Johannes Thiele (chemist)

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Friedrich Karl Johannes Thiele (May 13, 1865 – April 17, 1918) was a German chemist and a prominent professor at several universities in Munich and Strasbourg, he discovered many laboratory techniques related to isolation of organic compounds. In 1917 he invented a device for determining melting point named Thiele tube after him.

[edit] Early days

Thiele was born in Ratibor, Germany, now Racibórz, Poland.

[edit] Contributions to organic chemistry

Johannes Thiele was ahead of his time in organic chemistry. After Kekulé's proposal for benzene structure in 1865, he predicted the resonance that existed in benzene in 1899 and proposed a resonance structure, by using a broken circle to represent the partial bonds.