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White background Black background Wireframe model Highlight a Dimer in a spacefilling model. Ball & Stick model |
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The crystal packing of benzoic acid. The O-H hydrogens are disordered and appear as 2 hydrogens bridging 2 oxygens; in reality each is half-occupied. Half the hydrogens are at one position, half at the other.
See Wilson, C. C.; Shankland, N.; Florence, A. J. J. Chem. Soc., Faraday Trans., 1996, 92, 5051-5057. |