Steric effects. A study of a rationally designed system

G Bott, LD Field, S Sternhell

Index: Bott, Garry; Field, Leslie D.; Sternhell, Sever Journal of the American Chemical Society, 1980 , vol. 102, # 17 p. 5618 - 5626

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Citation Number: 311

Abstract

Abstract: The principles for the rational design of systems suitable for the study of steric effects are defined. A suitable molecular framework [6-(2-X-phenyl)-SY-1, l-dimethylindan, 11 was synthesized and a study of internal rotation by dynamic NMR spectroscopy (DNMR) of 33 derivatives, differing principally in the nature of the molecular fragment (X), showed the following.(i) For 1 (Y= Me; X= halogen) the rotational barriers (AG') increase smoothly and ...