Crystal structure of NN′-bis-p-bromophenyl-2,2,4,4-tetramethylcyclobutane-1,3-di-imine

Abstract

The crystal and molecular structure of the title compound has been determined from three-dimensional X-ray diffraction data. Crystals are monoclinic, space group P2₁/c, Z= 2, with cell dimensions a= 12.64(1), b= 10.11 (1), c= 7.60(1)Å, and β= 94.42(9)°. Data were collected on a diffractometer, and the structure was solved by normal heavy-atom methods and refined by block-matrix least-squares analysis to R 0.064. The molecule contains an inversion centre with a planar cyclobutane ring. The ring bond parameters are: C–C(ring) 1.52(1), C–CH₃ 1.55(1), and C–N 1.26(1)Å. The bond angles in the ring are 86.1(9) and 93.9(9)°.