of copper(II) with 4-halobenzoates, 2,2'-bipyridine and 4,4'-bis(dodecyl)-2,2'-bipyridine
- Accepted Manuscript
More information
Accepted/In Press date: 26 May 2021
Published date: 18 June 2021
Additional Information:
Funding Information:
GJT would like to thank the UK Engineering and Physical Sciences Research Council for funding the National Crystallography Service. We thank Prof. D.W. Bruce, York University, UK for the ligand L and helpful suggestions and comments.
Funding Information:
This research was funded by the Malaysia Ministry of Education for High Impact Research Grant (UM.C/625/1/HIR/MOHE/05) and Fundamental Research Grant Scheme (FP031-2013B), and University of Malaya for Postgraduate Research Grants (PG023-2013A and PG083-2014A). GJT would like to thank the UK Engineering and Physical Sciences Research Council for funding the National Crystallography Service. We thank Prof. D.W. Bruce, York University, UK for the ligand L and helpful suggestions and comments.
Publisher Copyright:
© 2021 Informa UK Limited, trading as Taylor & Francis Group.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
Keywords:
2,2'-bipyridine, 4,4'-bis(dodecyl)-2,2'-bipyridine, Copper(II) 4-halobenzoates, crystals, mesomorphisms
Identifiers
Local EPrints ID: 452969
URI: http://eprints.soton.ac.uk/id/eprint/452969
ISSN: 0095-8972
PURE UUID: a13854c9-c822-48c8-a83d-6123ccb94fcc
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Date deposited: 07 Jan 2022 11:59
Last modified: 17 Mar 2024 06:52
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Contributors
Author:
Norbani Abdullah
Author:
Lailatun N. Ozair
Author:
Habibah Samsudin
Author:
Mohammad I Mohamadin
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