An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Carbon aerogel (CA) supported Pt-Cu bimetallic nanoparticles were synthesized via simultaneous adsorption of bis(1,1,1,3,5,5,6,6,6-nonafluorohexane-2,4-diiminate)copper (CuDI6) and dimethyl(1,5-cyclooctadiene)platinum(II) (Pt-(cod)me(2)) onto CM in the presence of supercritical carbon dioxide (scCO(2)) and subsequent thermal conversion at ambient pressure. Binary adsorption isotherms of metal precursors on CM in scCO(2) were measured at 35 degrees C and 10.6 MPa by analyzing the fluid phase concentrations in a batch system and could be predicted from pure component adsorption isotherms using ideal adsorbed solution theory (IAST). Homogeneously dispersed Pt-Cu nanoparticles were formed on the surface of the CM via the thermal conversion of the precursors at 400 degrees C. As the Pt/Cu ratio decreased from 97:3 to 21:79, both the mean and the standard deviation of the particle size increased from 2.9 to 7.2 nm and from 1.3 to 3.7 nm, respectively. The alloying of Pt and Cu within the nanoparticles was confirmed via XRD peak shifts, and XPS data indicated that the surfaces of these Pt-Cu alloy nanoparticles were enriched in Pt.

Five new rhenium(III) complexes of the general formula ReCl2(RFCOCHCORF)(PPh3)(OPPh3), where RF = CF3 (I), C2F5 (II), C3F7 (III), C4F9 (IV), and CF3CFOC3F7 (V), were synthesized. The known rhenium(V) complex ReOCl2(OC2H5)(PPh3)2, which can readily be obtained from metallic rhenium, was used as a precursor. Two polymorphous modifications of compound I were found and studied by X-ray diffraction analysis. The thermal properties of the synthesized complexes were characterized by the DTA-TG method.

2-R-benzo[e][1,3,2]dioxaphosphinin-4-ones react with perfluorodiacetyl under mild conditions to form relatively labile spirophosphoranes containing a 1,3,2-dioxaphosphole ring. These compounds gradually convert to more stable 2-R-4,5-bis(trifluoromethyl)-1,3,2λ5-dioxaphosphole 2-oxides and diastereometic 2-R-4-(trifluoroacetyl)-4-(trifluoromethyl)benzo[f][1,3,2λ5]dioxaphosphepine 2-oxides, whose structure was confirmed by means of NMR and IR spectroscopy. The structure of 4′,5′ -bis(trifluoromethyl)-4-oxo-2-(2,2,3,3-tetrafluoropropoxy)-2λ 5-spiro[benzo[e][1,3,2]dioxaphosphinine-2,2′-[1,3,2]dioxaphosphole] was confirmed by X-ray diffraction analysis.

Reaction of polyfluorinated β-diimines with ketones gave polyfluorinated pyridines

Polyfluorinated 2-arylpyrimidines were synthesized by the reaction of polyfluorinated β-diimines with aromatic aldehydes.

3 H -Perfluoroalk-2-enes react with aqueous ammonia to form polyfluorinated iminoenamines, from which hexafluoroacetylacetone and its analogs were synthesized.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

3-Methoxy-1-(perfluoroalkyl)but-2-en-1-ones were synthesized by C -acylation of 2-methoxypropene with perfluorocarboxylic acid anhydrides, acid chlorides, and acid fluorides in the presence of tertiary amines.

The higher internal perfluoroak-2-enes react with ammonium hydroxide at atmospheric pressure to give the corresponding iminoenamines, whose further transformations yield heptafluoroacetylacetone analogs.

5-Fluoro-2,4,6-tris(perfluoroalkyl)pyrimidines were synthesized by reactions of polyfluorinated iminoenamines with perfluorocarboxylic acid anhydrides and perfluorobutanoyl chloride.

Benzo-1,3,2,dioxaphosphorin-4-ones react with hexafluoroacetone imine to form 2-R-2,5-dioxo-3,3-bis(trifluoromethyl)-6,7-benzo,1,4,2-oxozaphosphepanes.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

A new method was elaborated for the synthesis of vinylsilanes with polyfluoroalkoxy substituents at the silicon atom using the photoinitiated radical reaction of dialkoxy(methyl)vinylsilanes with perfluoro-4-metliylpent-2-ene in the presence of di-tert-butyl peroxide at room temperature.

Electrochemical perfluoroalkylation of the enol acetate of ethyl acetoacetate was studied in the conditions of the Kolbe reaction. The yields of alkylation products depend on the competing adsorption of the enol acetate, the solvent, and perfluorocarboxylates on the surface of a platinum electrode.