Synthesis and characterization of 4,7-dimethyl-1,4,7,10,15,18-hexaazabicyclo[8.5.5]octane. Crystal structures of the cryptate and of the first small azacage complexes with six-coordinate lithium geometry
The synthesis and characterization of 4,7-dimethyl-4,7,10,11,15, 18-hexaazabicy-clo[8.5.5]octane (L) is described. The ligation properties of the macrobicyclic ligand towards alkaline metal cations are considered. The crystalline structures of the ligand L and of the first small azacage complexes with six-coordinate lithium geometry, [LiL] + [BPh 4 ] - and [LiL] + [ClO 4 ] - , are presented.
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.