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F. K. Johannes Thiele
(13 May 1865 - 17 Apr 1918)
German chemist who offered a “partial valence” hypothesis to describe a resonance structure for the benzene ring. He devised the Thiele tube used to measure the melting point of a substance.
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Science Quotes by F. K. Johannes Thiele (1 quote)
In the beginning, there was benzene!
[Written over Thiele’s office door. His former student Heinrich Otto Wieland said it expressed Thiele’s disdain for the chemistry of natural products.]
[Written over Thiele’s office door. His former student Heinrich Otto Wieland said it expressed Thiele’s disdain for the chemistry of natural products.]
— F. K. Johannes Thiele
Quoted in R. Huisgen, 'The Wieland Memorial Lecture: Heinrich Wieland', Proceedings of the Chemical Society (1958), 214.
Quotes by others about F. K. Johannes Thiele (1)
…we all had to learn a number of XIXth century rules—such as Markownikov’s rule for addition to olefins, Thiele’s 1:4—addition rules for conjugated systems and Crum Brown’s rule for aromatic substitution. It was just like learning Latin grammar.
Looking back to a time 60 years before, he expressed his dissatisfied with organic chemistry based on rules rather than the understanding he was to make his career. As quoted in obituary by R.O.C. Norman, J.H. Jones, T.M. Lowry and J.F. Duff, Biographical Memoirs of Fellows of the Royal Society (Dec 1986) 32, 601.
See also:
- 13 May - short biography, births, deaths and events on date of Thiele's birth.
In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion.
(1987) -- 
