Abstract
X-ray and magnetic resonance studies of single crystals of 1,1-cyclopentanedi-carboxylic acid and the cyclopentyl-1-carboxylic acid radical indicate that at room temperature the radical undergoes pseudorotation. The five-membered ring of the molecule is disordered probably also as a result of pseudorotation.
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MARGULIS, T., DALTON, L. & KWIRAM, A. Structure and Pseudorotation in 1,1-Cyclopentanedicarboxylic Acid and the Cyclopentyl-1-Carboxylic Acid Radical. Nature Physical Science 242, 82–83 (1973). https://doi.org/10.1038/physci242082a0
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DOI: https://doi.org/10.1038/physci242082a0