how to interpret an IR for polyester (phenolphthalein/terephthaloyl)?
Homework Answers
ANSWER:
Your polyester must have an structure like this:
You must observe the following main signals:
- Aromatic C-H absorption between 3100-3000 cm-1 from aromatic rings of phenolphthalein and terephthaloyl
- C=O stretch absorption at 1725 cm-1 from terephthaloyl
- C=O stretch absorption at 1735 cm-1 from lactone ring of terephthaloyl
Maybe you can observe an O-H stretch at approx 3300 cm-1 for the -OH groups of phenolphthalein molecules that are placed at the end of the polyester chain (the molecules of phenolphthalein at the end of polyester chain will have one free -OH group)
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how
to interpret an IR for polyester
(phenolphthalein/terephthaloyl)?
Show how to determine the theoretical yield of 3.18g of Phenolphthalein combined with 2.03g of terephthaloyl...
Show how to determine the theoretical yield of 3.18g of
Phenolphthalein combined with 2.03g of terephthaloyl chloride to
form a polyester via the following equation (2 molecules of HCl are
also made in the reaction):
cl Terephtaloyl chloride Phenolphthalein poly (3-oxo-1 (3H)- Isobenzoluranylidene) 14-phenylenexy carbonyl-1,4-phenya lenecarbonyloxy - 1,4 phenylene
What features should I expect to see in a FTIR spectra of the polyester of Hydroquinone...
What features should I expect to see in a FTIR spectra of the
polyester of Hydroquinone and Terephthaloyl Chloride?
I have included an image of the spectra as a prompt.
Thanks in advance! :)
FTIR Absorbance Spectra Procedure 3 Absorbance 500 1000 1500 2000 2500 3000 3500 4000 4500 Wavenumber (cm-1)
What is the theoretical yield of polyester from the below reaction: 2. Room temperature method using...
What is the theoretical yield of polyester from the below
reaction:
2. Room temperature method using phenolphthalein Dissolve phenolphthalein (0.005 mole, 1.59 g), solid sodium hydroxide (0.4 g) and tetraethylammonium chloride (TEA) (0.5 g) in 50 mL of deionised water in a 200 ml beaker, then add a magnetic stirrer bar. Add 35mL of dichloromethane to the beaker. Cover the top of the beaker with aluminium foil. Set up a magnetic stirrer to provide continuous stirring at an intermediate speed....
the compounds A-H below To refresh your memory on how to interpret/label IR spectra, match with...
the compounds A-H below To refresh your memory on how to interpret/label IR spectra, match with the IR spectra provided. Once you have the spectra matched, dlearly labelthe functional Me Me
please explain E. Triterpene 32. The reaction of terephthaloyl chloride with ethylene glycol, shown, forms a...
please explain
E. Triterpene 32. The reaction of terephthaloyl chloride with ethylene glycol, shown, forms a 35. Reduction of D-xylose (shown) with sodium borohydride yields a product that is CHO H OH NaBHA HH HOH CH2OH HOOH H20 CI A. polyester B. polyamide C. polyether D. polycarbonate E polyurethane A. a racemic mixture B. a single pure enantiomer C. an equal mixture of two diastereomers D. an unequal mixture of two diastereomers E. a meso compound 33. Which of the...
?Help me interpret my IR and NMR please! I believe my unknown for the IR and...
?Help me interpret my IR and NMR please! I believe my unknown
for the IR and NMR is 2-Butanone.
108 105 100 ???? 098o 95 145 90-1 85- ?, 80- 75- 70 70- 4000 ?? 3500 3000 2500 2000 1750 1500 cm-1 1250 1000 Description 750700 04 a018
Interpret the IR spectra for isoamyl acetate. Is the ester pure or crude? Label major bond...
Interpret the IR spectra for isoamyl acetate. Is the ester pure
or crude? Label major bond types.
101, 100 %T 40+ 4000 3500 3000 2500 cm-1 2000 1500 1000 600
Can someone please interpret the IR Spectrum, Mass Spec, and NMR data to help me find...
Can someone please interpret the IR Spectrum, Mass Spec, and
NMR data to help me find the unknown compound and its
structure?
interpret the IR graph. Com BP MP TELE CRONE . بالالا W w ta GORDON DOOR...
interpret the IR graph.
