Abstract: By the thermolysis of di-o-tolylzirconocene and tolane, new zirconoindene complex was obtained with a high yield. The data of elemental analysis, spectra and MS were provided. The acidoly-sis and iodolysis of zirconoindene were studied, By the identifications of the products, the structure of zirconoindene was determined. Because of the high yield and selectivity in the formation and acidolysis of zirconoindene, these reactions are useful in stereo-specific organic syntheses.

Key words: Thermolysis, Zirconoijldene, Metallic cycle