Acetonitrile Complex Cations with Triflate Anions

METAL ACETONITRILE COMPLEX CATIONS WITH TRIFLATE ANIONS 

Acetonitrile is refluxed over 3-A molecular sieves and further dried by elution from an activated alumina column. 

08 mmol)-Co (0.257 g, 0.720 mmol)-Ni (0.731 g, 2.05 mmol) is added to a dry 250-mL round-bottomed Schlenk flask and treated with 150 mL of acetonitrile for 12 h. The volume of the solution is reduced to 5 mL under vacuum and the product is precipitated by the addition of diethyl ether (40 mL). The solution is removed via cannula, and the solid is dried under vacuum, redissolved in 20 mL acetonitrile, and finally filtered through a medium-porosity Schlenk frit to remove minor decomposition products carried over from the M(03SCF3)2 precursors. The solution is reduced to 5 mL under vacuum and precipitated by the addition of 40 mL of diethyl ether. The colors and typical yields are 0.917 g (55%) for the white Mn product, 0.326 g (50%) for a white/off-white Fe product, 0.255 g (59%) for a pink-peach Co solid, and 0.873 g (71%) for a blue Ni compound. The products are exceedingly moisture-sensitive. 

TABLE I. UV-Visible, Magnetic Susceptibility and Infrared Data for 

Hein and S. Herzog, in Handbook of Preparative Inorganic Chemistry, Vol. 2,2nd ed., G. Brauer (Ed.), Academic Press, London, 1965. 

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H. METAL ACETONITRILE COMPLEX CATIONS WITH TRIFLATE ANIONS... 

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