in neat (no solvent) mixt. heating (30-40 min, 120-160°C, distilling flask); exposition to vac. 1.33 hPa; elem. anal.;

in toluene byproducts: H2, (Me3Si)2; argon atmosphere or vac.; heating mixt. of V-complex and org. compd. (molar ratio 1:1) and toluene (evac. ampul, 70-100°C, 30-40 h), evolved hydrogen drawing off, soln. decanting; ppt. suction-filtration off, drying, filtrate transcondensation and chromy. (GLC) leads to org. byproducts; elem. anal.;

T=120 - 160°C;

in toluene byproducts: H2; argon atmosphere or vac.; heating mixt. of V-complex and org. compd. (molar ratio 1:1) and toluene (evac. ampul, 100-110°C, 30-40 h), liquid decanting from ppt.; ppt. washing (hexane); elem. anal., GLC;

in neat (no solvent) mixt. heating (30-40 min, 120-160°C, distilling flask); exposition to vac. 1.33 hPa; elem. anal.;

1.) 100-125 deg C, 10 min, 2.) 140 deg C, 1 h, 3.) 200 deg C, 3 mm Hg, 30 min;