The word roots such as meth. eth, prop, but denote the number of carbon atoms in the carbon chain. If carbon chain has, only one one carbon atom, word root is meth. If number of carbon atoms in the chain is two, eth is the word root used in IUPAC nomenclature in organic chemistry.
As examples, methane, methanal, methanoic acid can be shown for compounds which has only one carbon atom.
You may see these meth, eth, prop words are used in all IUPAC nomenclature of organic compounds. As examples, methane, propanoic acid, ethyl propanoate can be given.
Meth, eth, prop .. are used to name followings.
Following table includes word roots according to the number of carbon atoms.
|Chain length||Word root|
Meth, eth, prop word roots are used to define how many carbon atoms include in the main root and substituent.
To explain this, we take several examples of IUPAC nomenclature of alkane and more organic compounds.
Let's see how word roots are applied in root chain.
Lets see how alkanes are named according to the IUPAC rules. IUPAC names of alkanes should be finished with ane suffix.
Here, we see several examples of IUPAC nomenclature of alkyl halide compounds.
Here, we see more examples of carboxylic acid naming to understand meth, eth prop sequence.
When there is a substitute group of carbon atoms, there is a simple pattern of naming it.
|Chain length||Group||Name of substitute group|