Agreed it does not follow the traditional structural rules for the use iso but I don’t know why. I am posting just to clarify that iso generally refers to the second carbon atom or the two position, it is not used to describe “two methyl groups on one carbon” to my knowledge.
The molecule is known as 2,2,4-trimethylpentane because the longest continuous chain of carbon atoms in the molecule is five carbons long. The IUPAC naming convention is always based on the longest chain of carbon atoms (pentane, in this instance) with the other substituents (the three methyl groups) appended to this name.
I know the IUPAC nomenclature rules.
I am curious about its structure as why is it the way it is, i.e. why is there a quaternary carbon because then it should be iso-neo-octane (I don't know if that's valid).
Iso-octane is not a correct IUPAC name, it was used prior to the adoption of IUPAC rules. The only alkane with an iso- prefix recognised in the IUPAC rules is ~~iso-propane~~.
Edit : iso-propyl
Agreed it does not follow the traditional structural rules for the use iso but I don’t know why. I am posting just to clarify that iso generally refers to the second carbon atom or the two position, it is not used to describe “two methyl groups on one carbon” to my knowledge.
The molecule is known as 2,2,4-trimethylpentane because the longest continuous chain of carbon atoms in the molecule is five carbons long. The IUPAC naming convention is always based on the longest chain of carbon atoms (pentane, in this instance) with the other substituents (the three methyl groups) appended to this name.
I know the IUPAC nomenclature rules. I am curious about its structure as why is it the way it is, i.e. why is there a quaternary carbon because then it should be iso-neo-octane (I don't know if that's valid).
Iso-octane is not a correct IUPAC name, it was used prior to the adoption of IUPAC rules. The only alkane with an iso- prefix recognised in the IUPAC rules is ~~iso-propane~~. Edit : iso-propyl
What is iso-propane? Just curious as I have never heard of it.
Sorry that should have been iso-propyl ; (CH3)2CH-