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Titolo:
PREPARATION OF 2-SUBSTITUTED AND 4-SUBSTITUTED 3-HYDROXY-5-METHYLFURANS AND THE ALUMINUM AND GALLIUM COMPLEXES OF 3-HYDROXY-5-METHYL-2-(N-METHYLFORMAMIDO)FURAN
Autore:
LUTZ TG; CLEVETTE DJ; HOVEYDA HR; KARUNARATNE V; NORDIN A; SJOBERG S; WINTER M; ORVIG C;
Indirizzi:
UMEA UNIV,DEPT INORGAN CHEM S-90187 UMEA SWEDEN UMEA UNIV,DEPT INORGAN CHEM S-90187 UMEA SWEDEN UNIV BRITISH COLUMBIA,DEPT CHEM VANCOUVER V6T 1Z1 BC CANADA
Titolo Testata:
Canadian journal of chemistry
fascicolo: 5, volume: 72, anno: 1994,
pagine: 1362 - 1369
SICI:
0008-4042(1994)72:5<1362:PO2A43>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
0.6 M NA(CL); AQUEOUS-SOLUTION; EQUILIBRIUM; SILICON(IV); ACID; 3-HYDROXY-4-PYRIDINONES; INDIUM; HYDROLYSIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
41
Recensione:
Indirizzi per estratti:
Citazione:
T.G. Lutz et al., "PREPARATION OF 2-SUBSTITUTED AND 4-SUBSTITUTED 3-HYDROXY-5-METHYLFURANS AND THE ALUMINUM AND GALLIUM COMPLEXES OF 3-HYDROXY-5-METHYL-2-(N-METHYLFORMAMIDO)FURAN", Canadian journal of chemistry, 72(5), 1994, pp. 1362-1369

Abstract

In model studies designed to study the synthesis of potentially hexadentate chelates based on the linkage of three furan rings to a triamine via amide linkages, new 2- and 1-substituted 3-hydroxy-5-methylfurans have been prepared. Particularly, 3-hydroxy-5-methyl-(N-methylformamido)fur (Hahm) and its Al and Ga complexes (M(ahm)(3)) have been prepared and thoroughly characterized by a variety of techniques, in the solid state and in solution. Solution equilibrium studies (mu = 0.6 M NaCl, 25 degrees C) uncovered a complicated set of equilibria in the Al3/Hahm system; the solution potentiometric data were best explained bythe presence of mixed ligand (HL = Hahm, L(-) = ahm(-)) hydroxo species [Al-3(OH)(4)L(3)](2+) and [AI(OH)(2)L(2)](-), in addition to the expected [AlL(n)]((3-n)+) (n = 1, 2, 3) species. Further solution studies at HL:M ratios of 3:1 (mu = 0.15 M NaCl, 25 degrees C) showed that Hahm is a relatively weak complexing agent for both Al and Ga, forming tris-ligand species with overall formation constants of 10(19.5) and 10(20.6), respectively.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 00:57:16