I need to compare the IR SPECTRA for benzophenone and
triphenylmethanol. The image below is from the IR spectra of my
product ( supposed triphenylmethanol) that i got at the
experiment.
The IR spectrum of benzophenone is shown below:
The main distinguishing feature is the C=O stretching at 1660 cm-1 (peak 2).
The IR spectrum of triphenylmethanol is shown below:
The main distinguishing feature is the O-H stretching at 3470 cm-1 (peak 1).
The other peaks in both spectra are very similar due to the similar structural unit in benzophenone and triphenylmethanol. These include the aryl C-H stretching at 3060 cm-1, the aryl C=C ring stretching at 1440-1600 cm-1 and the aryl C-C and C-H bending modes below 1000 cm-1.
You should also consider the IR spectrum of the precursor to benzophenone: the alkyl benzoate ester starting material (methyl or ethyl benzoate?). The typical IR spectrum is shown below. The main distinguishing feature is the C=O stretching at 1726 cm-1.
Looking at the IR spectrum of your product, there is a very large C=O stretching peak evident at around 1750 cm-1. It is somewhat high compared to the C=O stretching in benzophenone (1660 cm-1) but is very close to the C=O stretching of alkyl benzoate ester (1726 cm-1). This suggests that there is a significant amount of the unreacted alkyl benzoate ester present in your product.
There is apparently also some benzophenone (C=O stretching peak at 1660 cm-1) and triphenylmethanol (O-H stretching peak at 3470 cm-1) present in your product.
I need to compare the IR SPECTRA for benzophenone and triphenylmethanol. The image below is from...
IR Spectrum of Benzophenone and
Triphenylmethanol
I have partly labeled these two IR spectrums but need help
making sure I did it correct and if I need to label any other
important peaks corresponding to the structures. See underneath
each picture for the labeled peaks and if they are correct/if I
should label any others.
Benzophenone:
C-H stretch (aromatics) at around 3000-3100?
C=O strecth (ketone) at around 1700?
Any others that I missed that are important for me to label?...
I need a flow chart showing the SEPARATION SCHEME from benzophenone to triphenylmethanol. I really, really need your help on this one. This is a speration scheme not reaction mechanism.
compare the IR spectra of the alcohol and product and comment
on the completion of the reaction and purity of the product
collected
IR Spectra Alcohol lansmance 4000 3500 3000 1500 2500 2000 Wavenumbers (cm-1) 4000 3500 3000 2921.53 2500 Wavenumbers (cm-1) 2000 IR spectra product 1500 1444 44 1375 29 1000 1143.23 1039.81 916.32 797.83 423.62
The synthesis of triphenylmethanol via the grignard reaction is
given by the following equation (below):
A student decides to perform the above reaction. She starts with
200 mg of bromobenzene (M.W. = 157) and uses 45 mg of Mg (M.W. =
24.3) and 0.36 g of benzophenone (M.W. = 182).
a. Calculate the limiting reagent
b. Calculate the theoretical yield of triphenylmethanol (M.W. =
260.3)
c. She obtains 0.172 grams of of the product. What is her actual
yield?
d....
1. shown below are IR spectra of cyclohexanecarbaldehyde (I)
and cyclohexene (II). which of the spectra A and B corresponds to
which structure (I or II)? On each spectrum identify the peaks that
are associated with a specific bond vibration bond by drawing the
functional group for that bond, circling the specific vibrating
bond and drying and arrow from the circled bond to the absorption
peak. include all the C-H bonds.
2. provided below are IR spectra of
1,2,3,6-tetrahydrobenzaldehyde (I)...
IR spectroscopy 1. Match the following six compounds to the IR spectra shown below. Draw the structure in the box. On the spectra, mark all important peaks with arrows or circles, and label them with corresponding bonds. NH2 orte de Structure: IR Spectrum lould film) 1723 V 4000 2000 3000 1200 1600 V (cm ) Structure: IR Spectrum fiquld fam) 4000 2000 V (cm 16001200800 ) Exp - 119- Exp. 100 Structure: 3600-2500 IR Spectrum liguld fm) U 1715 4000...
can you analyse this Ir spectra I got from aspirin synthesis
lab?
633 7a 1, 4739%T 3000 2500 2000 1500 1000 DELL
633 7a 1, 4739%T 3000 2500 2000 1500 1000 DELL
Grignard Reaction with a Ketone: Triphenylmethanol Introduction: The purpose of this lab is to prepare phenylmagnesium bromide, a Grignard reagent, and react it with benzophenone to give triphenylmethanol. Grignard reagents are very reactive and must be synthesized in an environment free of water or any other source of potential proton donor. Once made, the Grignard reagent will do a nucleophilic attack on the carbonyl carbon of the ketone, benzophenone. The result is an alkoxide that is then protonated to give...
We preformed an Grignard Reaction in Organic Chemistry lab.
Benzophenone + Phenylmagnesium Chloride (2M in THF) + Diethyl
Ether -> triphenylmethanol
This may help:
Below are IRs of Benzophenone and Trimethylmethanol. We
performed a Grignard reaction to get an alcohol product from a
ketone. I am having trouble with the peaks. They do not look great
and the sample IR on the Benzophenone's Ketone peak is not where I
would expect. Please help me characterize this. Note: We were
unable...
3. Two IR spectra are available for this experiment, one of them is your starting martial the other is your product. Identify the diagnostic peaks from the IR spectra that allow you to determine which is your starting material and which is your product. IR of trans-cinnamic acid IR of 2,3-dibromo-3-phenylpropanoic acid