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首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >Synthesis, electronic spectra and solvent-induced reversible dissociation of diphosphine(hexafluoroacetylacetonato)copper(I) complexes
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Synthesis, electronic spectra and solvent-induced reversible dissociation of diphosphine(hexafluoroacetylacetonato)copper(I) complexes

机译:二膦(六氟乙酰丙酮基)铜(I)配合物的合成,电子光谱和溶剂诱导的可逆离解

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摘要

The complexes Cu-I(P-P)(hfac) with P-P = 1,2-bis(diphenylphosphino)ethane (diphos), 1,3-bis(diphenylphosphino)propane (prophos), 2,2'-bis(dif)henylphosphino)-1,1'-binaphthyl (binap) and hfac = hexafluoroacetylacetonate were synthesized and spectroscopically characterized. In the solid state or in solutions of non-polar solvents these compounds are yellow owing to a long-wavelength (hfac(-) --> P-P) ligand-to-ligand charge transfer absorption. In coordinating solvents such as CH3CN the complexes undergo a reversible dissociation according to the equation: Cu(P-P)(hfac) + nCH(3)CN reversible arrow [Cu(P-P)(CH3CN)(n)](+)hfac(-). While the complexes are not luminescent the ion pairs [Cu(P-P)(CH3CN),](+)hfac(-) are emissive at 77 K. The cations and the anions show separate emissions as indicated by the excitation spectra. [References: 26]
机译:Cu-I(PP)(hfac)与PP = 1,2-双(二苯基膦基)乙烷(diphos),1,3-双(二苯基膦基)丙烷(丙氧基),2,2'-双(dif)亚苯基膦基的配合物)-1,1'-联萘基(binap)和hfac =六氟乙酰丙酮酸酯,并进行了光谱表征。在固态或非极性溶剂的溶液中,由于长波长(hfac(-)-> P-P)的配体到配体电荷转移吸收,这些化合物呈黄色。在配位溶剂(如CH3CN)中,配合物根据以下方程式进行可逆离解:Cu(PP)(hfac)+ nCH(3)CN可逆箭头[Cu(PP)(CH3CN)(n)](+)hfac(- )。尽管复合物不发光,但离子对[Cu(P-P)(CH3CN),](+)hfac(-)在77 K下发射。阳离子和阴离子显示出单独的发射,如激发光谱所示。 [参考:26]

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