Complex sentence: Since the early 1960s ferrocene has been gaining acceptance as the standard reference for nonaqueous work for a number of reasons, and in 1984, IUPAC recommended ferrocene (II/III) as a standard redox couple.
Split into simpler sentences: Since the early 1960s ferrocene has been gaining acceptance as the standard reference for nonaqueous work for a number of reasons. In 1984 IUPAC recommend ferrocene (II/III) as a standard redox couple.