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Mononuclear Cu(II) complexes of novel salicylidene Schiff bases: synthesis and mesogenic properties

Cretu, Carmen; Cseh, Liliana; Tang, Bai J.; Sasca, Viorel; Badea, Valentin; Szerb, Elisabeta I.; Mehl, Georg; Shova, Sergiu; Costisor, Otilia

Authors

Carmen Cretu

Liliana Cseh

Bai J. Tang

Viorel Sasca

Valentin Badea

Elisabeta I. Szerb

Sergiu Shova

Otilia Costisor



Abstract

Two new Schiff base ligands 1 and 2 (where 1 = 4-(2-hydroxybenzilidenamino)-phenyl-4-(decyloxy)-2-(pent-4-enyloxy)benzoate, 2 = 4-(4-(decyloxy)-2-hydroxybenziliden amino)-phenyl-4-(decyloxy)-2-(pent-4-enyloxy)benzoate) and their copper (Cu)(II) complexes have been synthesised and characterised. The derivatives were fully characterised structurally, and their mesomorphic behaviour was investigated by polarised optical microscopyand differential scanning calorimetry. The structure of Cu(II) complex having 1 as ligand (3) was determined by X-ray diffraction. The Schiff base ligands exhibit enantiotropic nematic phases, the Cu(II) complex 4 shows monotropic nematic phase behaviour, while compound 3 does not show mesomorphism.

Citation

Cretu, C., Cseh, L., Tang, B. J., Sasca, V., Badea, V., Szerb, E. I., …Costisor, O. (2015). Mononuclear Cu(II) complexes of novel salicylidene Schiff bases: synthesis and mesogenic properties. Liquid crystals, 42(8), 1139-1147. https://doi.org/10.1080/02678292.2015.1028491

Journal Article Type Article
Acceptance Date Mar 9, 2015
Online Publication Date Jun 25, 2015
Publication Date Aug 3, 2015
Deposit Date Sep 2, 2015
Publicly Available Date Nov 23, 2017
Journal Liquid crystals
Print ISSN 0267-8292
Electronic ISSN 1366-5855
Publisher Taylor & Francis
Peer Reviewed Peer Reviewed
Volume 42
Issue 8
Pages 1139-1147
DOI https://doi.org/10.1080/02678292.2015.1028491
Keywords Schiff base, Liquid crystals, Metallomesogens, X-ray diffraction, Nematic phase
Public URL https://hull-repository.worktribe.com/output/378630
Publisher URL http://www.tandfonline.com/doi/full/10.1080/02678292.2015.1028491
Copyright Statement ©2015 University of Hull
Additional Information This is an Accepted Manuscript of an article published by Taylor & Francis in Liquid crystals on 25 June 2015, available online: http://wwww.tandfonline.com/10.1080/02678292.2015.1028491.

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