The reaction of 2, 6-diformyl-4-methylphenol, H(MDA), with boiling ethanol yields the acetalated species 2-diethylacetal-4-methyl-6-formylphenol, H(EAC). Consequently the dioxouranium(VI) complexes [UO2(EAC)2] and [(C2H5O)2CH-OC6H2CH3-HC=N(CH2)]2XUO2{X=NH, [UO2(NEAC)]; X=S, [UO2(SEAC)} have been isolated. When condensation is carried out in boiling methanol, the complex [(CH3O)2CH-OC6H2CH3-HC=N(CH2)2]2NHUO2, [UO2(NMAC)], is obtained. The compounds bearing the NH group in the chain undergo substitution of one of the acetal groups with the formyl group, yielding the species [Y2CH-OC6H2CH3-HC=N(CH2)2-NH-N(CH2)2=CH-CH3C6H2O-CHO] UO2 (Y=OEt and OMe). Ligands and complexes have been characterized by infrared, 1H and I3C nmr spectroscopy and by thermogravimetric measurements. © 1988, Taylor & Francis Group, LLC. All rights reserved.
THE BEHAVIOR OF FORMYLPHENOL DERIVATIVE COMPLEXES OF URANYL-ION IN ALCOHOLIC MEDIA
FREGONA, DOLORES;FARAGLIA, GIUSEPPINA
1988
Abstract
The reaction of 2, 6-diformyl-4-methylphenol, H(MDA), with boiling ethanol yields the acetalated species 2-diethylacetal-4-methyl-6-formylphenol, H(EAC). Consequently the dioxouranium(VI) complexes [UO2(EAC)2] and [(C2H5O)2CH-OC6H2CH3-HC=N(CH2)]2XUO2{X=NH, [UO2(NEAC)]; X=S, [UO2(SEAC)} have been isolated. When condensation is carried out in boiling methanol, the complex [(CH3O)2CH-OC6H2CH3-HC=N(CH2)2]2NHUO2, [UO2(NMAC)], is obtained. The compounds bearing the NH group in the chain undergo substitution of one of the acetal groups with the formyl group, yielding the species [Y2CH-OC6H2CH3-HC=N(CH2)2-NH-N(CH2)2=CH-CH3C6H2O-CHO] UO2 (Y=OEt and OMe). Ligands and complexes have been characterized by infrared, 1H and I3C nmr spectroscopy and by thermogravimetric measurements. © 1988, Taylor & Francis Group, LLC. All rights reserved.
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