Examlex
Rank the following dienes in order of increasing stability: trans-1,3-pentadiene, cis-1,3-pentadiene, 1,4-pentadiene, and 1,2-pentadiene.
Structure
Refers to the arrangement of atoms within a molecule, including their spatial orientation and any form of bonding or connectivity between them.
C≡C Stretch
A vibrational motion observed in IR spectroscopy, characteristic of the carbon-carbon triple bond stretching.
C≡N Stretch
A spectroscopic term referring to the absorption frequency characteristic of the triple bond between carbon and nitrogen atoms in nitriles, observable in infrared or Raman spectra.
IR Band
A specific frequency range within an infrared spectroscopy spectrum that corresponds to the vibration of molecular bonds, used for chemical identification.
Q12: Is the all-cis form of [10]annulene aromatic?
Q24: Deduce the identity of the compound whose
Q30: In the UV-visible spectra of the following
Q34: Provide the major organic product of the
Q43: When a carbonyl is part of a
Q67: Circle and name the aromatic heterocycles in
Q75: Rank the following compounds in order of
Q91: Provide the structure of the major organic
Q115: Draw the LUMO of pentadienyl cation.
Q123: Which is more basic, pyridine or pyrrole?