| Abstract
| - New fluorinated bis(pyrazolyl)alkanes of general formula RCHPzF2 [R = H, PzF = 3-(trifluoromethyl)pyrazolyl, 3,5-bis(trifluoromethyl)pyrazolyl; R = Ph, PzF = 3,5-bis(trifluoromethyl)pyrazolyl] have been prepared, and their copper complexes with carbon monoxide and alkenes have been studied. The choice of the counteranion (BF4- or OTf -) has proved to be decisive for the preparation of the corresponding silver complexes.
- New fluorinated bis(pyrazolyl)methanes with the general formula RCH(PzF)2 [R = H,PzF = 3-(trifluoromethyl)pyrazolyl, 3,5-bis(trifluoromethyl)pyrazolyl; R = Ph, PzF = 3,5-bis(trifluoromethyl)pyrazolyl] have been prepared, and their reactivity with copper and silver salts has beenstudied. Copper derivatives Cu[RCH(PzF)2](L)(OTf) [R = H, PzF = 3-(trifluoromethyl)pyrazolyl,3,5-bis(trifluoromethyl)pyrazolyl; R = Ph, PzF = 3,5-bis(trifluoromethyl)pyrazolyl, L = CO, cyclooctene(coe); R = Ph, PzF = 3,5-bis(trifluoromethyl)pyrazolyl, L = coe, 4-vinylanisole (van), and triethylvinylsilane (tevs)] have been isolated by reacting Cu(OTf)(toluene)0.5 with the bis(pyrazolyl)methaneligand in the presence of olefin or CO. Some of them have been structurally characterized (R = H, PzF= 3-(trifluoromethyl)pyrazolyl, 3,5-bis(trifluoromethyl)pyrazolyl, L = CO). These compoundsare monomeric and show strong interactions between copper and one oxygen atom of the triflatemoiety. [Bis[3,5-bis(trifluoromethyl)pyrazolyl]methyl]silver complexes have been prepared fromAgBF4 and the ligand. The coe derivative [Ag{CH2(3,5-(CF3)2Pz)2}(coe)]BF4 has been obtained in goodyields.
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