Composition, stability, and paramagnetic birefringence of heteronuclear terbium(III) and iron(III) d- And dl-tartrates

Abstract

The formation of the heteronuclear terbium(III) and iron(III) d- and dl-tartrates was studied by the proton magnetic relaxation, pH-metric, and paramagnetic birefringence methods in conjunction with mathematical simulation. The paramagnetic birefringence constants mP of these compounds were calculated. The stereoselective formation of dl-tartrates FeTb(HL)3 3-, FeTb(HL)2L4-, and Fe2Tb2HL4 3- and the stereospecific formation of d-tartrates Fe3Tb3L6 6- and Fe3Tb3L6(OH)2 8- and dl-tartrates Fe2Tb2L4 4-, Fe2Tb2L4(OH)2 6-, and Fe2Tb2(HL)4L2 8- (H4L is tartaric acid) was discussed. © 1998 MAEe cyrillic signK Hayκa/Interperiodica Publishing.