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Journal of Structural Chemistry

2008 year, number 5

Crystal structure of acrylamide

A. A. Udovenko, L. G. Kolzunova
Keywords: acrylamide, crystal structure, bond lengths, bond angles
Pages: 993-996


Crystal structure of acrylamide has been re-determined by single crystal X-ray diffraction (133(1) K, BRUKER SMART 1000 CCD, a = 8.228(1) Е, b = 5.759(1) Е, c = 9.760(1) Е, β = 120.04(1)°, V =
400.3(1) Е3, space group P21/c, Z = 4, R = 0.0543 for 867 reflections). In the structure strong hydrogen bonds N-H…O join the molecules of C3H5NO into bi-molecular layers, which make C…C molecular contacts. It has been demonstrated that the process of sold phase polymerization of acrylamide should proceed through the cleavage of double bonds С(1)=С(2) in the monomers and formation of bonds С(1)-С(1) and С(2)-С(2) between the closest carbon atoms of different layers.