Abstract: The cis, trans(lRS)-3-(2,2, 2-trichloroethyl)-2,2-dimethylcyclopropane earboxylate have been identified by ¹H-NMR obtained in the presence nf LSR Eu(fod)₃. The stereoconf iguration of substituted cyclopropane have been deiermined with coupling constants ³J=5.5Hz (cis) and 4Hz(trans). The observed limiting shifts and MoConell-Robertson equation have been used to determine resoaable molecular geometry parameters of the complex, from which the ratio of pssudocontact constants of the carbonyl groups in the two isomers have been calculated.