Question

Give the structural formula of
6-isopropyl-2,3-dimethylnonane and 5-sec-Butyl-4-isopropyldecane.

Answer 1

Hint: Structural formula is assigned with the help of IUPAC nomenclature rules where IUPAC stands for International Union of Pure and Applied Chemistry it gives us rules on how the structural formula of any compound is assigned.

Complete Solution :
We can identify the chemical compounds by finding their molecular formulas. Molecular formula of any compound tells us that how many atoms are there for every element existing in the compound but it fails to tell us about how and in which manner elements are attached to each other and also it gives us no idea about which atom of an element is attached to which so here we need the structural formula which displays how the atoms are organized and attached together in a molecular formula of a chemical compound. Structural formula of 6-isopropyl-2,3-dimethylnonane is given as:

- The naming is done through the IUPAC rule, First select the longest chain of carbon which is of nine carbon chain named as nonane and numbering starting from left to right at 2nd and 3rd position methyl group are present and on 6th position isopropyl group is there so it is named as 6-isopropyl-2,3-dimethylnonane.
Structural formula of 5-sec-Butyl-4-isopropyldecane is given as:

- This naming is also done through IUPAC rules, longest chain carbon is of 10 carbon i.e. decane and numbering is done from left to right at 4th position isopropyl group is there and on 5th sec-butyl group therefore it is named as 5-sec-Butyl-4-isopropyldecane.

Note: The main aim of the nomenclature IUPAC is to create an international standard for designating compounds to promote communication. The purpose of the system is to give a unique and unambiguous name to each structure so that no two structures' names get mixed or they can be identified easily.