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About This Simulation
Learn the theory behind one of the key phenomena in organic chemistry known as molecular resonance. Observe how the electrons in a molecule can delocalize in the structure and relate molecular resonance to systems with conjugated double bonds.
Learning Objectives
- Define what a conjugated system is and recognize atoms that are part of a conjugated system
- Explain, with examples, why charge delocalization stabilizes molecules
- Give examples of molecular motifs that can establish electron delocalization
About This Simulation
Lab Techniques
- Molecular Resonance
Related Standards
- US College Year 1
- US College Year 2
Learn More About This Simulation
Electrons like to travel! In this simulation, you will learn about molecular resonance in organic compounds. Learn about why electron delocalization is possible through example molecular motifs and relate the phenomena to conjugated systems.
Identifying a conjugated system
What makes a conjugated system? Identify conjugation in organic molecules by acknowledging the characteristics of a conjugated double bond compared to an isolated double bond. Acknowledge the idea that conjugation and hence, molecular resonance are allowed by an extended p-orbital hybridization in planar structures. Not only will you be able to understand how to identify a conjugated structure, you will also be able to appreciate that not all atoms in an organic molecule participate in a conjugated system. You will be able to determine which atoms partake in the conjugated system.
Resonance Structures
Take advantage of our cutting edge hologram technology to form resonance structures by moving around the electrons within the structure. Observe 3D models of the molecules and p-orbital hybridization to understand how electron delocalization and hence the formation of resonance structures is possible. Observe how the mechanisms are drawn for these structures and understand how they can show the reactivity properties of certain functional groups.
Bond rotation
Finish off the topic by observing the 3D molecule of hexatriene with the carbon atom p-orbitals visible on the structure. Observe how rotation around single bonds can give rise to various conformations of a structure and how it can disrupt a conjugated system.
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For Science Programs Providing a Learning Advantage
North Dakota State College of Science
“They did the simulation at home, then completed the in-person lab within 30 minutes, no questions asked, and passed the quiz with flying colors.”
Lecturer in Human Physiology
University of Westminster
"I saw some of the students who clearly didn’t necessarily like sitting there reading a book discover they could turn on Labster and keep up with the rest of the class because it spoke to them.
Modesto City Schools
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Wenatchee Valley College
"The question always is, ‘Can we demonstrate that the students are meeting course outcomes?’ Check! We can do that.”
San José State University
"We surveyed over 400 students. More than 90% thought Labster was easy to navigate, and that it was fun, but more importantly, most of them felt confident that they could execute the labs in person. And that confidence is a big deal."
FAQs
Find answers to frequently asked questions.
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