Metal β-diketone complexes. Part VII. Some reactions of the acid complexes HPt(acac)2X (X = Cl or Br)
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Abstract:
The reactions of the acid complexes HPt(acac)2X (X = Cl or Br) with a range of mono- and bi-dentate ligands have been investigated. Three main types of complex have been isolated: PtX(acac)L, containing an O-bonded acetylacetone (acac) and a monodenate ligand (L), PtCl(acac)L′ containg a C-bonded acetylacetone and a bidentate ligand L′, and Pt2Cl2(acac)2(diolefin) containing bridging diolefins. The i.r. spectra (400–4000 cm.–1) are reported and are consistent with the suggested structures. Mass spectra and n.m.r. spectra are also reported where appropriate and are discussed in terms of the suggested structures.Keywords:
Acetylacetone
Diketone
Dibenzoylmethane
Dibenzoylmethane
Acetylacetone
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Copper(11) complexes of the type [CuAB]O, where A and B are the β-diketones acetylacetone (Hacac), trifluoroacetylaoetone (Htfa), hexafluorylacetylaoetone (Hhfa), thenoyltrifluoroacetone (Htta), or benzoylacetone (Hbza), have been prepared and investigated. The compounds Cu(acac)(tta), Cu(acac)(bza), Cu(tfa)(tta), Cu(tfa)(bza), Cu(hfa)(tta), Cu(hfa)(bza), and Cu(tta)(bza) are described for the first time. They have been investigated by physicochemical methods and are discussed in the light of recently reported findings on Cu(aoac)(tfa), Cu(acac)(hfa), and Cu(tfa)(hfa). However, it must be pointed out that these complexes may possibly be mixtures of mostly [CuAB]0 with slight yet equal amounts of CuA2 and CuB2.
Acetylacetone
Thenoyltrifluoroacetone
Diketone
Dibenzoylmethane
Organometallic Chemistry
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Acetylacetone
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Acetylacetone
Dibenzoylmethane
Indazole
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Abstract The three series of complexes (I)‐(III) are prepared by reaction of a mixture of two ligands with CoCO 3 by a known method.
Dibenzoylmethane
Acetylacetone
Characterization
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Acetylacetone
Dibenzoylmethane
Thenoyltrifluoroacetone
Diketone
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Abstract The gas-chromatographic behavior of aluminum(III), gallium(III), and indium(III) chelates with various β-diketones was investigated. The β-diketones studied were acetylacetone and 8 synthesized, alkyl-substituted acetylacetones, benzoylacetone, dibenzoylmethane, trifluoroacetylacetone and its 5 synthesized alkyl derivatives, hexafluoroacetylacetone, benzoyltrifluoroacetone, furoyltrifluoroacetone, and thenoyltrifluoroacetone. The trifluoromethyl group increases the volatility of the chelates, while the aromatic group tends to decrease the volatility. In the alkyl-substituted acetylacetone series, the retention time of the chelates increases with an increase in the molecular weight, but it does not depend upon the volatility. On the other hand, the retention of the chelates containing the trifluoromethyl group is almost inversely correlated with the volatility.
Acetylacetone
Dibenzoylmethane
Diketone
Thenoyltrifluoroacetone
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Acetylacetone
Dibenzoylmethane
Diketone
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Dibenzoylmethane
Acetylacetone
Characterization
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The reactions of zirconium isopropoxide with acetylacetone, benzoylacetone, dibenzoylmethane, and ethyl benzoylacetate have been studied and a number of new derivatives of the type M(OPri)4–xLx(where M = Zr, L = acetylacetone, benzoylacetone, dibenzoylmethane, or ethyl benzoylacetate, x= 1–4) have been isolated. These derivatives interchange their isopropoxy- for t-butoxy-groups when heated under reflux with t-butyl alcohol. Structures of these derivatives have been discussed on the basis of analysis, molecular weight, and i.r. spectral studies.
Dibenzoylmethane
Acetylacetone
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