60018-53-3Relevant academic research and scientific papers
Complexation of unsaturated carbon-carbon bonds in π-conjugated polymers with transition metals
Huber,Bangerter,Caseri,Weder
, p. 3857 - 3863 (2007/10/03)
The present paper explores the possibility of preparing π-conjugated organometallic polymer hybrid systems based on a poly(p-phenylene ethynylene) (PPE) derivative, in which the ethynylene moieties of the polymer are coordinated to platinum(II) centers. The use of the bifunctional [Pt-(μ-Cl)Cl(PhCH=CH2)]2 (2) allows, under appropriate conditions, the formation of three-dimensionally cross-linked, conjugated PPE-platinum(II) networks. The synthesis of [Pt-(μ-Cl)Cl(PhC≡CPh)]2, as a model compound, and a series of model reactions of 2 with diphenylacetylene (3) have enabled an NMR study which has revealed a number of equilibria, and suggests a mixed Pt-styrene-acetylene complex as a key structure. As expected, the coordination of Pt markedly influences the photophysical characteristics of the PPE. The photoluminescence is efficiently quenched, and the absorption maximum in the visible regime experiences a hypsochromic shift upon complexation with 2.
Hydrosilylation with platinum complexes. Preparation, low-temperature NMR spectra, and X-ray crystal structure of the novel bis-olefin catalyst cis-PtCl2(PhCH=CH2)2
Albinati, Alberto,Caseri, Walter R.,Pregosin, Paul S.
, p. 788 - 793 (2008/10/08)
The bis-olefin complex cis-PtCl2(PhCH=CH2)2 (1) has been prepared and shown to exist in several isomeric forms by 1H and 195Pt NMR spectroscopy. Complex 1 is a synthetically useful form of soluble PtCl2 and also catalyzes the hydrosilylation of styrene with Et3SiH. This latter reaction has been carried out with a variety of known complexes of platinum(II), and the results have been compared with those found for some trichlorostannate complexes of platinum. One isomer of 1 has been crystallized and its structure determined by X-ray diffraction. Crystal data for this isomer: space group P21/c, a = 13.805 (7) ?, b = 10.235 (2) ?, c = 10.985 (7) ?, β = 106.51 (4)°; Z = 4; V = 1489.1 ?3.
PHOTOINDUCED REACTIONS OF ORGANIC COMPOUNDS WITH TRANSITION METAL COMPLEXES IV. THERMAL AND PHOTOCHEMICAL REACTIONS OF PtCl62- AND PtCl42- WITH OLEFINS AND ALCOHOLS: CONVENIENT SYNTHESIS OF ?-OLEFIN COMPLEXES OF PLATINUM(II)
Shul'Pin, G. B.,Nizova, G. V.,Lederer, P.
, p. 283 - 294 (2007/10/02)
Olefinplatinum(II) ?-complexes can be synthesized by the following methods: (i) heating a solution of an olefin, alcohol or alkyl acetate and PtCl62- in acetic acid; (ii) light irradiation of a solution of PtCl62- and an olefin in acetone, and (iii) light irradiation of a solution of PtCl42- and an olefin in aqueous acetone.The possible mechanisms of the thermal and photoinduced reactions are discussed.
