in neat (no solvent) heating (160°C);

in further solvent(s) ligand exchange reaction in diethylbenzene; at 120-135°C for 1-2 d;;

in benzene byproducts: 1,5-, 1,4- and 1,3-COD, cyclooctene; thermal decompn. of Co complex; reacting at 50°C for 18 h; distn. at 80-100°C/0.0001 Torr; not separated;

in further solvent(s) equimolar mixture was heated in diethylbenzene at 135°C for 24 h; inert atm.; evapn., chromy. (alumina column, petroleum ether, then benzene/chloroform);

in diethyl ether Irradiation (UV/VIS); stoich. amts., 150-W medium pressure Hg-lamp (10 h); evapn., chromy. (Al2O3, pentane/ether=20:1), recrystn. (pentane); elem.anal.;

in water 0°C;;

in tetrahydrofuran; water; pentane under N2, CoBr2*DME, LiCp, CoCp2 and COD mixed in THF in molar ratio of2/2.06/0.5/1.16, warmed to room temp. during 3 h, evapd., pentane ext. passed through Al2O3/4percent H2O and CuCl powder; concd., cooled to -80°C, CpCoCOD filtered off; CuCl washed with water, CoCp2(1+) pptd. with BPh4(1-) from aq. soln., filtered off; pentane-insol. residue treated with water, Co and CoO mixt. filtered, Co(2+) determined complexometrically;