An ionic liquid bonded polysiloxane(PSOIL) was prepared through the reaction between 1-methylimidazole and γ-chloropropyl-polysiloxane and used as gas chromatography stationary phase for the first time. The column efficiency was 3200 plates/m after being conditioned at 210 ℃. Grob reagent,aromatic isomers and homologous series were employed to evaluate the selectivity of the column. The results demonstrate that the PIL stationary phase exerted good selectivity and high separation efficiency.
The title compound,{Co[(C 2H 5) 2NCS 2] 3},has been prepared and its structure is determined by X ray diffraction with crystallographic data as follows:C 15 H 30 N 3S 6Co,Mr=503.7,monoclinic,space group C 2/c,a=14.105(2),b=10.299(3),c=17.059(3)?,β=110.15(1)°,V=2326.5? 3,Z=4,D c=1.466g/cm 3,μ=7.77cm -1 ,F(000)=1056,R=0.033,R W=0.04.
At room temperature, dibenzoyl peroxide undergoes oxidative addition reaction with metallic copper powder and 4 dimethylamine pyridine which affords the last products as binuclear copper?complex (1), [Cu(C6H5COO)2(C7H10N2)]2. This complex is further characterized by spectroscopic methods. The structure of complex (1) has been determined by a single crystal X ray analysis. Crystallographic data are as follows: monoclinic, space group P21/n, a=10.446(2)?, b=11.140(5)?, c=17.179(3)?, β=95.92(3)°, V=1988.4(7)?3, Z=4, F(000)=884, μ=11.27cm-1, D(calcd.)=1.429g·cm-3, R=0.0399, Rw=0.1202. Each copper?ion is coordinated by two bridging bidentate benzoate and 4 dimethylamine pyridine to form dimeric molecule. CCDC: 188744.
