eclipsed conformation


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eclipsed conformation

[i′klipst ‚kän·fər′mā·shən]
(physical chemistry)
A particular arrangement of constituent atoms that may rotate about a single bond in a molecule; for ethane it is such that when viewed along the axis of the carbon-carbon bond the hydrogen atoms of one methyl group are exactly in line with those of the other methyl group.
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In the eclipsed conformation, close carbon-hydrogen bonds crowd each other, thereby raising the molecule's overall energy.