99474-73-4Relevant academic research and scientific papers
STUDIES OF PENDANT-ARM MACROCYCLIC LIGANDS. PART 4. TWO PENTA-AZA MACROCYCLES BASED ON 1-(2'-DIMETHYLAMINOETHYL)-1,5,9,13-TETRA-AZACYCLOHEXADECANE AND ITS COMPLEXES WITH BIVALENT METAL IONS
Alcock, Nathaniel W.,Curzon, Eirian H.,Moore, Peter,Omar, Hadi, A. A.,Pierpoint, Colin
, p. 1361 - 1364 (1985)
Two new pendant-arm sixteen-membered ring penta-aza macrocycles, 1-(2'-dimethylaminoethyl)-1,5,9,13-tetra-azacyclohexadecane (L1) and 1-(2'-dimethylaminoethyl)-5,9,13-trimethyl-1,5,9,13-tetra-azacyclohexadecane (L2) have been prepared and the complexes of L1 with Ni2+, Cu2+, Co2+, Zn2+, Cd2+, and Hg2+, investigated.The ions Ni2+, Cu2+, and Co2+ form high-spin five-co-ordinnate complexes.Carbon-13 n.m.r. spectroscopy shows 1)>2 to be a 1:1 mixture of two species, one symmetric and the other asymmetric, and 1)>2 is analogous but with evidence of a small amount of a third species.Attempts to prepare 1)>2+ have led to its immediate reduction to metallic mercury.
