A new hexaaminomacrocycle for ditopic binding of bromide

作者：Gibson Don; Dey Kalpana R; Fronczek Frank R; Hossain Md Alamgir^*

来源：Tetrahedron Letters, 2009, 50(47): 6537-6539.

DOI：10.1016/j.tetlet.2009.09.041

A hexaaminomacrocycle L. containing four secondary and two tertiary amines has been synthesized and crystallized with hydrobromic acid. The structural analysis of the bromide complex Suggests that the ligand in its tetra protonated form. is involved in coordinating two bromides from both the sides via hydrogen bonding interactions with N Br distance of 3 351 angstrom, forming a ditopic complex The other two bromides are Outside the cavity, and singly bonded to the macrocycle The molecules are packed showing layer structures in which the internal bromides are locked between the la

• 出版日期2009-11-25