3,3′-[(2-Bromo-1,3-phenylene)bis(methylene)]bis(1-butyl-2,3-dihydro-1H-imidazole-2-selone)

Abstract

In the title compound, C22H29BrN4Se2, the two Se atoms are directed in opposite directions with respect to the central benzene ring. The C=Se bond lengths at 1.848 (5) and 1.851 (5) Å are on the long side for a double bond but shorter than expected for a C—Se single bond. In the crystal, Br...Br intermolecular interactions [3.4685 (12) Å] link the molecules into a zigzag chain propagating along the b-axis direction. In addition, there are C—H...Se intermolecular interactions present, linking the chains to form slabs parallel to the ab plane. One of the two butyl side chains is disordered over two conformations with occupancies of 0.777 (9) and 0.223 (9).

Keywords

• crystal structure
• bis(selone)
• imidazole-2-selone
• Br...Br intermolecular interactions
• C—H...Se interactions