HOME COURSES PREVIEW REVIEW ABOUT
  TOLL-FREE INFO & ORDERING:
M-F: 9am-5pm (PST): (877) RAPID-10
  24/7 TECHNICAL SUPPORT:
  QUICK TOUR:
Quick Movie - How to Learn in 24 Hours
  QUICK SEARCH:
Keywords:  
 
  Rapid Learning Member Area:

Rapid Learning Member Login
Note: If you are a legacy user of chemistry24 members, please request a new login access to the premium server with your full name and old login email via vip@rapidlearningcenter.com
  RAPID COURSE CATALOG:
  Chemistry in 24 Hours
  CHEMISTRY TIPS WEEKLY:

Are you taking a chemistry course or preparing for a chemistry exam? If you are learning chemistry now, the Chemistry Tips Weekly is for you--it is a one minute learning each week to the chemistry mastery, free for all students. The chemistry tips will include the follwing topics

  • Chemistry survival basics
  • Top ten confusions in chemistry
  • How to ace chemistry exams
  • Your professors' confessions
  • Problem-solving tips in chemisrty
  • Plus much more...
Enter your name and email address below and click "Subscribe" to have free Chemistry tips delivered to your inbox weekly.

Your Name*  
Email*  
 

  OTHER RELATED SITES:
Note: For course links to launch, disable popup blockers or hold the ctrl key while clicking the link.

Bonus - Free Coaching for 3 Months :  Need help on your homework or exam questions? Get stuck on chemistry problems? Let Dr. Wayne and his team of faculty help you personally. Order one of our 24-hour rapid chemistry courses today and you will receive 3-month chemistry coaching ($297 value - free). Limited to first 250 students only. Grab yours today!

Drawing Organic Structure

Topic Review on "Title":

Importance of drawing structures
A structure must be given, otherwise the product of the reaction cannot be determined. The location of single, double, and triple bonds must be specified.

Types of Structures
In Lewis structures, all individual bonds are shown. Formal charge is a way of keeping track of the electrons.  Formal charge is equal to [number of valence electrons] B [nonbonding electrons] B 0.5 [bonding electrons]. In condensed structural formulas, atoms are bonded to a central atom are listed after the atom.  In a skeletal structure, carbon atoms are assumed to be where two lines meet or at the end of the line.  Hydrogens are not shown.  In a sawhorse structure, the drawing is looking down the carbon-carbon bond.

Isomers
Constitutional isomers have the same formula, but different points of attachment.  Configurational isomers have the same formula and the same point of attachment, but different orientation in space.  Conformational isomers have the same formula and the same point of attachment, but the rotation about single bonds is different.  In the eclipsed conformation of ethane, the front hydrogens block the back hydrogens. In the staggered conformation, the hydrogens are as far away from each other as possible.  The staggered conformation is the most stable.  For the conformations of butane, the front two carbons remain in place and the back two carbons rotate around the carbon 2 and carbon 3 bond.  In the totally eclipsed conformation, one methyl blocks the other methyl.  In the gauche conformation, the methyls are 60o apart.  In the eclipsed conformation, the methyls are 120o apart.  In the anti conformation, the methyls are 180o apart.  The stability of butane is anti > gauche > eclipsed > totally eclipsed.

Abbreviations
Me is an abbreviation for methyl, a CH3-.  Et is an abbreviation for ethyl, a CH3CH2-.  Pr is an abbreviation for propyl, a CH3CH2CH2-.  Butyl is an abbreviation for butyl, a CH3CH2CH2CH2-. Ph is an abbreviation for phenyl, a benzene ring.  Ar is an abbreviation for aromatic or aryl, a benzene ring.  Ac is an abbreviation for acetyl, a methyl next to a C=O.  Bz is an abbreviation for benzoyl, a benzene next to a C=O. Bn is an abbreviation for benzyl, a benzene attached to a CH2.  Pyr is an abbreviation for pyridine, a six-membered ring with alternating double and single bonds and containing nitrogen.


Rapid Study Kit for "Title":
Flash Movie Flash Game Flash Card
Core Concept Tutorial Problem Solving Drill Review Cheat Sheet

"Title" Tutorial Summary :
Structures, not formulas, must be used in drawing organic structures.  Double and triple bonds need to be shown in the structures.  Structural formulas can be described as Lewis structures, condensed structures, skeletal structures, and sawhorse structures.  Isomers can be classified as constitutional, configurational, or conformational.  The common organic abbreviations are given in terms of names and structures.

Tutorial Features:

This tutorial provides the comprehensive coverage of the chapter with easy introduction and simple illustration. It features:

  • Concept map showing interconnections of new concepts in this tutorial and those previously introduced.
  • Definition slides introduce terms as they are needed.
  • Visual representation of concepts.
  • Use of colors to emphasis points.
  • Compare and contrast of structures and isomers.
  • Examples worked out step-by-step throughout the tutorial.
  • A concise summary is given at the conclusion of the tutorial.

"Title" Topic List:

Importance of Drawing Structures

  • Structures, not Formulas
  • Show Multiple Bonds

Types of Structures

  • Lewis Structures
  • Condensed Structures
  • Skeletal Structures
  • Sawhorse Structures

Isomers

  • Constitutional Isomers
  • Configurational Isomers
  • Conformational Isomers

Abbreviations

  • Names
  • Structures


See all 24 lessons in college chemistry, including concept tutorials, problem drills and cheat sheets:
Teach Yourself Organic Chemistry Visually in 24 Hours

© 2014 Rapid Learning Center | Privacy Policy | Disclaimer | Affiliates
Chemistry Survival, Biology Survival, Physics Survival,
and Mathematics Survival Publishing are the divisions of Rapid Learning Inc.