100th Birthday Ernst Otto Fischer - Germany / Federal Republic of Germany 2018 - 70 Euro Cent

As a pioneer of organometallic chemistry, Ernst Otto Fischer (1918-2007) built a bridge between the once separate worlds of inorganic and organic chemistry, opening up a completely new field of work. In 1952 he succeeded with Wolfgang Pfab, the spectacular structural elucidation of ferrocene. The researchers confirmed the proposal of the Englishman Geoffrey Wilkinson that it is a metal-carbon compound with a double cone structure, which is subsequently called "sandwich connection" was designated. In 1955, Ernst Otto Fischer and Walter Hafner succeeded in synthesizing dibenzenechromium, which surprised by its thermal stability. The method used was called in their honor "Fischer-Hafner method". Other important key discoveries in the 1960s and 1970s were the metal carbenes and metal carbines, which were named "Fischer Carbenes". His life's work earned Ernst Otto Fischer the Nobel Prize for Chemistry in 1973, which he shared with Geoffrey Wilkinson for her independently performed work.