Conrad Laar Explained

Conrad Laar
Birth Date:1853 3, df=y
Birth Place:Hamburg, Germany
Death Place:Bonn Germany
Work Institution:Universität Bonn
Known For:coining the expression tautomerism
Prizes:Nobel prize

Conrad Peter Laar (22 March 1853 – 11 February 1929) was a German chemist.[1] He coined the expression tautomerism in 1885.[2] He also observed the double bond rule in 1885, stating elements with a principal quantum number greater than 2 for their valence electrons (period 3 elements and higher) tend not to form multiple bonds.[3]

Notes and References

  1. 10.1002/ange.19290424902 . Conrad Laar (1853 - 1929) . Pfeiffer . Angewandte Chemie . 42 . 49 . 1117 . 1929. free . 1929AngCh..42.1117P .
  2. 10.1002/cber.188501801141 . Ueber die Möglichkeit mehrerer Strukturformeln für dieselbe chemische Verbindung . 1885 . Laar . Conrad . Berichte der Deutschen Chemischen Gesellschaft . 18 . 648–657.
  3. 10.1021/ed075p596 . A History of the Double-Bond Rule . Bernard E. Hoogenboom . ACS Publications . 1 . 1998 . 75 . 5 . free . 1998JChEd..75..596H .

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