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Cleavage of Tellurium–Carbon Bonds of Hexavalent Organotellurium Compounds by Potassium Graphite
Author(s) -
Miyasato Masataka,
Minoura Mao,
Akiba Kinya
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20010716)40:14<2674::aid-anie2674>3.0.co;2-h
Subject(s) - hypervalent molecule , tellurium , chemistry , reactivity (psychology) , cleavage (geology) , potassium , graphite , bond cleavage , ion , carbon fibers , medicinal chemistry , crystallography , triple bond , inorganic chemistry , stereochemistry , polymer chemistry , organic chemistry , double bond , materials science , catalysis , iodine , medicine , alternative medicine , pathology , fracture (geology) , composite number , composite material
The potassium ion intercalated in graphite results in unique reactivity of Ar 5 Te − K + C 8 ( 1 ), formed by cleavage of one of the Te−C(Ar) bonds of Ar 6 Te (see scheme) by KC 8 . Thus, 1 reacted quantitatively with CH 3 I to give Ar 5 TeCH 3 , which was not obtainable from Ar 5 Te − Li + . The Te−CH 3 bond of Ar 5 TeCH 3 is cleaved in preference to the Te−C(Ar) bonds, and formation of Ar 4 Te(CD 3 ) 2 suggests the intermediacy of the hypervalent dianion Ar 4 Te 2− .