Abdullah, Norbani and Ozair, Lailatun N. and Samsudin, Habibah and Tizzard, Graham J. and Coles, Simon J. and Mohamadin, Mohammad (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). pp. 1947-1964. ISSN 0095-8972, DOI https://doi.org/10.1080/00958972.2021.1940980.
Full text not available from this repository.Abstract
Cu-2(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)]center dot 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, Cu-2(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)]center dot H2O (3), Cu(4-ClC6H4COO)(2)(L)]center dot 1/2H(2)O (4) and Cu(4-BrC6H4COO)(2)(L)]center dot 1/2H(2)O (5), and a dinuclear complex, Cu-2(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 P2(1)/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.
| Item Type: | Article |
|---|---|
| Funders: | Malaysia Ministry of Education for High Impact Research Grant (UM.C/625/1/HIR/MOHE/05), Fundamental Research Grant Scheme (FP031-2013B), Universiti Malaya (PG023-2013A), Universiti Malaya (PG083-2014A) |
| Uncontrolled Keywords: | Copper(II) 4-halobenzoates; 2; 2'-bipyridine; 4; 4'-bis(dodecyl)-2; 2'-bipyridine; crystals; Mesomorphisms |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Department of Chemistry |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 15 Aug 2022 06:09 |
| Last Modified: | 15 Aug 2022 06:09 |
| URI: | http://eprints.um.edu.my/id/eprint/28502 |
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