F. Avecilla et al., ONE-POT SYNTHESIS OF LANTHANIDE AND YTTRIUM CRYPTATES CONTAINING PYRIDINE UNITS, Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 52(10), 1997, pp. 1273-1277
Complexes of yttrium(III) and lanthanide(III) ions with an axial macro
bicycle derived from the 2+3 Schiff-base condensation of tris(2-aminoe
thyl)amine with 2,6-diformylpyridine have been prepared in high yields
using a one-step procedure. The complexes, with formula [M2L](NO3)(6)
. xH(2)O . ySolv, (M = Y, La - Lu, except Pm) and [M2L](ClO4)(6) . xH
(2)O . ySolv, (M = La - Er, except Pm), have been characterised by ele
mental analysis, molar conductivity, mass, IR and H-1 NMR spectroscopy
.