In the title compound, C22H19Br2NO3, the central oxo-cyclo-hexane ring is in a twist-boat conformation; all the substituents (one eth-oxy-carbonyl and two aryl groups) are located in equatorial orientations. One of the -CH2- groups and the opposite -CH- group bearing a bromo-benzene substituent form the flagpoles of the twist-boat. The dihedral angle between the aromatic rings is 76.4 (4)°. In ...

9,90-(2,5-Dibromo-1,4-phenylene)bis[9H-carbazole] (1) crystallizes as a category I order–disorder (OD) structure composed of non-polar layers of one kind with B2/m(1)1 layer symmetry. The crystals are made up of the two polytypes with a maximum degree of order (MDO). The monoclinic MDO1 polytype (B21/d) possesses an orthorhombic B-centered lattice and appears in two orientations, which are rela...

Piezoelectric materials have coupled mechanical and electrical energies long been used in devices for actuators, sensors, energy harvesters, frequency filters, various additional applications. Piezoelectricity requires a non-centrosymmetric crystal structure is therefore confined to that possess periodic crystalline structure. Due the non-crystalline nature of glass, piezoelectricity fundamenta...

A method combining crystal plasticity (CP), the eXtended Finite Element Method (XFEM), and cohesive zone model (CZM) with traction separation law is developed for an Al-Cu-Mg alloy to predict effect of grain orientation on fatigue crack propagation (FCP) during stage ?? within a single crystal. The simulation results show that all orientations, Goss possesses largest deflection, then followed b...