33284-53-6Relevant articles and documents
Photochemical reactions of [(η5-C5R5)Re(CO)3] (R = Me or H) with aryl halides in benzene: Stoichiometric formation of biphenyl
Zhu, Bolin,Huang, Xinwei,Hao, Xiaoting
, p. 5932 - 5939 (2015/02/18)
Photolysis of [Cp ??Re(CO)3] (Cp? = η5-C5Me5) with bromobenzene or chlorobenzene in benzene results in biphenyl and the corresponding rhenium hydride halide complex trans-[Cp?Re(CO)2H(X)], which further converts into the dihalide complexes cis/trans-[Cp?Re(CO)2X2] (X = Br, Cl). Additional experiments, including isotopic labeling experiments, indicate that one phenyl ring in biphenyl comes from the aryl halide and the other one comes from solvent benzene. Photolysis of [CpRe(CO)3] (Cp = η5-C5H5) with aryl halide in benzene similarly generates biphenyl, the corresponding rhenium hydride halide complex. Furthermore, the reaction also affords small amounts of rhenium dihydride complex [CpRe(CO)2H2]. Plausible mechanisms for the formation of the different types of products are proposed that involve intermolecular C-X and C-H activation. Molecular structures of trans-[Cp?Re(CO)2(Br)(Cl)] (trans-6) and trans-[CpRe(CO)2(Br)(Cl)] (trans-12) determined by X-ray diffraction are also presented.
Physical, spectral and chromatographic properties of all 209 individual PCB congeners
Bolgar,et al.
, p. 2687 - 2705 (2007/10/03)
Through the use of two capillary GC columns: 40% octadecyl/ 15% phenyl methyl siloxane and 50% phenyl methyl siloxane, it was possible to separate 201 PCB congeners with only four unresolved pairs. The data compiled in this study for all 209 congeners will aid in the identification of selected individual components of these environmental pollutants. The use of this data also presents the opportunity for the improved quantification of the commercial PCB formulations. -from Authors