Coordination properties of axially unfixed chiral dipyridine ligands towards metal and ammonium ions

Kiu-Chor Sham; Chi-Sing Lee; Ka-Yee Chan; Shek-Man Yiu; Wing-Tak Wong; Hoi-Lun Kwong

doi:10.1016/j.poly.2011.01.017

Author(s)

Kiu-Chor Sham
Chi-Sing Lee
Ka-Yee Chan
Shek-Man Yiu
Wing-Tak Wong

Detail(s)

Original language	English
Pages (from-to)	1149-1156
Journal / Publication	Polyhedron
Volume	30
Issue number	6
Publication status	Published - 13 Apr 2011

Link(s)

DOI	DOI https://doi.org/10.1016/j.poly.2011.01.017 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-79953206568&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(177f211b-2ea8-4a98-aae3-9cb47df4c194).html

Abstract

New chiral dipyridine ligands with an axially unfixed 1,1′-biphenyl bridge were prepared via homocoupling of bromophenyl pyridines. The conformeric ratios of the free ligands in solution and their coordination properties towards metal ions were studied by NMR spectroscopy. X-Ray crystallography of the silver(I) and copper(I) complexes showed 1:1 metal to ligand complexes and S planar chirality. Interestingly, the biphenyl ligands show a 1:2 stepwise binding towards most ammonium ions tested with strong fluorescence enhancement, but a selectively 1:1 binding towards l-ornithine methyl ester hydrochloride with no fluorescence enhancement. © 2011 Elsevier Ltd. All rights reserved.

Research Area(s)

Ammonium ions binding, Chiral ligand, Copper complex, Dipyridine ligand, Metal binding, Silver complex

Citation Format(s)

[ RIS ] [ BibTeX ]

Coordination properties of axially unfixed chiral dipyridine ligands towards metal and ammonium ions. / Sham, Kiu-Chor; Lee, Chi-Sing; Chan, Ka-Yee et al.
In: Polyhedron, Vol. 30, No. 6, 13.04.2011, p. 1149-1156.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Sham, K-C, Lee, C-S, Chan, K-Y, Yiu, S-M, Wong, W-T & Kwong, H-L 2011, 'Coordination properties of axially unfixed chiral dipyridine ligands towards metal and ammonium ions', Polyhedron, vol. 30, no. 6, pp. 1149-1156. https://doi.org/10.1016/j.poly.2011.01.017

Sham, K.-C., Lee, C.-S., Chan, K.-Y., Yiu, S.-M., Wong, W.-T., & Kwong, H.-L. (2011). Coordination properties of axially unfixed chiral dipyridine ligands towards metal and ammonium ions. Polyhedron, 30(6), 1149-1156. https://doi.org/10.1016/j.poly.2011.01.017

Sham KC, Lee CS, Chan KY, Yiu SM, Wong WT, Kwong HL. Coordination properties of axially unfixed chiral dipyridine ligands towards metal and ammonium ions. Polyhedron. 2011 Apr 13;30(6):1149-1156. doi: 10.1016/j.poly.2011.01.017

Sham, Kiu-Chor ; Lee, Chi-Sing ; Chan, Ka-Yee et al. / Coordination properties of axially unfixed chiral dipyridine ligands towards metal and ammonium ions. In: Polyhedron. 2011 ; Vol. 30, No. 6. pp. 1149-1156.