%0 Journal Article %T 2,5-Bis(4-methylphenyl)-4-oxopentanoic acid %A Jun Wang %A Xiaomei Zhuang %A Yong Hou %J Acta Crystallographica Section E %D 2010 %I International Union of Crystallography %R 10.1107/s1600536810037323 %X The title compound, C19H20O3, was obtained from 1,4-bis(4-methylphenyl)but-3-yn-2-one in the presence of carbon monoxide by Ni(CN)2 catalysis in a basic aqueous medium. Intermolecular O¡ªH...O hydrogen bonds lead to the formation of hydrogen-bonded carboxylic acid dimers [graph-set motif R22(8)]. Weak C¡ªH...O hydrogen bonds between neighbouring dimers further extend the structure to give rise to a three-dimensional supramolecular network. %U http://scripts.iucr.org/cgi-bin/paper?S1600536810037323