Synthesis, characterization and spectroscopic studies of cyclometalated platinum(II) complexes containing meta-bis(2-pyridoxy)benzene

Brenda Ka-Wen Chiu; Michael Hon-Wah Lam; Derek Yiu-Kin Lee; Wai-Yeung Wong

doi:10.1016/j.jorganchem.2004.06.006

Author(s)

Brenda Ka-Wen Chiu
Michael Hon-Wah Lam
Derek Yiu-Kin Lee
Wai-Yeung Wong

Detail(s)

Original language	English
Pages (from-to)	2888-2899
Journal / Publication	Journal of Organometallic Chemistry
Volume	689
Issue number	18
Online published	19 Jul 2004
Publication status	Published - 15 Sep 2004

Link(s)

DOI	DOI https://doi.org/10.1016/j.jorganchem.2004.06.006 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-4344584577&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(fd0ac74d-c3d1-44e4-b2e2-b0cf5a6599f9).html

Abstract

A series of mononuclear and binuclear cyclometalated platinum(II) complexes containing new terdentate meta-bis(2-pyridoxy)benzene ligands: 3,5-bis(2-pyridoxy)toluene (L₁H) and 3,5-bis(2-pyridoxy)-2-dodecylbenzene (L₂H): [Pt(L₁)Cl] (1), [Pt(L₂)Cl] (2), [Pt(L₁) (CH₃CN)](ClO₄) (3), {[Pt(L₁)]₂(μ-dppm)}(ClO₄)₂ (4), {[Pt(L₂)]₂(μ-dppm)} (ClO₄)₂ (5), {[Pt(L₁)]₂(μ-pyrazole)}(ClO₄) (6), {[Pt(L₂)]₂(μ-pyrazole)}(ClO₄) (7), {[Pt(L₁)]₂(μ-imidazole)}(ClO₄) (8) and {[Pt(L₂)]₂(μ-imidazole)} (ClO₄) (9), have been synthesized and characterized. These ligands are coordinated to platinum(II) in a "pincer"-like manner and the presence of pyridyl donors enhances the availability of the ligand π* orbitals for electronic transition. Spectroscopic properties of these cyclometalated complexes were studied. While the non-coplanar nature of the ligands hinders ligand-ligand and metal-metal interactions in these cyclometalated complexes, the presence of long hydrocarbon side chain on ligand L₂H seems to alleviate such hindrance. Intermolecular π–π, and possibly Pt-Pt interactions were observed in complex 2 at high concentration.

Research Area(s)

Cyclometalated complexes, meta-Bis(2-pyridoxy)benzene, Pincer ligands, Platinum(II) complexes, Pt-Pt interactions

Citation Format(s)

[ RIS ] [ BibTeX ]

Synthesis, characterization and spectroscopic studies of cyclometalated platinum(II) complexes containing meta-bis(2-pyridoxy)benzene. / Chiu, Brenda Ka-Wen; Lam, Michael Hon-Wah; Lee, Derek Yiu-Kin et al.

In: Journal of Organometallic Chemistry, Vol. 689, No. 18, 15.09.2004, p. 2888-2899.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

Chiu, BK-W, Lam, MH-W, Lee, DY-K & Wong, W-Y 2004, 'Synthesis, characterization and spectroscopic studies of cyclometalated platinum(II) complexes containing meta-bis(2-pyridoxy)benzene', Journal of Organometallic Chemistry, vol. 689, no. 18, pp. 2888-2899. https://doi.org/10.1016/j.jorganchem.2004.06.006

Chiu, B. K-W., Lam, M. H-W., Lee, D. Y-K., & Wong, W-Y. (2004). Synthesis, characterization and spectroscopic studies of cyclometalated platinum(II) complexes containing meta-bis(2-pyridoxy)benzene. Journal of Organometallic Chemistry, 689(18), 2888-2899. https://doi.org/10.1016/j.jorganchem.2004.06.006

Chiu BK-W, Lam MH-W, Lee DY-K, Wong W-Y. Synthesis, characterization and spectroscopic studies of cyclometalated platinum(II) complexes containing meta-bis(2-pyridoxy)benzene. Journal of Organometallic Chemistry. 2004 Sep 15;689(18):2888-2899. Epub 2004 Jul 19. doi: 10.1016/j.jorganchem.2004.06.006

Chiu, Brenda Ka-Wen ; Lam, Michael Hon-Wah ; Lee, Derek Yiu-Kin et al. / Synthesis, characterization and spectroscopic studies of cyclometalated platinum(II) complexes containing meta-bis(2-pyridoxy)benzene. In: Journal of Organometallic Chemistry. 2004 ; Vol. 689, No. 18. pp. 2888-2899.