Chemistry:Grimm's hydride displacement law
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Grimm's Hydride Displacement Law is an early hypothesis, formulated in 1925, to describe bioisosterism, the ability of certain chemical groups to function as or mimic other chemical groups.[1][2]
- “Atoms anywhere up to four places in the periodic system before an inert gas change their properties by uniting with one to four hydrogen atoms, in such a manner that the resulting combinations behave like pseudoatoms, which are similar to elements in the groups one to four places respectively, to their right.”[3]
According to Grimm, each vertical column (of Table below) would represent a group of isosteres.
| C | N | O | F | Ne | Na |
| CH | NH | OH | FH | - | |
| CH2 | NH2 | OH2 | FH2+ | ||
| CH3 | NH3 | OH3+ | |||
| CH4 | NH4+ |
References
- ^ Grimm, H. G. Structure and Size of the Non-metallic Hydrides Z. Electrochem. 1925, 31, 474–480.
- ^ Grimm, H. G. On the Systematic Arrangement of Chemical Compounds from the Perspective of Research on Atomic Composition; and on Some Challenges in Experimental Chemistry. Naturwissenschaften 1929, 17, 557–564.
- ^ Patani, G. A.; LaVoie, E. J. Bioisosterism: A Rational Approach in Drug Design. Chem. Rev. 1996, 96, 3147–3176. (doi:10.1021/cr950066q PMID 11848856)
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