New complexs combinations [K(LH)] [ReX6], (LH)2[ReX6] və [ReL2X4]H2O (L-lucien ; X=CI –,Br–) of rhenium (IV) with lucien (( CH3)2– CH- CH2– CH(NH2)-(COOH)) in different media have been synthesized.Using methods of chemical, ESP, IR-spectral and thermogravimetric analysis the composition and structure of obtained complexes established. Thermogravimetric studies showed that complexes are decomposed without melting and in all cases the metallic rhenium is a final product of thermal decomposition.