Which of the following is false?Select answer from the options belowcis-2-butene and trans-2-butene are stereoisomers The C-C-C-C dihedral angle in cis-2-butene is 0o There is not free rotation about a C=C bond The pi-bond in cis-2-butene is the result of overlapping sp2-type orbitals
Question
Which of the following is false?Select answer from the options belowcis-2-butene and trans-2-butene are stereoisomers The C-C-C-C dihedral angle in cis-2-butene is 0o There is not free rotation about a C=C bond The pi-bond in cis-2-butene is the result of overlapping sp2-type orbitals
Solution
The false statement is: "The C-C-C-C dihedral angle in cis-2-butene is 0o".
In cis-2-butene, the dihedral angle between the two carbon-carbon bonds is not 0 degrees. Instead, it is approximately 120 degrees due to the trigonal planar geometry around each carbon atom in the double bond. The term "dihedral angle" refers to the angle between two planes, and in this case, it is the angle between the planes formed by the two carbon-carbon bonds. In a cis isomer, the substituents are on the same side of the molecule, which results in a dihedral angle of about 120 degrees, not 0 degrees.
Similar Questions
Which of the following compounds will exhibit cis-trans (geometrical) isomerism ?1-Butanol2-Butene2-Butanol2-Butyne
The number of stereoisomers obtained by bromination of trans-2-butene is
Which statement(s) is/are false? Check all that apply.A π bond restricts rotation about the bond axisBonds formed from the overlap of atomic s orbitals are always σ bondsTwo σ bonds comprise a double bondEnd-to-end overlap of orbitals results in a bond with electron density above and below the bond axisNone of the above
Which of the following isomers is the most stable?Select answer from the options below2-methylpropenecis-2-butene1-butenetrans-2-butene
Statement-I : 2R, 3S-Butane-2, 3-diol and 2S, 3R-Butane-2, 3-diol are enantiomers. Statement-II : Enantiomers are differ in optical rotation
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.