HOME PAGE * KS3 SCIENCES * GCSE BIOLOGY CHEMISTRY PHYSICS * ADVANCED LEVEL CHEMISTRY

SPECTROSCOPY INDEXES  *  All Advanced Organic Chemistry Notes  *  [SEARCH BOX]

Advanced Organic Chemistry: Carbon-13 NMR spectrum of methyl methanoate

The Carbon-13 NMR spectrum of methyl methanoate

Doc Brown's Chemistry Advanced Level Pre-University Chemistry Revision Study Notes for UK IB KS5 A/AS GCE advanced A level organic chemistry students US K12 grade 11 grade 12 organic chemistry courses involving molecular spectroscopy analysing C-13 NMR spectra of methyl methanoate

C-13 nmr spectrum of methyl methanoate analysis of chemical shifts ppm interpretation of C-13 chemical shifts ppm of methyl formate C13 13-C nmr doc brown's advanced organic chemistry revision notes 

TMS is the acronym for tetramethylsilane, formula Si(CH3)4, whose 13C atoms are arbitrarily given a chemical shift of 0.0 ppm. This is the 'standard' in 13C NMR spectroscopy and all other 13C shifts, called chemical shifts, depend on the individual (electronic) chemical environment of the 13C atoms in an organic molecule - methyl methanoate here.

Methyl methanoate (methyl formate) C2H4O2(c) doc b , (c) doc b , (c) doc b

For more see Structure and naming of CARBOXYLIC ACIDS and DERIVATIVES, including isomers

Interpreting the C-13 NMR spectrum of methyl methanoate

As you can see from the diagram above there are 2 different chemical shift lines in the C-13 NMR spectrum of methyl methanoate indicating 2 different chemical environments of the carbon atoms.

HCOOCH3 

(Note the 2 colours indicating the 2 different chemical environments of the carbon atoms in methyl methanoate).

The two 13C chemical environments of the methyl methanoate molecule are the carbon atom of the methyl group and the carbon atom of the CH group.

The carbon-13 NMR spectra provides direct evidence of 2 different chemical environments of the carbon atoms in the methyl methanoate molecule from 2 different chemical shifts (ppm).


Comparing the infrared, mass, 1H NMR and 13C NMR spectra of the 2 isomers of C2H4O2

NOTE: The images are linked to their original detailed spectral analysis pages AND can be doubled in size with touch screens to increase the definition to the original ethanoic acid (acetic acid) and methyl methanoate (methyl formate) image sizes.

INFRARED SPECTRA: Apart from the significant differences in the fingerprint region at wavenumbers 1500 to 400 cm-1, the most striking difference is the broad O-H stretching band ~3200 cm-1, found in the infrared spectrum of carboxylic acids, but absent in the infrared spectrum of esters.

MASS SPECTRA: Apart from the m/z of 60 for the parent molecular ion and m/z 15 ion [CH3]+, both ethanoic acid and methyl methanoate show few similarities in their mass spectra. Their base ion peaks are quite different - for ethanoic acid it is m/z 43 and for methyl methanoate it is m/z 31.

1H NMR SPECTRA: The 1H NMR spectra of ethanoic acid and methoxymethane are similar with two 'wide-apart' chemical shift singlet peaks in the integrated proton ratio of 3:1 (meaning 2 different 1H chemical environments).

13C NMR SPECTRA: The 13C NMR spectra of ethanoic and methoxymethane are similar, both molecules give two C-13 NMR spectral lines (meaning 2 different 13C chemical environments). The two 13C chemical shifts of methyl methanoate are much further apart.


Key words & phrases: methyl formate Interpreting the C-13 NMR spectra of methyl methanoate, C-13 nmr spectrum of methyl methanoate, understanding the carbon-13 nmr spectrum of methyl methanoate, explaining the line pattern in the high resolution C-13 nmr spectra of methyl methanoate, revising the C-13 nmr spectrum of methyl methanoate, ppm chemical shifts of the C-13 nmr spectrum of methyl methanoate, how to construct the diagram of the C-13 nmr spectrum of methyl methanoate, how to analyse the chemical shifts in the carbon-13 NMR spectrum of methyl methanoate deducing the chemical environment of all the carbon atoms in methyl methanoate examining the c13 nmr spectrum of  methyl methanoate analysing the 13-c nmr spectrum of methyl methanoate how do you sketch and interpret the C-13 NMR spectrum of methyl methanoate interpreting interpretation of the C-13 NMR spectrum of methyl methanoate methyl formate


