Studies of tetravalent acetylacetonato complexes—II. Species formed in two-phase systems as indicated by the use of the regular solution concept

Allard, Bert

doi:10.1016/0022-1902(77)80592-7

Cited by 4 publications

(1 citation statement)

References 14 publications

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“…Determination of the exact structure of the skin-forming species is outside the scope of this paper, but certain directions may be stipulated. The sensitivity of [Zr(acac) 4 ] to hydrolysis has been suggested in the past, even at a water–organic interface, but no attempts were made to identify the hydrolysis products. Remarkably, this sensitivity was not reported in the numerous extraction studies of later date.…”

Section: Resultsmentioning

confidence: 99%

Interfacial Activity of Metal β-Diketonato Complexes: In Situ Generation of Amphiphiles by Water Coordination

et al. 2011

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Symmetric transition metal complexes of 2,4-pentanedione (acetyl acetone) are interfacially active: Spinning drop tensiometry reveals lowering of the interfacial tension at the water-organic interface, most pronounced for [Cr(acac)(3)], [Fe(acac)(3)], [Zr(acac)(4)], and [Hf(acac)(4)]. The interfacial activity is explained by the in situ generation of amphiphilic species. Based on tensiometry and (1)H and diffusion-ordered NMR spectroscopy (DOSY NMR), hydrogen bonding of the organically dissolved complexes with water, in some cases in combination with inner-sphere hydrolytic coordination, is identified as the primary origin of this amphiphilicity. The complexes are a rare example of symmetric molecules that turn amphiphilic only upon interfacial interaction with water.

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Section: Resultsmentioning

confidence: 99%

Interfacial Activity of Metal β-Diketonato Complexes: In Situ Generation of Amphiphiles by Water Coordination

et al. 2011

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Solvation of molybdenum(O)-diimine-tetracarbonyl complexes

Ali

Burgess

1993

Transition Met Chem

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Solubilities of molybdenum(O)-diimine-tetracarbonyl complexes containing pyridyl-primary amine Schiff base or substituted 1,4-diazabutadiene ligands are reported, for a variety of non-aqueous solvents, and for toluene + heptane, toluene + methanol, and methanol-rich methanol + water mixed solvents. Enthalpies and entropies of solution for several of these complexes in a selection of solvents have been derived from temperature variation of solubilities. These results, together with new data on solvent effects on infrared and n.m.r. (1H, 13C, 95Mo) spectra and published data on solvatochromism of this family of compounds, are discussed in relation to solvation of these complexes in pure and mixed solvents.

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Liquid-liquid partition and aqueous phase hydration of beryllium β-diketonates

Narbutt

1981

Journal of Inorganic and Nuclear Chemistry

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Studies of tetravalent acetylacetonato complexes—II. Species formed in two-phase systems as indicated by the use of the regular solution concept

Cited by 4 publications

References 14 publications

Interfacial Activity of Metal β-Diketonato Complexes: In Situ Generation of Amphiphiles by Water Coordination

Interfacial Activity of Metal β-Diketonato Complexes: In Situ Generation of Amphiphiles by Water Coordination

Solvation of molybdenum(O)-diimine-tetracarbonyl complexes

Liquid-liquid partition and aqueous phase hydration of beryllium β-diketonates

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