Section 14 - Aromatic Compounds and Aromaticity

Aromatic Compounds and Aromaticity -- Section 14 of Organic Chemistry Notes is 11 pages in length (page 14-1 through page 14-11) and covers ALL you'll need to know on the following lecture/book topics:

SECTION 14 – Aromatic Compounds and Aromaticity

14-1 -- Definition of Aromaticity
  · Cyclic, Planar, Fully Conjugated Array of p-Orbitals
  · Huckel’s Rule (“4n + 2”)
14-1 -- Benzene and its Derivatives
  · Very Unreactive
  · How Stable is Benzene?
  · Hydrogenation of Benzene (Addition of H2)
  · Benzene Stability Explained by “Model 1” and “Model 2”
  · Resonance Energy (or “Aromatic Stabilization Energy”)
  · Napthalene and Phenanthrene as Examples
14-3 -- Compounds with Planar, Conjugated, Cyclic Arrays of “4n” π-Electrons
  · Antiaromatic Compounds
  · Extremely Unstable; Very Reactive
14-4 -- Benzene Derivatives that are Neither Aromatic nor Antiaromatic
14-5 -- More Examples of Aromatic Compounds
  · “4n + 2”
  · Re-Hybridization of sp3-orbital --> sp2-orbital
14-7 -- More Examples of Antiaromatic Compounds
  · “4n”
14-7 -- Spectroscopy of Benzene
  · UV-Vis Spectroscopy of Benzene
  · IR Spectroscopy of Benzene
  · 1H NMR Spectroscopy of Benzene
  · Coupling – in 1H NMR
  · 1,4-Disubstituted vs. 1,2-Disubstituted vs. 1,3-Disubstituted Benzenes
14-9 -- Nomenclature of Substituted Benzenes
  · Monosubstituted Benzenes (Common Names are Used)
  · Disubstituted Benzenes – Ortho (o), Meta (m), and Para (p)
  · Use of Monosubstituted Benzenes as “Principal Structures” in Nomenclature
  · Xylenes = Dimethyl Substituted Benzenes

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