Relaxivity of Paramagnetic Complexes of Manganese and Gadolinium

Copper(II) and nickel(II) ions were bonded in complexes of salicylideneimine type on a glycidyl methacrylate-ethylenedimethacrylate copolymer. The geometry of the complexes on the polymer was studied by measuring their magnetic properties, EPR spectra, and ultraviolet-visible spectra.Only paramagnetic complexes possessing a pseudo-tetrahedral configuration were found. The effect of the polymer matrix and of the immobility of the bonded Schiff base on the distortion of the coordination sphere of the central ion is discussed.

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ChemInform Abstract:13C and Proton Relaxation in Paramagnetic Complexes of Amino Acids.

Chemischer Informationsdienst ◽

10.1002/chin.198628077 ◽

1986 ◽

Vol 17 (28) ◽

Author(s):

B. HENRY ◽

J.-C. BOUBEL ◽

J.-J. DELPUECH

Keyword(s):

Amino Acids ◽

Proton Relaxation ◽

Paramagnetic Complexes

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ChemInform Abstract: CARBON-13 RELAXATION IN PARAMAGNETIC COMPLEXES OF AMINO ACIDS. STRUCTURAL AND DYNAMICAL INFORMATION ON A MANGANESE(II) COMPLEX OF HISTIDINE

Chemischer Informationsdienst ◽

10.1002/chin.197607276 ◽

1976 ◽

Vol 7 (7) ◽

pp. no-no

Author(s):

JENS J. LED ◽

DAVID M. GRANT

Keyword(s):

Amino Acids ◽

Paramagnetic Complexes ◽

Dynamical Information

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ChemInform Abstract: NMR OF PARAMAGNETIC COMPLEXES. XXVIII. 1,1′-DIISOPROPYLMANGANOCENE, SYNTHESIS AND PARAMAGNETIC CARBON-13 AND PROTON NMR CHARACTERIZATION OF

Chemischer Informationsdienst ◽

10.1002/chin.198325315 ◽

1983 ◽

Vol 14 (25) ◽

Author(s):

F. H. KOEHLER ◽

N. HEBENDANZ

Keyword(s):

Proton Nmr ◽

Nmr Characterization ◽

Paramagnetic Complexes

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NMR Spectra of 1-Vinylimidazole, Transformed by Paramagnetic Complexes

Applied Magnetic Resonance ◽

10.1007/s00723-018-1076-0 ◽

2018 ◽

Vol 50 (4) ◽

pp. 569-577

Author(s):

Vladimir K. Voronov ◽

Igor A. Ushakov ◽

Evgenia A. Funtikova

Keyword(s):

Nmr Spectra ◽

Paramagnetic Complexes

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Metallkomplexe mit Tetrapyrrol-Liganden, XXXVIII [1]. Zur Kenntnis der Alkyl- und Arylimidovanadium(IV)-Porphyrine / Metal Complexes with Tetrapyrrole Ligands, XXXVIII [1]. On the Knowledge of Alkyl- and Arylimidovanadium(IV) Porphyrins

Zeitschrift für Naturforschung B ◽

10.1515/znb-1985-1021 ◽

1985 ◽

Vol 40 (10) ◽

pp. 1362-1370 ◽

Cited By ~ 12

Author(s):

Johann W. Buchler ◽

Stefan Pfeifer

Keyword(s):

Mass Spectra ◽

Nmr Spectra ◽

Primary Amines ◽

Reactive Intermediate ◽

H Nmr ◽

Vanadyl Complex ◽

Elemental Analyses ◽

Paramagnetic Metal ◽

Paramagnetic Complexes ◽

Proton Resonances

A series of novel alkyl or aryiimidovanadium(IV) 5,10,15,20-tetra(p-tolyl)porphyrinates, VNR(TTP) (4a-4g), is described. They are obtained from the vanadyl complex, VO(TTP) (2a) via the reactive intermediate VCl2(TTP) (3b) which undergoes aminolysis with the respective primary amines RNH2 (R = tBu, Ph, pTol, pClPh, pAnis, pBiph, ptBuPh)**. The formulae are proved by elemental analyses and mass spectra. The paramagnetic complexes are stable to water and may thus be purified by chromatography but are hydrolyzed to give 2 a on treatment with acetic acid. The UV/VIS and 1H NMR spectra of 4a-4g are of the same type as 2a, but the former are slightly hypsochromically shifted, and the latter do not show the proton resonances of the organylimide ligands due to the proximity of the paramagnetic metal center.

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