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- W1972091657 abstract "Abstract Complex formation between gadolinium(III) tetraphenylporphyrin, GdTPP(acac), and some amines has been investigated in toluene solution. GdTPP(acac) gives 1:1 complexes with morpholine, pyrimidine, imidazole and 1-methylpyrrolidine. 1:2 complexes are formed with the chain aliphatic amines like triethyl-, tributyl-, tripentyl- and trioctylamine. Spectrophotometric studies of the formation equilibria yield the values of the stability constants. An analysis of the experimental data strongly suggests that in the amine solutions of GdTPP(acac) additional coordination of the gadolinium ion takes place. CN increases from 6 to 8. GdTPP(acac)-amine adducts are very stable in solution, and prevent demetallation of the gadolinium porphyrin complex, which is usual in common solvents." @default.
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- W1972091657 date "1993-03-01" @default.
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- W1972091657 title "A study of complex formation between some aliphatic or heterocyclic amines and gadolinium(III) tetraphenylporphyrin" @default.
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- W1972091657 doi "https://doi.org/10.1016/s0020-1693(00)85541-3" @default.
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