1969
DOI: 10.1016/s0010-8545(00)80090-9
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Divalent transition metal β-keto-enolate complexes as lewis acids

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Cited by 212 publications
(7 citation statements)
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“…While the m -xylylene bridged system was too small to incorporate a guest molecule within the cavity, the 2,7-naphthylidenediylbis(methylene) bridged complex 1 showed a significantly larger cavity. Addition of Lewis bases resulted in equilibrium constants for binding of pyridine ( K = 0.5 L/mol), pyrazine ( K = 5 L/mol), and quinuclidine ( K = 7 L/mol) to complex 1 comparable to those in the literature for binding to Cu(acac) 2 . While these results did not speak for an internal bridging, the much larger equilibrium constants for diazabicyclo[2,2,2]octane ( K = 220 L/mol) showed selective internal binding.…”
Section: Potential Applications For Metal-based Polygons and Polyhedrasupporting
confidence: 54%
“…While the m -xylylene bridged system was too small to incorporate a guest molecule within the cavity, the 2,7-naphthylidenediylbis(methylene) bridged complex 1 showed a significantly larger cavity. Addition of Lewis bases resulted in equilibrium constants for binding of pyridine ( K = 0.5 L/mol), pyrazine ( K = 5 L/mol), and quinuclidine ( K = 7 L/mol) to complex 1 comparable to those in the literature for binding to Cu(acac) 2 . While these results did not speak for an internal bridging, the much larger equilibrium constants for diazabicyclo[2,2,2]octane ( K = 220 L/mol) showed selective internal binding.…”
Section: Potential Applications For Metal-based Polygons and Polyhedrasupporting
confidence: 54%
“…Nature of the Active Catalyst. In the solid state, the Co(II) and Ni(II) bis(acetylacetonate) are respectively tetrameric and trimeric, while Cu(II) is monomeric . In solution in noncoordinating solvents, the oligomeric structures are in equilibrium with monomeric species.…”
Section: Resultsmentioning
confidence: 99%
“…In the presence of a Lewis base, the cobalt and nickel acetylacetonates exist as the labile monomers trans-M(acac),L, (M = Co, Ni; L = Lewis base) (12). work an alcohol, the proton resonances of L shift towards the resonance positions of the complex Co(acac),L,.…”
Section: Discussionmentioning
confidence: 99%