Аннотация:The title compd. (I) was prepd. by reaction of UCl4 with the di-K salt of methylcyclooctatetraene, and the IR and electronic spectra of I were described. The heat of sublimation of I (520-620 K) was 86.53 kJ/mol. Above 620 K I was unstable. The properties of I were compared with those of uranocene.