The chemistry of bis(3,5-dimethylpyrazolyl)methane complexes of copper(I) has been investigated and a dinuclear copper(I) derivative of formula {Cu2[l-CH2(3,5-Me2Pz)2]2}(TfO)2 [TfO = trifluoromethanesulphonate anion, CF3SO 3 ], characterized by an uncommon bridging coordination of the bis(pyrazolyl)methane ligands, has been isolated and characterized by X-ray diffraction methods. Moreover, new olefin derivatives of general formula [Cu[CH2(3,5-Me2Pz)2](olefin)]TfO have been prepared (olefin: coe = cyclooctene, van = 4- vinylanisole, nbe = norbornene), their carbonylation reactions, {Cu[CH2(3,5-Me2Pz)2](olefin)}TfO + CO ¡ {Cu[CH2(3,5-Me2Pz)2]- (CO)}TfO + olefin, have been studied gas volumetrically and the thermodynamical parameters of the equilibria for the displacement of the coordinated olefin by carbon monoxide have been determined.
Synthesis of Copper(I) bis(3,5-dimethylpyrazolyl)methane olefin complexed and their reactivity towards carbon monoxide
PAMPALONI, GUIDO;
2006-01-01
Abstract
The chemistry of bis(3,5-dimethylpyrazolyl)methane complexes of copper(I) has been investigated and a dinuclear copper(I) derivative of formula {Cu2[l-CH2(3,5-Me2Pz)2]2}(TfO)2 [TfO = trifluoromethanesulphonate anion, CF3SO 3 ], characterized by an uncommon bridging coordination of the bis(pyrazolyl)methane ligands, has been isolated and characterized by X-ray diffraction methods. Moreover, new olefin derivatives of general formula [Cu[CH2(3,5-Me2Pz)2](olefin)]TfO have been prepared (olefin: coe = cyclooctene, van = 4- vinylanisole, nbe = norbornene), their carbonylation reactions, {Cu[CH2(3,5-Me2Pz)2](olefin)}TfO + CO ¡ {Cu[CH2(3,5-Me2Pz)2]- (CO)}TfO + olefin, have been studied gas volumetrically and the thermodynamical parameters of the equilibria for the displacement of the coordinated olefin by carbon monoxide have been determined.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