Com BP MP TELE CRONE . بالالا W w ta GORDON DOOR wa
genx furnishings manufactures mapter 19 eBook Show Me How Calculator Fabric $ 67,190 Polyester filling 19,100...
genx furnishings manufactures
mapter 19 eBook Show Me How Calculator Fabric $ 67,190 Polyester filling 19,100 Lumber 148,690 Glue 6,640 The materials purchased during June are summarized from the receiving reports as follows: Fabric $336,430 Polyester filling 470,450 Lumber 909,970 Glue 34,360 Materials were requisitioned to individual jobs as follows: Fabric Polyester Filling Lumber Glue Total Job 601 $126,170 $157,080 $401,840 $ 685,090 Job 602 98,480 143,200 374,960 616,640 Job 603 93,500 115,630 206,150 415,280 Factory overhead-indirect materials $34,320 34,320...
Show how to determine the theoretical yield of 3.18g of
Phenolphthalein combined with 2.03g of terephthaloyl chloride to
form a polyester via the following equation (2 molecules of HCl are
also made in the reaction):
cl Terephtaloyl chloride Phenolphthalein poly (3-oxo-1 (3H)- Isobenzoluranylidene) 14-phenylenexy carbonyl-1,4-phenya lenecarbonyloxy - 1,4 phenylene
What features should I expect to see in a FTIR spectra of the
polyester of Hydroquinone and Terephthaloyl Chloride?
I have included an image of the spectra as a prompt.
Thanks in advance! :)
FTIR Absorbance Spectra Procedure 3 Absorbance 500 1000 1500 2000 2500 3000 3500 4000 4500 Wavenumber (cm-1)
What is the theoretical yield of polyester from the below
reaction:
2. Room temperature method using phenolphthalein Dissolve phenolphthalein (0.005 mole, 1.59 g), solid sodium hydroxide (0.4 g) and tetraethylammonium chloride (TEA) (0.5 g) in 50 mL of deionised water in a 200 ml beaker, then add a magnetic stirrer bar. Add 35mL of dichloromethane to the beaker. Cover the top of the beaker with aluminium foil. Set up a magnetic stirrer to provide continuous stirring at an intermediate speed....
the compounds A-H below To refresh your memory on how to interpret/label IR spectra, match with the IR spectra provided. Once you have the spectra matched, dlearly labelthe functional Me Me
please explain
E. Triterpene 32. The reaction of terephthaloyl chloride with ethylene glycol, shown, forms a 35. Reduction of D-xylose (shown) with sodium borohydride yields a product that is CHO H OH NaBHA HH HOH CH2OH HOOH H20 CI A. polyester B. polyamide C. polyether D. polycarbonate E polyurethane A. a racemic mixture B. a single pure enantiomer C. an equal mixture of two diastereomers D. an unequal mixture of two diastereomers E. a meso compound 33. Which of the...
?Help me interpret my IR and NMR please! I believe my unknown
for the IR and NMR is 2-Butanone.
108 105 100 ???? 098o 95 145 90-1 85- ?, 80- 75- 70 70- 4000 ?? 3500 3000 2500 2000 1750 1500 cm-1 1250 1000 Description 750700 04 a018
Interpret the IR spectra for isoamyl acetate. Is the ester pure
or crude? Label major bond types.
101, 100 %T 40+ 4000 3500 3000 2500 cm-1 2000 1500 1000 600
Can someone please interpret the IR Spectrum, Mass Spec, and
NMR data to help me find the unknown compound and its
structure?
interpret the IR graph.
Com BP MP TELE CRONE . بالالا W w ta GORDON DOOR wa
genx furnishings manufactures
mapter 19 eBook Show Me How Calculator Fabric $ 67,190 Polyester filling 19,100 Lumber 148,690 Glue 6,640 The materials purchased during June are summarized from the receiving reports as follows: Fabric $336,430 Polyester filling 470,450 Lumber 909,970 Glue 34,360 Materials were requisitioned to individual jobs as follows: Fabric Polyester Filling Lumber Glue Total Job 601 $126,170 $157,080 $401,840 $ 685,090 Job 602 98,480 143,200 374,960 616,640 Job 603 93,500 115,630 206,150 415,280 Factory overhead-indirect materials $34,320 34,320...
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