Structural Studies of Some o- and p-Nitrophenylcarbamates by IR Spectroscopy and X-Ray Diffraction

Monika Simon, Carol Csunderlik, G. Jones
2008 Zeitschrift für Naturforschung. B, A journal of chemical sciences  
N-Alkyl-o-nitrophenylcarbamates as solids present two carbonyl stretching bands in the region 1700 - 1800 cm−1 but similar N-alkyl-p-nitrophenylcarbamates have only one such band in the IR spectrum. In solution both kinds of carbamate present one carbonyl stretching band, but for the former, the splittings occur when the carbamates crystallize. Four crystal structures were analyzed by X-ray diffraction. The two ortho derivatives have more than one molecule in the asymmetric unit, which is
more » ... nit, which is consistent with the IR observations.
doi:10.1515/znb-2008-1209 fatcat:5cjlii2ft5bd7eoucqnraxgjdi