Consequently, many chemical reactions of Co(C5H5)2 are characterized by its tendency to lose this "extra" electron, yielding a very stable 18-electron cation known as cobaltocenium.
kˈɑːnsɪkwəntli, mˈɛni kˈɛmɪkəl ɹɪˈækʃənz ʌv kˈoʊ sˈiː fˈaɪv ˈeɪtʃ fˈaɪv tˈuː ɑːɹ kˈæɹɪktɚɹˌaɪzd baɪ ɪts tˈɛndənsi tə lˈuːz ðˈɪs "ˈɛkstɹə" ᵻlˈɛktɹɑːn, jˈiːldɪŋ ɐ vˈɛɹi stˈeɪbəl ˈeɪtiːnᵻlˈɛktɹɑːn kˈæɾaɪən nˈoʊn æz kˌoʊbɐltˈoʊsniəm.