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Covalent and ionic Cu(II) complexes with cyclam and substituted benzoato ligands: structural, thermal, redox and mesomorphic properties

A covalent mononuclear complex, [Cu(p-HOC6H4COO)2(cyclam)] (1), and two ionic mononuclear complexes, [Cu(cyclam)(H2O)2](p-CH3OC6H4COO)2 (2) and [Cu(cyclam)(H2O)2](p-CH3(CH2)15OC6H4COO)2·H2O (3), were formed from reaction of cyclam with [Cu2(p-HOC6H4COO)4(H2O)2], [Cu2(p-CH3OC6H4COO)4(H2O)2] and [Cu2(...

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Main Authors:	Abdullah, N., Arifin, Z., Tiekink, E.R.T., Sharmin, N., Ahmad Tajidi, N.S., Mat Hussin, S.A.
格式:	Article
出版:	Taylor & Francis 2016
主題:	QD Chemistry
在線閱讀:	http://eprints.um.edu.my/17996/ http://dx.doi.org/10.1080/00958972.2016.1147032
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spelling	my.um.eprints.179962017-10-12T06:56:53Z http://eprints.um.edu.my/17996/ Covalent and ionic Cu(II) complexes with cyclam and substituted benzoato ligands: structural, thermal, redox and mesomorphic properties Abdullah, N. Arifin, Z. Tiekink, E.R.T. Sharmin, N. Ahmad Tajidi, N.S. Mat Hussin, S.A. QD Chemistry A covalent mononuclear complex, [Cu(p-HOC6H4COO)2(cyclam)] (1), and two ionic mononuclear complexes, [Cu(cyclam)(H2O)2](p-CH3OC6H4COO)2 (2) and [Cu(cyclam)(H2O)2](p-CH3(CH2)15OC6H4COO)2·H2O (3), were formed from reaction of cyclam with [Cu2(p-HOC6H4COO)4(H2O)2], [Cu2(p-CH3OC6H4COO)4(H2O)2] and [Cu2(p-CH3(CH2)15OC6H4COO)4(H2O)2], respectively. These complexes were isolated as purple crystals with molecular structures showing distorted octahedral N4O2 geometry. Complexes 1 and 2 were irreversibly reduced to Cu(I) and oxidized to Cu(III), while 3 was redox inactive. Complex 2 reacted with N-(hexadecyl)isonicotinamide (L) to form [Cu(cyclam)(L)2](p-CH3OC6H4COO)2 (4). These complexes were thermally stable (Tdec > 200 °C for 1-3 and 174 °C for 4). Complexes 3 and 4 behaved as ionic liquids (melting temperatures lower than 100 °C) and exhibited mesomorphism. Taylor & Francis 2016 Article PeerReviewed Abdullah, N. and Arifin, Z. and Tiekink, E.R.T. and Sharmin, N. and Ahmad Tajidi, N.S. and Mat Hussin, S.A. (2016) Covalent and ionic Cu(II) complexes with cyclam and substituted benzoato ligands: structural, thermal, redox and mesomorphic properties. Journal of Coordination Chemistry, 69 (5). pp. 862-878. ISSN 0095-8972 http://dx.doi.org/10.1080/00958972.2016.1147032 doi:10.1080/00958972.2016.1147032
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	QD Chemistry
spellingShingle	QD Chemistry Abdullah, N. Arifin, Z. Tiekink, E.R.T. Sharmin, N. Ahmad Tajidi, N.S. Mat Hussin, S.A. Covalent and ionic Cu(II) complexes with cyclam and substituted benzoato ligands: structural, thermal, redox and mesomorphic properties
description	A covalent mononuclear complex, [Cu(p-HOC6H4COO)2(cyclam)] (1), and two ionic mononuclear complexes, [Cu(cyclam)(H2O)2](p-CH3OC6H4COO)2 (2) and [Cu(cyclam)(H2O)2](p-CH3(CH2)15OC6H4COO)2·H2O (3), were formed from reaction of cyclam with [Cu2(p-HOC6H4COO)4(H2O)2], [Cu2(p-CH3OC6H4COO)4(H2O)2] and [Cu2(p-CH3(CH2)15OC6H4COO)4(H2O)2], respectively. These complexes were isolated as purple crystals with molecular structures showing distorted octahedral N4O2 geometry. Complexes 1 and 2 were irreversibly reduced to Cu(I) and oxidized to Cu(III), while 3 was redox inactive. Complex 2 reacted with N-(hexadecyl)isonicotinamide (L) to form [Cu(cyclam)(L)2](p-CH3OC6H4COO)2 (4). These complexes were thermally stable (Tdec > 200 °C for 1-3 and 174 °C for 4). Complexes 3 and 4 behaved as ionic liquids (melting temperatures lower than 100 °C) and exhibited mesomorphism.
format	Article
author	Abdullah, N. Arifin, Z. Tiekink, E.R.T. Sharmin, N. Ahmad Tajidi, N.S. Mat Hussin, S.A.
author_facet	Abdullah, N. Arifin, Z. Tiekink, E.R.T. Sharmin, N. Ahmad Tajidi, N.S. Mat Hussin, S.A.
author_sort	Abdullah, N.
title	Covalent and ionic Cu(II) complexes with cyclam and substituted benzoato ligands: structural, thermal, redox and mesomorphic properties
title_short	Covalent and ionic Cu(II) complexes with cyclam and substituted benzoato ligands: structural, thermal, redox and mesomorphic properties
title_full	Covalent and ionic Cu(II) complexes with cyclam and substituted benzoato ligands: structural, thermal, redox and mesomorphic properties
title_fullStr	Covalent and ionic Cu(II) complexes with cyclam and substituted benzoato ligands: structural, thermal, redox and mesomorphic properties
title_full_unstemmed	Covalent and ionic Cu(II) complexes with cyclam and substituted benzoato ligands: structural, thermal, redox and mesomorphic properties
title_sort	covalent and ionic cu(ii) complexes with cyclam and substituted benzoato ligands: structural, thermal, redox and mesomorphic properties
publisher	Taylor & Francis
publishDate	2016
url	http://eprints.um.edu.my/17996/ http://dx.doi.org/10.1080/00958972.2016.1147032
_version_	1643690580063027200
score	13.251813

Covalent and ionic Cu(II) complexes with cyclam and substituted benzoato ligands: structural, thermal, redox and mesomorphic properties

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