Reagents with Hypervalent Iodine: Format
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Dr. Pedro de Armas; Dr. Cosme G. Francisco; Prof. Ernesto SuΓ‘rez
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Article
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1992
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John Wiley and Sons
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English
β 397 KB
The intensities of the absorbances of i(C0) at 1975 and 2045cm-' and v(0,CCF;) at 1694and 1644 em-' increase in a c o n ~t a n t ratio. Compared with v(0,CCF;) of 1676cm-' in 2 and 1692cm-' in [Bu,N](O,CCF,). the hypsochromic shift ofone 0,CCF; group (1694 cm-') corresponds to an ionic 0,CCF; unit a