CHELATE FORMATION OF N-TRIS(2-AMINOETHYL) AMINE-N',N',N'',N''',N'''-HEXAACETIC ACID (H(6)TTAHA) AND YRID-2-YL-METHYL)ETHYLENEDIAMINE-N,N',N'-TRIACETIC ACID (H(3)PEDTA) WITH GADOLINIUM(III) - SYNTHESES, STABILITY-CONSTANTS, AND NMR-RELAXIVITIES

Authors
RULOFF R ARNOLD K BEYER L GRUNDER W WAGNER M HOYER E
Citation
R. Ruloff et al., CHELATE FORMATION OF N-TRIS(2-AMINOETHYL) AMINE-N',N',N'',N''',N'''-HEXAACETIC ACID (H(6)TTAHA) AND YRID-2-YL-METHYL)ETHYLENEDIAMINE-N,N',N'-TRIACETIC ACID (H(3)PEDTA) WITH GADOLINIUM(III) - SYNTHESES, STABILITY-CONSTANTS, AND NMR-RELAXIVITIES, Zeitschrift fur anorganische und allgemeine Chemie, 621(5), 1995, pp. 807-811
Citations number
21
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Zeitschrift fur anorganische und allgemeine Chemie
ISSN journal
00442313 → ACNP
Volume
621
Issue
5
Year of publication
1995
Pages
807 - 811
Database
ISI
SICI code
0044-2313(1995)621:5<807:CFONA>2.0.ZU;2-D
Abstract
The chelate formation of minoethyl)amine-N',N',N'',N'',N''',N'''-hexaa cetic acid (H(6)TTAHA) and yrid-2-yl-methyl)ethylenediamine-N,N',N'-tr iacetic acid (H(3)PEDTA) with gadolinium(III) has been studies potenti ometrically in aqueous solution at 25 degrees C and mu = 0.1 (KCl). [G d(TTAHA)](3-):1g beta(M/ML) = 19.0;{H[Gd(TTAHA)]}(2-):1gK(H/MHL) = 8.3 0; [Gd(PEDTA):1g beta(M/ML) = 15.56. Both 1:1 gadolinium(III) complexe s were isolated as Na2H[Gd(C18H24N4O12)] . 3.5 H2O and [Gd(C14H16N3O6] . 3 H2O, respectively. Their H-1-NMR relaxivities [1 . mmol(-1) . s(- 1)] ({H[Gd(TTAHA)]}(2-): 9.5; [Gd(PEDTA)]:8.8) offer promising applica tions for H-1-NMR imaging.