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Isothiocyanates. XI. The determination of Hammett's σ constant of the NCS group with absorption frequencies in the infrared

K. Antoš, A. Martvoň, and P. Kristián

Slovak Technical University, Bratislava

 

Abstract: cf. CA 58, 8529h, 8533f. On the basis of correlations of IR absorption frequencies of OH and CO groups with Hammett's σ consts. of various substituents, the const., σp, for the group NCS, in phenols (+0.34 ± 0.07), in benzoic acids (+0.48 ± 0.15), and in acetophenones (+0.32 ± 0.13) was detd. The pos. values of σp for the NCS group indicate its electron accepter character.

Full paper in Portable Document Format: 175a294.pdf (in Slovak)

 

Chemical Papers 17 (5) 294–299 (1963)

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