Hückel or Huckel may refer to:
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Erich Hückel (1896-1980), German physicist and chemist
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Debye–Hückel equation (named after Peter Debye and Erich Hückel), in chemistry, a method of calculating activity coefficients
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Hückel method (named after Erich Hückel), a method for the determination of energies of molecular orbitals
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Extended Hückel method, considers also sigma orbitals (whereas the original Hückel method only considers pi orbitals)
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Hückel's rule
In organic chemistry, Hückel's rule predicts that a planar ring molecule will have aromatic properties if it has 4''n'' + 2 π electrons, where ''n'' is a non-negative integer. The quantum mechanical basis for its formulation was f ...
(named after Erich Hückel), a method of determining aromaticity in organic molecules
* (1895-1973), German chemist
* (born 1936), German diplomat, Ambassador of the GDR in Chad
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