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Synthesis, structures, and spectroscopic properties of Hg(II) complexes of bidentate NN and tridentate NNO Schiff-base ligands


Basu Baul, Tushar S; Kundu, Sajal; Höpfl, Herbert; Tiekink, Edward R T; Linden, Anthony (2014). Synthesis, structures, and spectroscopic properties of Hg(II) complexes of bidentate NN and tridentate NNO Schiff-base ligands. Journal of Coordination Chemistry, 67(6):1061-1078.

Abstract

Reactions of HgX2 (X = Cl, N3, NO3) with (E)-2-methoxy-N-(pyridin-2-ylmethylene)aniline (L1) and (E)-4-methoxy-N-(pyridin-2-ylmethylene)aniline (L2) in ethanol gave two monomers, [HgL1(Cl)2] (1) and [HgL2(NO3)2(DMSO)] (5), and three coordination polymers, {[HgL1(N3)2]2·Hg(N3)2}n (2), [HgL2(Cl)2]n (3), and [HgL2(NO3)2]n·nCH3CN (4). Compounds 1–5 were characterized by elemental analysis, IR, NMR spectroscopy, and single-crystal X-ray diffraction. The common feature of monomeric 1 and 5 is the presence of intra- and intermolecular Hg–O bonds. In the absence of these, polymeric structures arise as a result of azide, chloride, and nitrate bridging in 2, 3, and 4, respectively. Fluorescent properties of 1–5 were also investigated.

Abstract

Reactions of HgX2 (X = Cl, N3, NO3) with (E)-2-methoxy-N-(pyridin-2-ylmethylene)aniline (L1) and (E)-4-methoxy-N-(pyridin-2-ylmethylene)aniline (L2) in ethanol gave two monomers, [HgL1(Cl)2] (1) and [HgL2(NO3)2(DMSO)] (5), and three coordination polymers, {[HgL1(N3)2]2·Hg(N3)2}n (2), [HgL2(Cl)2]n (3), and [HgL2(NO3)2]n·nCH3CN (4). Compounds 1–5 were characterized by elemental analysis, IR, NMR spectroscopy, and single-crystal X-ray diffraction. The common feature of monomeric 1 and 5 is the presence of intra- and intermolecular Hg–O bonds. In the absence of these, polymeric structures arise as a result of azide, chloride, and nitrate bridging in 2, 3, and 4, respectively. Fluorescent properties of 1–5 were also investigated.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Uncontrolled Keywords:Synthesis Mercury(II) compounds N,N-donor ligands Photophysical properties Crystal structures
Language:English
Date:2014
Deposited On:16 May 2014 15:38
Last Modified:18 Apr 2018 11:44
Publisher:Taylor & Francis
ISSN:0095-8972
Funders:University Grants Commission, New Delhi, India (F. No. 42- 396/2013 (SR), Indo-Swiss Joint Research Programme, Joint Utilisation of Advanced Facilities [grant number JUAF 11], Ministry of Higher Education, Malaysia, University of Malaya, High Impact Research grant [UM.C/HIR-MOHE/SC/03]
Additional Information:This is an Author's Accepted Manuscript of an article published in Journal of Coordination Chemistry, 67(6): 1061-1078. 2014 copyright Taylor & Francis, available online at: http://www.tandfonline.com/10.1080/00958972.2014.901508.
OA Status:Green
Publisher DOI:https://doi.org/10.1080/00958972.2014.901508

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