| The system 14 / [ { Ni ( L ( O ) S ( 2 ) N ( 2 ) ) } M ( SCH ( 2 ) CH ( 2 ) PPh ( 2 ) ) ] ( + ) results in cleavage of the dinuclear complex and formation of [ { Ni ( L ( O ) S ( 2 ) N ( 2 ) ) } Fe ( 4 ) S ( 4 ) ( LS ( 3 ) ) ] ( 18 ) , in which the Ni ( 2 ) complex binds at the unique cluster site with formation of a Ni ( mu ( 2 ) SR ) ( 2 ) Fe bridge rhomb . ^^^ |