2 3 dimethylpentane newman projection

Consider 2,3-dimethyl pentane. Sighting along the

Answer

more stable beause all the substitutents are as far as possible CH the energy because of ethyl also consider as a methyl CH3 2 x methyl methyk gauche interactions 3 2 x 3.87.6k/mol least stable all the substituents are in eclipsed and bulky groups are very close H2C H3C 2 x CH3-CH3 eclipsing, one H-H eclipsing 2x 11+ 1x4 22+4-26 ki/mol

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