Home Strukturen zweier isomerer Gadolinium(III)-Polyaminopolycarboxylate -Argumente für signifikante Unterschiede ihrer 1H-NMR-Relaxation/Structures of Two Isomeric Gadolinium(III) Polyamino Polycarboxylates -Relation to their Significant Differences in 1H NMR Relaxation
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Strukturen zweier isomerer Gadolinium(III)-Polyaminopolycarboxylate -Argumente für signifikante Unterschiede ihrer 1H-NMR-Relaxation/Structures of Two Isomeric Gadolinium(III) Polyamino Polycarboxylates -Relation to their Significant Differences in 1H NMR Relaxation

  • Robert Ruloff , Thomas Gelbrich , Joachim Sieler , Eberhard Hoyer and Lothar Beyer
Published/Copyright: June 2, 2014
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Zeitschrift für Naturforschung B
From the journal Zeitschrift für Naturforschung B Volume 52 Issue 7

Abstract

We present preparation and X-ray crystal structures of gadolinium(III) complexes with two isomeric ligands; triethylenetetraminehexaacetic acid, H6ttha, and tris(2-aminoethyl)amine-hexaacetic acid, H6ttaha, respectively. In case of [C(NH2)3]2[Gd(Httha)] · 5 H2O (1) the inner coordination sphere is made up of 9 donor atoms of the ligand and reflects the low efficiency in accelerating 1H NMR relaxation of an aqueous solution. In case of [C(NH2)3]3[Gd(ttaha)] · 3 H2O (2) the coordination number of 9 is realized via 7 donor atoms of the ligand and 2 oxygen atoms of a pending acetate group of the adjacent complex. Luminescence studies in aqueous solution confirm replacement of this acetate group by 2 water molecules. The relaxivity of [Gd(Httaha)]2- is 7.3 ± 0.1 mM -1 s -1 as determined at pH = 7.2, 20 MHz and 40°C.

Keywords: Gadolinium(III) Chelates; Solid State Structures; Lanthanoids; 1H NMR Relaxivity; Magnetic Resonance Imaging
Received: 1997-4-23
Published Online: 2014-6-2
Published in Print: 1997-7-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

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  2. Difluorphosphorylcyclosilazane -Synthese und Kristallstruktur/Difluorophosphorylcyclosilazanes -Syntheses and Crystal Structure
  3. Synthese von 2,2-DiphenylethyI-substituierten Silanen -Molekülstruktur von Trichlor-2,2-diphenylethylsilan /Syntheses of 2,2-Diphenylethyl-Substituted Silanes -Molecular Structure of Trichloro-2,2-diphenylethylsilane
  4. Ein [Ba(Ca,Mn)O6]-Gerüst mit eingelagerten V-O-V-Gruppen in der Kristallstruktur von Ba(Ca0.6Mn0.4)V2O7 /A [Ba(Ca,Mn)O6] Framework with Incorporated V-O-V Groups in the Crystal Structure of Ba(Ca0.6Mn0.4)V2O7
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  6. Chemie polyfunktioneller Moleküle, 127 PPh2-Eliminierung aus dem PP-verknüpften Phosphazen Ph2P-N=PPh2-PPh2=N-PPh2 mit [C5H5Fe(CO)(μ-CO)]2; Kristallstrukturanalyse des Phosphazen-Derivats /Chemistry of Polyfunctional Molecules, 127 PPh2 Elimination from the PP Connected Phosphazene Ph2P-N=PPh2-PPh2=N-PPh2, with [C5H5Fe(CO)(μ-CO)]2; Crystal Structure of the Phosphazene Derivative
  7. Synthese und Kristallstruktur von Perhydro-1,4-benzoxazino[2,3-n]phenoxazin/Synthesis and Crystal Structure of Perhydro-1,4-benzoxazino[2,3-n]phenoxazine
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https://doi.org/10.1515/znb-1997-0707
Keywords for this article
Gadolinium(III) Chelates; Solid State Structures; Lanthanoids; 1H NMR Relaxivity; Magnetic Resonance Imaging

Articles in the same Issue

  1. Titelei
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  3. Synthese von 2,2-DiphenylethyI-substituierten Silanen -Molekülstruktur von Trichlor-2,2-diphenylethylsilan /Syntheses of 2,2-Diphenylethyl-Substituted Silanes -Molecular Structure of Trichloro-2,2-diphenylethylsilane
  4. Ein [Ba(Ca,Mn)O6]-Gerüst mit eingelagerten V-O-V-Gruppen in der Kristallstruktur von Ba(Ca0.6Mn0.4)V2O7 /A [Ba(Ca,Mn)O6] Framework with Incorporated V-O-V Groups in the Crystal Structure of Ba(Ca0.6Mn0.4)V2O7
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  7. Synthese und Kristallstruktur von Perhydro-1,4-benzoxazino[2,3-n]phenoxazin/Synthesis and Crystal Structure of Perhydro-1,4-benzoxazino[2,3-n]phenoxazine
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  10. The Thermal Isomerization of a Tetrahydro-2,3-disilanaphthalene into a 1,2-Disilacyclobutane -The Conversion of a Formal Silene [2+4] Cyclodimer into the [2+2] Cycloadduct
  11. Synthese und Kristallstruktur von [(Cl3Si)2N]2TiCl2 -ein perchloriertes N-Silyl-titanamid /Synthesis and Crystal Structure of [(Cl3Si)2N]2TiCl2 -a Fully Chlorinated N-Silyl Titanium Amide
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  15. Reaktionen von Azacoronanden mit Quecksilber(II)iodid: Kristallstrukturen zweier Komplexe von Hgl2 mit Diaza-15-krone-5 und Diaza-18-krone-6 /Reactions of Azacoronands with Mercury(II) Iodide: Crystal Structures of Two Complexes of Hgl2 with Diaza-15-crown-5, and Diaza-18-crown-6
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  18. Acyclo C-Nucleosides Analogues of Condensed 1,2,4-Triazines
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