for the following products
Bis(cyclopentadienyl)zirconium bis(trifluoromethanesulfonate)tetrahydrofuran adduct | bis-(Cyclopentadienyl)zirconium(IV) bis(trifluoromethanesulfonate)tetrahydrofuran complex and Zirconocene bis-(trifluoromethanesulfonate), tetrahydrofuran adduct