Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Outline Chapters One and Two: Klein Bonding, Electronic Structural Models and Drawing Organic Molecules 1. Introduction to Organic Chemistry 2. What you need to remember from General Chemistry 3. Drawing Lewis Structures a. Octet vs non-octet structures b. e- book-keeping for octet structures: o #bonds = [Need-Have]/2 o Need = # needed for filled shell around each atom (8 or 2 multiplied by # heteroatoms or hydrogen atoms, respectively) o Have = # valence electrons each atom brings to the table 4. Formal Charge Formal Charge= e- gained or lost = (Valence) – (e- “owned” by atom in structure) 5. Resonance a. Atoms are stationary- only e- move b. Energy Consequences c. Relative Importance o # bonds o Octet o Charge on Complimentary Atoms (negative on more electronegative atom) o Minimization of charge separation 6. Drawing Organic Structures a. Bond-line b. Wedge-dash 7. Functional Groups in Organic Chemistry 8. Atomic orbitals a. Unhybridized s, p and d b. Shapes and energies c. Hybridization to sp, sp2 and sp3 9. Formation of Molecular Orbitals a. Shapes and Energies b. Frontier Molecular Orbital Energy Diagrams c. Molecular Orbitals LEARNING OUTCOMES: Gain Appreciation for relevance of Organic Chemistry to everyday experience Draw Organic Molecules using modified Lewis Structures Understand electron distribution in molecules with the concept of Resonance Visualize shapes of simple Organic Molecules Predict Hybridization States Describe Bonding according to Molecular Orbital Theory SAMPLE PROBLEMS: Outline Chapters One and Two: Klein Bonding, Electronic Structural Models and Drawing Organic Molecules 1) A) Complete the following Lewis Structure of neutral CH2N2 including any multiple bonds, non-bonded electrons and formal charges. B) Draw a second valid resonance form. Include non-bonded electrons and formal charges. C) Label each resonance form as a MAJOR, MINOR, or EQUAL contributor to the overall structure. 2) Consider the Molecular Orbital Energy Diagram for acetylene C2H2 below: E To H To H A) Identify the hybridized atomic orbitals in the diagram. Label their positions on the diagram. B) Label each Molecular Orbital whose energy is depicted in the diagram as a , *, or * orbital. C) Tell whether the C2H2+ or C2H2– is more stable. Explain. D) Label the LUMO(s) in the diagram. Outline Chapters One and Two: Klein Bonding, Electronic Structural Models and Drawing Organic Molecules 3) Which of the following best describes the bonding for the indicated bond in the structure below? A) Csp3 + Osp2 B) Csp3 + Osp C) Csp2 + O sp3 D) C sp2 + Osp E) Csp2 + Op