(+)‐3,11‐Dioxoandrost‐4‐ene‐17β‐carboxylic acid: catemeric hydrogen bonding in a steroidal keto acid |
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Authors: | Jacob M Newman Roger A Lalancette Hugh W Thompson |
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Abstract: | The title keto acid, C20H26O4, forms carboxyl‐to‐ketone hydrogen‐bonding catemers O?O = 2.653 (5) Å and O—H?O = 172 (5)°], linking translationally related molecules via the A‐ring ketone. The two molecules in the cell form two parallel counter‐directional chains, screw‐related in b. A total of four intermolecular C—H?O=C close contacts was found, involving both ketone functions. |
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