Links associated with methyl methanoate

The chemistry of CARBOXYLIC ACIDS and DERIVATIVES revision notes INDEX

C-13 NMR spectroscopy index

ALL SPECTROSCOPY INDEXES

All Advanced Organic Chemistry Notes

Use My Google search site box

Email doc b: chem55555@hotmail.com

TOP OF PAGE

 Doc Brown's Chemistry 

*

TOP OF PAGE

latest video game release 13c nmr spectrum of methyl methanoate latest pop music releases 13c nmr spectrum of methyl methanoate download free music 13c nmr spectrum of methyl methanoate latest film releases 13c nmr spectrum of methyl methanoate latest high street fashion in clothes 13c nmr spectrum of methyl methanoate fashionable trending in clothing 13c nmr spectrum of methyl methanoate girls buy clothes 13c nmr spectrum of methyl methanoate spend a lot of money on clothes 13c nmr spectrum of methyl methanoate shoes 13c nmr spectrum of methyl methanoate sweets and chocolates 13c nmr spectrum of methyl methanoate magazines and make-up. Boys buy food and drink 13c nmr spectrum of methyl methanoate computer games 13c nmr spectrum of methyl methanoate DVDs and CDs 13c nmr spectrum of methyl methanoate girls and boys spend a lot of money on credit for mobile phones 13c nmr spectrum of methyl methanoate buses and trains to transport them going out. Girls spend a lot of money on clothes color colour preferences in clothes 13c nmr spectrum of methyl methanoate cool sunglasses 13c nmr spectrum of methyl methanoate boys  buy expensive things like designer sports clothes and trainers 13c nmr spectrum of methyl methanoate teenagers save for holidays 13c nmr spectrum of methyl methanoate clothes 13c nmr spectrum of methyl methanoate mobile phones 13c nmr spectrum of methyl methanoate birthday presents and electronic goods 13c nmr spectrum of methyl methanoate teenage accessories 13c nmr spectrum of methyl methanoate Favourite style of jeans. A typical girl’s shopping list includes mobile phone credit deals 13c nmr spectrum of methyl methanoate fashionable quality cool airpods 13c nmr spectrum of methyl methanoate air pods 13c nmr spectrum of methyl methanoate fashionable clothes 13c nmr spectrum of methyl methanoate the most popular favourite sneakers 13c nmr spectrum of methyl methanoate fancy shoes 13c nmr spectrum of methyl methanoate sweets 13c nmr spectrum of methyl methanoate chocolates 13c nmr spectrum of methyl methanoate magazines 13c nmr spectrum of methyl methanoate lip moisturizer  13c nmr spectrum of methyl methanoate lots on make-up 13c nmr spectrum of methyl methanoate well being 13c nmr spectrum of methyl methanoate teenage decor decorating their room 13c nmr spectrum of methyl methanoate teenagers like LED string lantern lights 13c nmr spectrum of methyl methanoate beauty products for teenagers 13c nmr spectrum of methyl methanoate denim jackets 13c nmr spectrum of methyl methanoate scrunchies coolness 13c nmr spectrum of methyl methanoate fashionable back packs 13c nmr spectrum of methyl methanoate typical boy’s shopping list includes mobile credit deals 13c nmr spectrum of methyl methanoate eating out takeaway food and drinks 13c nmr spectrum of methyl methanoate what teenagers like to buy in clothes 13c nmr spectrum of methyl methanoate computer games 13c nmr spectrum of methyl methanoate DVDs 13c nmr spectrum of methyl methanoate CDs 13c nmr spectrum of methyl methanoate what teenagers talk about 13c nmr spectrum of methyl methanoate what teenagers worry about 13c nmr spectrum of methyl methanoate what teenagers like to do for fun sports 13c nmr spectrum of methyl methanoate what cool things do teenagers buy 13c nmr spectrum of methyl methanoate resale websites like eBay Teenager education word cloud how do I apply to university to study biology? 13c nmr spectrum of methyl methanoate what courses are available at university to study biology? 13c nmr spectrum of methyl methanoate what grades do I need to get to university to study biology? 13c nmr spectrum of methyl methanoate how do I apply to university to study chemistry? 13c nmr spectrum of methyl methanoate what courses are available at university to study chemistry? 13c nmr spectrum of methyl methanoate what grades do I need to get to university to study chemistry? 13c nmr spectrum of methyl methanoate how do I apply to university to study physics? 13c nmr spectrum of methyl methanoate what courses are available at university to study physics? 13c nmr spectrum of methyl methanoate what grades do I need to get to university to study physics? 13c nmr spectrum of methyl methanoate how do I apply to university to study biomedical sciences? 13c nmr spectrum of methyl methanoate what courses are available at university to study biomedical sciences? 13c nmr spectrum of methyl methanoate what grades do I need to get to university to study biomedical sciences 13c nmr spectrum of methyl methanoate how do I apply to university to study medicine? 13c nmr spectrum of methyl methanoate what courses are available at university to study medicine? 13c nmr spectrum of methyl methanoate what grades do I need to get to university to study medicine? 13c nmr spectrum of methyl methanoate how do I apply to university to study biochemistry? 13c nmr spectrum of methyl methanoate what courses are available at university to study biochemistry? 13c nmr spectrum of methyl methanoate what grades do I need to get to university to study biochemistry? 13c nmr spectrum of methyl methanoate how do I apply to university to study mathematics? 13c nmr spectrum of methyl methanoate what courses are available at university to study mathematics? 13c nmr spectrum of methyl methanoate what grades do I need to get to university to study mathematics? 13c nmr spectrum of methyl methanoate how do I apply to university to study chemical engineering? 13c nmr spectrum of methyl methanoate what courses are available at university to study chemical engineering? 13c nmr spectrum of methyl methanoate what grades do I need to get to university to study chemical engineering? 13c nmr spectrum of methyl methanoate how do I apply to university to study civil engineering? 13c nmr spectrum of methyl methanoate what courses are available at university to study civil engineering? 13c nmr spectrum of methyl methanoate what grades do I need to get to university to study civil engineering? 13c nmr spectrum of methyl methanoate how do I apply to university to study electrical engineering? 13c nmr spectrum of methyl methanoate what courses are available at university to study electrical engineering? 13c nmr spectrum of methyl methanoate what grades do I need to get to university to study electrical engineering? 13c nmr spectrum of methyl methanoate how do I apply to university to study computer science? 13c nmr spectrum of methyl methanoate what courses are available at university to study computer science? 13c nmr spectrum of methyl methanoate what grades do I need to get to university to study computer science? 13c nmr spectrum of methyl methanoate