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Lesson 960 of 1524

Conjugated Compounds and Ultraviolet Spectroscopy

A conjugated diene or other compound is one that contains alternating double and single bonds.

Practice this chapter

A conjugated diene or other compound is one that contains alternating double and single bonds. Only the two bonding orbitals are occupied; the two antibonding orbitals are unoccupied.

The unsaturated compounds we’ve looked at previously have had only one double bond, but many compounds have numerous sites of unsaturation, which gives them some distinctive properties. Many such compounds are common in nature, including pigments and hormones

two bonding orbitals — occupied; the two antibonding orbitals are unoccupied. conjugated diene or other compound — one that contains alternating double and single bonds.

Worked example

What does “two bonding orbitals” mean in Conjugated Compounds and Ultraviolet Spectroscopy?

  1. 1Use the wording this chapter gives for two bonding orbitals.
  2. 2The book says: occupied; the two antibonding orbitals are unoccupied.
  3. 3Do not use the meaning of conjugated diene or other compound. That term means one that contains alternating double and single bonds.

Result: occupied; the two antibonding orbitals are unoccupied

Why. That is the meaning this chapter gives for two bonding orbitals.

Do not swap two bonding orbitals and conjugated diene or other compound. two bonding orbitals means occupied; the two antibonding orbitals are unoccupied. conjugated diene or other compound means one that contains alternating double and single bonds.

Practice margin

This chapter

A fresh set from this chapter only. Choose 10 or 20. Multiple choice and fill-in, with no repeat inside the set.