Synthesis, structure and photophysical properties of binuclear methylplatinum complexes containing cyclometalating 2-phenylpyridine or benzo{h}quinoline ligands: a comparison of intramolecular Pt–Pt and π–π interactions

URN to cite this document:

urn:nbn:de:bvb:355-epub-341236 Copy

DOI to cite this document:

10.5283/epub.34123 Copy

Jamali, S. ; Czerwieniec, Rafal ; Kia, Reza ; Jamshidi, Zahra ; Zabel, Manfred

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Date of publication of this fulltext: 25 Jul 2016 08:57

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Details

Item type:	Article
Open Access Type:	Alliance-/National licence
Journal or Publication Title:	Dalton Transactions
Publisher:	ROYAL SOC CHEMISTRY
Place of Publication:	CAMBRIDGE
Volume:	40
Page Range:	pp. 9123-9130
Date:	2011
Institutions:	Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Manfred Scheer Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry III - Physical Chemistry (Molecular Spectroscopy and Photochemistry) > Prof. Dr. Hartmut Yersin
Identification Number:	Value Type 10.1039/c1dt10834d DOI
Keywords:	ARYL-HALOGEN BONDS; OXIDATIVE ADDITION; PLATINUM(II) COMPLEXES; ORGANOPLATINUM(II) COMPOUNDS; TRANSITION-METALS; CRYSTAL-STRUCTURE; OLED APPLICATIONS; TRIPLET EMITTERS; PHOSPHORESCENCE; SUBSTITUTION;
Dewey Decimal Classification:	500 Science > 540 Chemistry & allied sciences
Status:	Published
Refereed:	Yes, this version has been refereed
Created at the University of Regensburg:	Yes
Item ID:	34123

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Abstract

The binuclear cyclometalated complexes [Pt2Me2(ppy)(2)(mu-dppm)], 1a, and [Pt2Me2(bhq)(2)(mu-dppm)], 1b, in which ppy = 2-phenylpyridyl, bhq = benzo{h}quinoline and dppm = bis(diphenylphosphino)-methane, were synthesized by the reaction of [PtMe(SMe2)(ppy)] or [PtMe(SMe2)(bhq)] with 1/2 equiv of dppm at room temperature, respectively. Complexes 1a and 1b were fully characterized by multinuclear ...

Abstract

The binuclear cyclometalated complexes [Pt2Me2(ppy)(2)(mu-dppm)], 1a, and [Pt2Me2(bhq)(2)(mu-dppm)], 1b, in which ppy = 2-phenylpyridyl, bhq = benzo{h}quinoline and dppm = bis(diphenylphosphino)-methane, were synthesized by the reaction of [PtMe(SMe2)(ppy)] or [PtMe(SMe2)(bhq)] with 1/2 equiv of dppm at room temperature, respectively. Complexes 1a and 1b were fully characterized by multinuclear (H-1, P-31, C-13, and Pt-195) NMR spectroscopy and were further identified by single crystal X-ray structure determination. A comparison of the intramolecular Pt-Pt and pi-pi interactions in complexes 1a and 1b has been made on the basis of data on crystal structures and wave functions analysis. The binuclear complexes 1a and 1b are luminescent in the solid state, and showing relatively intense orange-red emissions stemming from (MMLCT)-M-3 excited states. The reaction of complex 1b with excess MeI gave the binuclear cyclometalated Pt(IV)-Pt(IV) complex [Pt2Me4(bhq)(2)(mu-I)(2)], 2. Crystal structure of complex 2 shows intermolecular C-H center dot center dot center dot pi and C-H center dot center dot center dot pi interactions in solid state.

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