Copper(I) monophosphine complexes with functionalized acylpyrazolonate ligands: Syntheses of heterobimetallic Cu–Zn and Cu–Ru adducts
In: Polyhedron, Jg. 25 (2006-01-02), Heft 1, S. 124-133
Online
academicJournal
Zugriff:
Abstract: Copper(I) acylpyrazolonate derivatives of formula [Cu(Q)(PPh3)2] (HQ=HQC2F5 = 1-phenyl-3-methyl-4-pentafluoropropanoylpyrazol-5-one, HQCF3,CF3 =1-(4-trifluoromethyl)phenyl-3-methyl-4-trifluoroacetylpyrazol-5-one, HQnaph =1-phenyl-3-methyl-4-(1-naphthoyl)pyrazol-5-one, HQfur =1-phenyl-3-methyl-4-furylpyrazol-5-one, HQthi =1-phenyl-3-methyl-4-thienoylpyrazol-5-one, HQCF3,py =1-(2-pyridyl)-3-methyl-4-trifluoromethylpyrazol-5-one) have been synthesized and characterized, both in the solid state and in solution. The isomorphous crystal structures of [Cu(Qfur)(PPh3)2] and [Cu(Qthi)(PPh3)2] and of [Cu(QC2F5)(PPh3)2] show their copper atoms in distorted tetrahedral environments. Apart from the derivative [Cu(Qnaph)(PPh3)2], they are fluxional in chloroform solution, dissociating partially to the [Cu(Q)(PR3)] fragment and free PR3, or existing in solution as [Cu(O2–Q)(PR3)2] or [Cu(O–Q)(PR3)2] species, with CuO2P2 or CuOP2 metal environments, in equilibrium with each other. By contrast, in [Cu(QCF3,py)(PPh3)2] the QCF3,py ligand is coordinated to copper through the nitrogen atoms of the pyrazole and pyridine rings. The latter compound reacts with Zn(BF4)2 · xH2O and [Ru(p-cymene)Cl2]2 affording ionic heterobimetallic adducts. [Copyright &y& Elsevier]
Titel: |
Copper(I) monophosphine complexes with functionalized acylpyrazolonate ligands: Syntheses of heterobimetallic Cu–Zn and Cu–Ru adducts
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Autor/in / Beteiligte Person: | Cingolani, Augusto ; Marchetti, Fabio ; Pettinari, Claudio ; Pettinari, Riccardo ; Skelton, Brian W. ; Somers, Neil ; White, Allan H. |
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Zeitschrift: | Polyhedron, Jg. 25 (2006-01-02), Heft 1, S. 124-133 |
Veröffentlichung: | 2006 |
Medientyp: | academicJournal |
ISSN: | 0277-5387 (print) |
DOI: | 10.1016/j.poly.2005.07.020 |
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