TABLE 15-1 Amax for the Longest-Wavelength UV-Vis Absorptions of a Variety of Organic Compounds Compound Amax (nm) Compound Amax (nm) Compound Amax (nm) Alkanes and <150 cycloalkanes H 161 217 256 Buta-1,3-diene Ethene Cyclohexa-1,3-diene 177 223 274 Hex-1-ene cis-Penta-1,3-diene Hexa-1,3,5-triene 178 223.5 280 Penta-1,4-diene trans-Penta-1,3-diene H H. Methanal (Formaldehyde) 182 224 290 Octa-1,3,5,7-tetraene 2-Methylbuta-1,3-diene (Isoprene) Cyclohexene H.C, 185 239 340 H. Нех-1-yne Cyclopentadiene Propenal (Acrolein) 455 B-Carotene O

TABLE 15-1 Amax for the Longest-Wavelength UV-Vis Absorptions of a Variety of Organic Compounds Compound Amax (nm) Compound Amax (nm) Compound Amax (nm) Alkanes and <150 cycloalkanes H 161 217 256 Buta-1,3-diene Ethene Cyclohexa-1,3-diene 177 223 274 Hex-1-ene cis-Penta-1,3-diene Hexa-1,3,5-triene 178 223.5 280 Penta-1,4-diene trans-Penta-1,3-diene H H. Methanal (Formaldehyde) 182 224 290 Octa-1,3,5,7-tetraene 2-Methylbuta-1,3-diene (Isoprene) Cyclohexene H.C, 185 239 340 H. Нех-1-yne Cyclopentadiene Propenal (Acrolein) 455 B-Carotene O

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter20: Dienes, Conjugated Systems, And Pericyclic Reactions

Section20.3: Uv-visible Spectroscopy

Problem 20.5P

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