75 X-ray data for I (R, X, Y = Me, S, S; Me, Se, O; Me, S, Se; H, S, O) show that the mols. all have roughly planar hydantoin skeletons. The structural data are used for a simple harmonic oscillator calcn. (HOSE model) to evaluate the resonance-form contributions.
HOSE calculations and structural analyses of some 5,5-dimethylimidazolidine-2-4 dichalcogen derivatives.
ISAIA, FRANCESCO;
1987-01-01
Abstract
75 X-ray data for I (R, X, Y = Me, S, S; Me, Se, O; Me, S, Se; H, S, O) show that the mols. all have roughly planar hydantoin skeletons. The structural data are used for a simple harmonic oscillator calcn. (HOSE model) to evaluate the resonance-form contributions.
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