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A two step method was developed for the synthesis of new polyfunctional aziridines involving the addition of aromatic amines to 1 bromo 3,3,3 trichloro 1 nitropropene and the dehydro bromination of the resulting adducts. The 1 H and 13 C NMR spectroscopic and X ray diffrac tion studies showed that 1 aryl 2 nitro 3 trichloromethylaziridines are stereohomogeneous and have the geometry, such that the nitro and aryl substituents are in the trans positions with respect to the trichloromethyl group. The chemical bonding in the crystal and the gas phase was investigated based on high resolution X ray diffraction analysis of the electron density distribution and quantum chemical calculations.

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