Organic Chemistry, 5th Edition nENEs L.G. Wade jr Chapter 15 Conjugated Systems Orbital Symmetry, and Ultraviolet Spectroscopy Jo blackburn Richland college, dallas TX Dallas County Community College District c 2003. Prentice hallChapter 15 Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy Jo Blackburn Richland College, Dallas, TX Dallas County Community College District © 2003, Prentice Hall Organic Chemistry, 5th Edition L. G. Wade, Jr