Lanthanide complexes—VI. Complexes of yttrium and lanthanide thiocyanates, chlorides, nitrates and salicylates with 1,2-bis(pyridine-α-aldimino)ethane

Abstract

Solid complexes of the type MX 3L have been prepared ( M = a lanthanide or yttrium; X  Cl, NO 3, NCS or 2-OH.C 6H 4.COO; L  C 5H 4N:CH:N CH 2CH 2 N:CH.C 5H 4N). Their i.r. (4000-200 cm −1 and electronic spectra and other properties are discussed in relation to proposed structures. In aqueous solution a fairly stable species [M(C 14H 14N 4) 2] 3+ predominates.