An 27Al NMR study of complexes between Al3+ and imidazolidine-2-one in concentrated aqueous solution
β Scribed by R. Caminiti; A. Lai; G. Saba; G. Crisponi
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 367 KB
- Volume
- 97
- Category
- Article
- ISSN
- 0009-2614
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## Abstract The ^1^H and ^17^O NMR relaxometric properties of two cationic complexes formed by Gd^III^ with a macrocyclic heptadentate triamide ligand, L^1^, and its Nmethylated analogue, L^2^, have been investigated in aqueous media as a function of pH, temperature and magnetic field strength. The
The 9 Be and 27 Al NMR shieldings have been calculated for the species Be(OH 2 ) 4 Ψ2 , Be(OH 2 ) 3 OH Ψ1 , Be 3 (OH) 3 (OH 2 ) 6 Ψ3 , Be 2 (OH) 2 (OH 2 ) 4 Ψ2 , Be 2 (OH)(OH 2 ) 6 Ψ3 , Al(OH 2 ) 6 Ψ3 , Al(OH 2 ) 5 OH Ψ2 , and Al 2 (OH) 2 (OH 2 ) 8 Ψ4 using a 6-31G\* basis set and the gauge-includin