S. Kumar et al., N-H-CENTER-DOT-CENTER-DOT-CENTER-DOT-CC-H HYDROGEN-BONDS AS PART OF COOPERATIVE NETWORKS - CRYSTAL-STRUCTURE OF N-(P-METHYLPHENYL)-N-PROP-2-YNYLUREA, Journal of molecular structure, 448(1), 1998, pp. 51-55
In the crystal structure of N-(4-methylphenyl)-N-prop-2-ynylurea, urea
dimers are formed which are linked by cooperative N-H ... C equivalen
t to C-H ... O hydrogen bonds, leading to an infinite two-dimensional
hydrogen bond network. (C) 1998 Elsevier Science B.V. All rights reser
ved.