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

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

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Author(s)

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

Detail(s)

Original languageEnglish
Pages (from-to)2888-2899
Journal / PublicationJournal of Organometallic Chemistry
Volume689
Issue number18
Online published19 Jul 2004
Publication statusPublished - 15 Sep 2004

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)

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 journalpeer-review