Preparation and X-ray structure analysis of methylenebis(3,3-diethylazetidine-2,4-dione)

Abstract

The compound obtained by condensing methylenediamine with diethylmalonyl dichloride has been shown by X-ray crystal-structure analysis to be methylenebis(3,3-diethylazetidine-2,4-dione). The four-membered ring is planar with C–N–C, N–C–C, and C–C–C angles of 94.4, 91.0, and 83.6°. Crystallographic data are a= 11.093(3), b= 7.239(2), c= 20.494(7)Å, β= 105.74 (2)°, Z= 4, space group C2. X-Ray intensity measurements were made on a four-circle diffractometer and least-sqaures adjustment of the atomic parameters converged at R 0.040 for 1 540 reflections.