stuartischees
Oct21-09, 06:48 PM
1. The problem statement, all variables and given/known data
Alright, I've got a bunch of physical data and an IR Spectrum, but somehow it doesn't seem to match up with any compound I find through google. Even worse, I have a list of compounds it should be and there's still no obvious winner. Any help is dearly appreciated.
Clear, yellowish liquid. Fruity smell.
BP ~ 165.5C
Refractive index ~ 1.55 @ 20C
IR Specrtum:
Obvious OH shoulder, looks like a carboxylic acid
C=O band at 1703
Presumed C-O bond at 1204
Small band at 3064
Moderate bands at 2820 and 2850
Possible Unknowns:
Cyclohexanone
Bromobenzene
1-Bromobutane
2-Chloroethanol
Phenylacetylene
1-Octanol
Ethyl Benzoate
Propionic Acid
Benzaldehyde
1-Octene
2. Relevant equations
(nope)
3. The attempt at a solution
I'm pretty positive it has a carboxylic acid group from the IR spectrum. The only chemical above with that is Propionic acid, and that doesn't come close to the experimental values... so I'm not sure. I think the RI is dead on because we standardized it with ethanol beforehand. I don't know how accurate the temp is, to be honest.
Alright, I've got a bunch of physical data and an IR Spectrum, but somehow it doesn't seem to match up with any compound I find through google. Even worse, I have a list of compounds it should be and there's still no obvious winner. Any help is dearly appreciated.
Clear, yellowish liquid. Fruity smell.
BP ~ 165.5C
Refractive index ~ 1.55 @ 20C
IR Specrtum:
Obvious OH shoulder, looks like a carboxylic acid
C=O band at 1703
Presumed C-O bond at 1204
Small band at 3064
Moderate bands at 2820 and 2850
Possible Unknowns:
Cyclohexanone
Bromobenzene
1-Bromobutane
2-Chloroethanol
Phenylacetylene
1-Octanol
Ethyl Benzoate
Propionic Acid
Benzaldehyde
1-Octene
2. Relevant equations
(nope)
3. The attempt at a solution
I'm pretty positive it has a carboxylic acid group from the IR spectrum. The only chemical above with that is Propionic acid, and that doesn't come close to the experimental values... so I'm not sure. I think the RI is dead on because we standardized it with ethanol beforehand. I don't know how accurate the temp is, to be honest.