Rw. Matthews et al., AMBIDENTATE BINDING IN MACROCYCLIC HELICATES - TOWARDS TUNING SECONDARY STRUCTURE, Chemical communications, (3), 1996, pp. 309-310
X-Ray analysis of new helicates of Cd-II and Pb-II derived from a tetr
aimine macrocyclic ligand shows that the compression of the double-hel
ical array as the size of the metal ion increases corresponds with a c
hange in coordination mode of the ligand.