... Chem. ... methyl)ethane]dicobalt(II) Bis(tetraphenylborate [1(BPh 4 ) 2 ]. This compound was prepared either by the procedure of Sacconi et al. ... The preparation was similar to the one described above except for substituting NaBPh 4 with NaPF 6 . Recrystallization from THF/Et 2 O ...