{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

lec 3 - Structural Formulas Chem 221 Wednesday July 13 2011...

Info icon This preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
Structural Formulas Chem 221 Wednesday July 13, 2011
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
The Structural Theory of Organic Chemistry Number of covalent bonds usually formed by some elements typically encountered in organic compounds Element # of covalent bonds Element # of covalent bonds H 1 F 1 C 4 Cl 1 N 3 (or 4) Br 1 O 2 I 1
Image of page 2
Thus C is tetravalent O is divalent H and halogens are monovalent
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Important: Do not draw any structure with more than 4 bonds on a carbon
Image of page 4
3 bonds on carbon need a charge on carbon
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Oxygen Usually divalent
Image of page 6
Lone pair electrons on oxygen can donate electrons to a Lewis acid 3 bonds on oxygen (with a positive charge on oxygen) empty p-orbitals
Image of page 7

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
One bond on oxygen Usually need a negative charge on oxygen
Image of page 8
How to Interpret and Write Structural Formulas
Image of page 9

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Representations of Structural Formulas There are a number of ways to write structural formulas. Each conveys some idea or information about the structure.
Image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern