14364-93-3Relevant articles and documents
Volatile fluorinated trimethylplatinum(IV) β-diketonates with pyridine: Synthesis, properties, and structure
Zharkova,Baidina,Igumenov
, p. 680 - 687 (2011)
Volatile fluorinated trimethylplatinum(IV) β-diketonates with pyridine (CH3)3Pt(CH3-CO-CH-CO-CF3)Py (I) and (CH3)3Pt(CF3-CO-CH-CO-CF3)Py (II) obtained from trifluoroacetylacetone and hexafluoroacetylacetone were studied. The synthesis, elemental analysis data, and IR spectra were described. X-Ray diffraction analysis was performed and the crystal structure was determined; the geometric characteristics of complexes I and II were obtained. Both structures are monomeric molecular structures. The molecules in the crystal are connected only by weak van der Waals forces. The coordination polyhedron of platinum in I and II is a slightly distorted octahedron. The shortest Pt...Pt distances are 6.639 A (for I) and 6.254 A (for II). The average P-O, Pt-N, and P-C distances are 2.157, 2.182, and 2.030 A, respectively. The deviations of the bond angles at Pt atoms from ideal values of 90° do not exceed 4.8°.
Volatile fluorinated trimethylplatinum(IV) β-diketonates: Synthesis, properties, and structure
Zharkova,Baidina,Turgambaeva,Romanenko,Igumenov
, p. 40 - 45 (2012)
Stable volatile fluorinated trimethylplatinum(IV) β-diketonates: [(CH3)3Pt(CF3-CO-CH-CO-CF3)H 2O], (CH3)3Pt(hfac)H2O (1); [(CH3)3Pt(CF3-CO-CH-CO-CH3)H 2O], (CH3)3Pt(tfac)H2O (2); [(CH3)3Pt(CF3-CO-CH-CO-C(CH3) 3H2O], (CH3)3Pt(ptac)H2O (3) were synthesized with the yield of 92-95%. The obtained compounds were identified by elemental analysis, 1H and 13C NMR, IR-spectroscopy. Crystal structure and thermal properties were studied. In compounds 1, 2, and 3, the coordination Pt polyhedron is a slightly distorted PtC3O3 octahedron formed by three methyl groups, water molecule, and two oxygen atoms of the bidentate ligand. The Pt-CMe, Pt-OL, and Pt-OW bond lengths and the chelate O-Pt-O angle values are within 1.86-2.16, 2.04-2.27, and 2.23-2.30 A? and 87.8-88.9°, respectively, in all complexes. The complexes are not sensitive to oxygen and moisture and stable for a long time upon storage.
Weakly-coordinated stable platinum nanocrystals
Marquardt, Dorothea,Barthel, Juri,Braun, Markus,Ganter, Christian,Janiak, Christoph
, p. 7607 - 7615 (2013/01/15)
Stable platinum nanocrystals with small diameters (1.0-2.3 nm), that are stable for a long time, with narrow size distributions were easily and reproducibly prepared without any additional stabilizers in glycol, glycerol, the ionic liquids (ILs) 1-n-butyl-3-methyl-imidazolium tetrafluoroborate [BMIm][BF4] and N-butyl-N-trimethyl-ammonium bis(trifluoromethylsulfonyl)imide [N4111][NTf2] or diphenylmethane (CH2Ph2) by thermal, photolytic or microwave assisted decomposition of the organometallic precursor methylcyclopentadienyl-trimethylplatinum(iv), (MeCp)PtMe3. Decomposition of the easily dispensible, air and moisture stable organometallic Pt(iv) precursor (MeCp)PtMe3 leads to well defined, small, crystalline and longterm stable Pt-nanoparticle (Pt-NP) dispersions without any additional surface-capping ligands. The Pt-NP/IL dispersion was shown to be a highly active catalyst (TOF 96000 h-1 at 0.0125 mol% Pt and quantitative conversion) for the biphasic hydrosilylation of phenylacetylene with triethylsilane, to the distal and proximal products triethyl(2- and1-phenylvinyl)silane.
