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Aromatic H/D Exchange Reaction Catalyzed by Groups 5 and 6 Metal Chlorides

โœ Scribed by Guo Qiao-Xia; Shen Bao-Jian; Guo Hai-Qing; Takahashi Tamotsu

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
68 KB
Volume
23
Category
Article
ISSN
0256-7660

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โœฆ Synopsis

Groups 5 and 6 metal chlorides such as MoCl 5 , WCl 6 , NbCl 5 and TaCl 5 were found to be simple and very efficient catalysts for the aromatic H/D exchange reactions. Compared with other metal chlorides such as ZnCl 2 , SnCl 4 and TiCl 4 , groups 5 and 6 metal chlorides showed better catalytic activity in the H/D exchange reaction of naphthalene with C 6 D 6 . Deuteration of anthracene using MoCl 5 as a catalyst proceeded within 24 h at room temperature. Other aromatic compounds such as toluene, diphenylmethane and 1,1,2-triphenylethane were also deuterated smoothly in C 6 D 6 within 24 h at room temperature. Keywords H/D exchange reaction, aromatic compound, groups 5 and 6 metal chloride

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Density functional calculations are carried out on the Cu5(C6Hs)5, Ag4(C6Hs)4 and Aus(CrHs)5 systems. Electronic structure and bonding aspects of the interaction between the Mn and (C6H5)n units are investigated. Calculations are performed on the corresponding naked clusters of four and five metal a