in tetrahydrofuran placing of (C5H5)Fe(C5H4CH(CH3)C7H5N2) in one-neck flask, addn. of THF, reflux for 15 h in air; cooling, chromy. using dimethyl ether as eluent;

HCl; NH3 in ethanol; water byproducts: C7H6N2; dissolving of (C5H5)Fe(C5H4CH(CH3)C7H5N2) in ethanol on heating, addn. of soln. of 1,2,4-triazole in H2O and concd. HCl; reflux for 2.5 h, cooling, neutralizing with aq. ammonia; extn. with dimethyl ether; sepn. of org layer, TLC chromy. using hexane,benzene and then methanol as eluents;