Rotational barriers of 1,1'-binaphthyls: a computational study
✍ Scribed by Kranz, Michael; Clark, Timothy; Schleyer, Paul v. R.
- Book ID
- 126198155
- Publisher
- American Chemical Society
- Year
- 1993
- Tongue
- English
- Weight
- 923 KB
- Volume
- 58
- Category
- Article
- ISSN
- 0022-3263
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## Abstract The usefulness of molecular‐mechanics calculations in the study of the conformational properties of several tetraarylporphyrins and diarylporphyrins is demonstrated. Energy‐minimized conformations and rotational barriers of several substituted and unsubstituted arylporphyrins correspond
The rotational spectra of 1-chloro-1,1-difluoroethane (HCFC-142b) has been investigated in the frequency region 8-115 GHz with Stark, waveguide Fourier transform (FTMW), and millimeter-wave spectrometers. Assignments in large frequency regions with the corresponding frequency measurements have been
## Abstract __The Raman polarized and vibrational Raman optical activity (VROA) backward spectra are simulated for a series of 2,2′‐substituted 1,1′‐binaphthyl compounds presenting a variety of torsion angles between the two naphthalene rings. The substitution prevents free rotation along this tors