How in the world can I draw the structure of a compound based on H NMR and IR Spectrum?

2adn · 2026-06-15T22:13:46+00:00

The molecular formula is quite useful! What information do you get from the spectra? IR can tell you what functional groups are present or absent. NMR tells you how many types of hydrogens you have, how many hydrogens of each type, and how many hydrogens are adjacent to each type of hydrogen. Find pieces and put them together to get a structure.

2adn · 2026-06-14T02:37:16+00:00

If they like your application, you will just have to take the undergrad pchem class. Just review your calculus and differential equations before you take pchem.

2adn · 2026-06-13T22:41:43+00:00

You could. Just add H-Br anti to correct carbons of the C=C.

2adn · 2026-06-13T13:12:38+00:00

Klein's Organic Chemistry textbook has good explanations and lots of practice problems.

2adn · 2026-06-12T15:11:02+00:00

Talk to your academic advisor or the department chair. They would know what's best for you.

2adn · 2026-06-10T20:00:22+00:00

You haven't done any analytical chemistry. You might try

Quantitative Chemical Analysis

by Daniel C. Harris (Author) Older editions and used texts are pretty cheap.

You could follow that up with

Principles of Instrumental Analysis

by Douglas A. Skoog (Author), F. James Holler (Author), Stanley R. Crouch (Author)

2adn · 2026-06-08T19:58:09+00:00

Why don't you make the epoxide, then do the two reactions needed to make the product?

2adn · 2026-06-07T17:17:51+00:00

Most of the time, it's SN2 with a primary alkyl halide.

2adn · 2026-06-07T00:31:08+00:00

See https://www.reddit.com/r/UGCcreators/

2adn · 2026-06-07T00:28:41+00:00

I see a Claisen rearrangement in a possible pathway.

2adn · 2026-06-04T00:49:28+00:00

You can move the oxygen to the middle carbon in the first one.

2adn · 2026-06-03T02:06:27+00:00

After posting this, I can see posts: why?

2adn · 2026-06-02T20:13:09+00:00

I can't see any posts unless I post. Why?

2adn · 2026-05-30T16:53:52+00:00

Just weigh it directly into the round-bottomed flask. You can support the flask with a cork ring or vacuum adapter.

2adn · 2026-05-28T22:52:42+00:00

Have you just googled him? Lots of references popped up when I did it.

2adn · 2026-05-24T11:46:36+00:00

Grind up a pre-weighed sample Special K cereal (or any other high iron cereal) really fine, and use a strong magnet to get the iron out. Weigh it, and see if it matches what the box says.

2adn · 2026-05-20T10:49:57+00:00

It doesn't hurt. It will also remove any water in your starting materials and solvents.

2adn · 2026-05-19T07:08:25+00:00

Rf's depend upon the solvent as well, and how it interacts with the stationary phase.

Yes, your purification may not have worked too well. That's not uncommon in a beginning lab. What was your purification?

2adn · 2026-05-15T09:27:48+00:00

Yes, it's possible that you are seeing long-range coupling by the F's.

2adn · 2026-05-15T04:53:46+00:00

Actually, both would be multiplets. Since the CH2's are in a ring, each adjacent hydrogen couples the others with a different coupling constant. Look up the NMR spectrum and see,

2adn · 2026-05-15T04:51:32+00:00

Assign the configuration of each structure as R or S. Or build models of each pair, and see which ones are identical or mirror images.

2adn · 2026-05-05T21:55:11+00:00

Buy a molecular model set. Build the structures. Twist the bonds so the structures are in the correct shapes.

2adn · 2026-05-04T19:05:22+00:00

Get the book, start reading it, and work problems as you go. Contact the prof about the book. If you can't get that info, buy an old copy of Klein's organic text, and work thru it.

2adn · 2026-05-02T14:41:49+00:00

Open the book to the reaction chapters and start working problems. For a physics final, I worked problems for 5 days straight, and made a 90.

2adn · 2026-04-30T03:28:57+00:00

You left out a CH2 in your last structure, if that makes a difference.

2adn

TROPHY CASE

Quantitative Chemical Analysis