New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

CHE 8A: Week 5 Notes

by: Mackenzie Hayes

CHE 8A: Week 5 Notes CHE 8A

Mackenzie Hayes

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

These notes cover this week's material, with snipits from the lecture notes and diagrams
organic chemistry - brief
Sarah Lievens
Class Notes
organic, Chemistry
25 ?




Popular in organic chemistry - brief

Popular in Biological Sciences

This 5 page Class Notes was uploaded by Mackenzie Hayes on Thursday April 28, 2016. The Class Notes belongs to CHE 8A at University of California - Davis taught by Sarah Lievens in Summer 2015. Since its upload, it has received 13 views. For similar materials see organic chemistry - brief in Biological Sciences at University of California - Davis.

Similar to CHE 8A at UCD

Popular in Biological Sciences


Reviews for CHE 8A: Week 5 Notes


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 04/28/16
CHE 8A: Week 5 Notes (4/25) ● Ring Nomenclature ○ If name carries on to next line, may use line-break hyphen ● Cycloalkanes​ → longest chain = ring ○ Number so you get the lowest possible #’s on substituents ○ If a tie → go ABC order ● 1 substituent: ○ Methyl cyclohexane → only 1 substituent, has to be C #1 ○ Writing 1-methyl… would be unnecessary ● 2 substituents: ○ 1 substituent will be #1 and the other as low as possible ○ TIE: so we go with ABC order ■ * 1-chloro-3-ethylcyclopentane * ■ X 3-ethyl-1-chlorocyclopentane X ● 3 (or more) substituents: ○ Aim for lowest possible numbers ○ If 2 or more are on the same C, ALWAYS make that C #1 ○ 3-tert-butyl-1-fluoro-1-methylcycloheptane ● If exactly 2 substituents on a ring: 2 different 3D structures ○ 1,2-dimethylcyclohexane: ● Boiling Points: ○ Measure of energy it takes to break up all intermolecular forces ■ Not the molecules themselves ○ Higher boiling point (BP) = more intermolecular forces ■ More “sticky” to itself ● Alkanes:​only one kind of Intermolecular Force (IMF) ○ London Forces / Dispersion Forces ■ Temporary dipoles; very weak ■ Move around like at a party, leaving an average overall force ○ London Forces: ​andom motion of e- clouds → create temporary dipole ■ Increase with larger molecules = more stuff = more e- ■ ↑mass ↑BP ■ Increase with greater Surface Area (more dipole to contact) ■ ↑Surface Area ↑BP ● Haloalkanes:​increased BP when compared to Alkanes ○ Permanent polar bonds / permanent dipole ○ Bigger orbitals = squishier = polarizable ○ Adding a non-C element → ads a permanent dipole ■ Increases BP: Stronger IMF​ipole/dipole, polar interactions ○ ↑Dipole ↑BP ● Hydrogen Bonds: strongest IMF ○ Between H and O,N, or F (with lone pair on O,N,F) ○ Huge dipole moment bonding to H ■ H2O → 2 H-Bond per O → BP 100°C ■ NH3 → 1 H-Bond per O → BP -33°C ■ CH4 → 0 H-Bond per O → BP -167.7°C ● Solubility: ○ How a molecule interacts with a different substance ○ How 2 substances dissolve together ○ Like dissolve Like ■ Different IMF = less soluble ○ Highly polar (H2O):​can dissolve Polar things ■ Amines, alcohols, carboxylic acids, ketone esters ○ Non-Polar (alkane, oil)can dissolve non-polar ■ Alkanes, haloalkanes, alkenes, alkynes ○ Slightly Polar (ether)can dissolve most stuff at least a bit ■ Ethers, ketones, esters, haloalkanes, amine, alcohols ○ Ions:​dissolve in H2O (4/27) ● Rotamers: ● Alkanes → C + H → all sigma bonds → single → e- btwn 2 atoms ● Ethane → CH3-CH3 ● Into 3 Dimensions: ○ 2 extreme structures ○ (solid triangle = to us, dashed = away from us) ○ Staggered Rotamer: ■ Essentially looking at angle from the side ■ Angle btwn H’s on 2 different C’s = 60 degrees = torsional angle ■ Center = C1, Ring = C2 ○ Eclipsed Conformer: ■ All C-H bonds lineup ■ H’s directly eclipsed by one another ■ 0 degrees torsional angle ○ Skew Angle = a ​nything else (any other torsional angle) ● Any Alkane is always rotating ○ Angles change constantly ○ Eclipse or bonds close together require more energy ● Butane: 1: 2: 3: 4: 5: 6: ● 1:staggered conformer, large CH groups 180 degrees apart ● 2: clipsed, overlap of larger and smaller groups (3.3 kcal) ● 3: taggered, larger groups 60 degrees, bump into ea​tericer = s hindrance ● 4:fully eclipsed, larger groups 0 degrees (4.2 kcal) ● 5:staggered and gauche ● 6:eclipsed ● (repeat) ● Steric hindrance, torsional strain, and gauche are slightly higher energy ○ As opposed to fully staggered


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Allison Fischer University of Alabama

"I signed up to be an Elite Notetaker with 2 of my sorority sisters this semester. We just posted our notes weekly and were each making over $600 per month. I LOVE StudySoup!"

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Parker Thompson 500 Startups

"It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.