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Crystal Structure and Molecular Modeling of 4,4′-Bi-4H-cyclopenta[def]phenanthrenylidene and Related Derivatives

✍ Scribed by E. Lee-Ruff; A. Grant; D. V. Stynes; I. Vernik


Book ID
110273324
Publisher
Springer
Year
2000
Tongue
English
Weight
79 KB
Volume
11
Category
Article
ISSN
1040-0400

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## Abstract The aromatic protons and carbons in the NMR spectra of certain clamped 1,1,2,2‐tetraarylethane‐1,2‐diols undergo intermediate exchange at ambient temperature as the result of conformational equilibrium between two enantiomeric __gauche__ forms. The crystal structures for two of these de