摘要
There were synthesized two new kinds of bis（alkyl-cyclopentadienyl） nickel where the alkyls were n-butyl and benzyl. These two compounds are more sensitive to air than the unsubstituted bis（cyclopentadienyl） nickel itself. Bis（n-butyl-cyclopentadienyl） nickel had the main UV absorption bands at 15,000 cm-1 and 31,500 cm-1. The former band could be assigned to the
