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Karl-Friedrich Bonhoeffer

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Karl-Friedrich Bonhoeffer

Karl Friedrich Bonhoeffer
May 1928 at Munich
Born January 13, 1899
Breslau, German Empire
Died May 15, 1957(1957-05-15) (aged 58)
Göttingen, West Germany
Residence Germany
Nationality German
Institutions Kaiser-Wilhelm-Institut for Physical and Electrochemistry,
University of Leipzig,
University of Berlin,
Max Planck Institute for Biophysical Chemistry, University of Leipzig
Alma mater University of Tübingen,
University of Berlin
Doctoral advisor Walther Nernst,
Fritz Haber
Doctoral students Heinz Gerischer, Albert Neuberger
Known for Spin isomers of hydrogen: orthohydrogen and parahydrogen

Karl Friedrich Bonhoeffer (13 January 1899 – 15 May 1957) was a German chemist.


Born in Breslau, he was an older brother of martyred theologian Dietrich Bonhoeffer.

Bonhoeffer studied from 1918 in Tübingen and Berlin, finishing his PhD in 1922 in Berlin with Walther Nernst. From 1923 to 1930 he was an assistant with Fritz Haber at Kaiser Wilhelm Institute for Physical Chemistry and Elektrochemistry in Berlin Dahlem. After the Habilitation in 1927, he became full professor at the University of Berlin. In 1930, Bonhoeffer was appointed a professor of Physical Chemistry at the University of Frankfurt. Four years later, he was appointed a professor of Physical Chemistry at the University of Leipzig. He became a professor for physical chemistry at the University of Berlin in 1947

Bonhoeffer was also director of the Kaiser Wilhelm Institute for physical and electrochemistry (now the Fritz Haber Institute of the MPG).

In 1949, he was appointed director of the Max Planck Institute for Physical Chemistry in Göttingen. The institute was restructured long after his death in 1971 and is now the Max Planck Institute for Biophysical Chemistry in Göttingen, also known as the Karl Friedrich Bonhoeffer Institute. In 1929 Bonhoeffer, together with Paul Harteck, discovered the spin isomers of hydrogen, orthohydrogen and parahydrogen.

He died in Göttingen in 1957 at the age of 58.


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