How are structural isomers found?

1 Answer
anor277
Jul 13, 2017

Structural isomers differ in their connectivity.........

Explanation:

And organic chemistry provides a WEALTH of examples of structural isomerism..........even if (for simplicity) we confine our discussion to alkanes......

For #"propane"#, #C_3H_8#, #1# isomer is possible.

For #"butane"#, #C_4H_10#, #2# isomers are possible.

For #"pentane"#, #C_5H_12#, #3# isomers are possible.

For #"hexanes"#, #C_6H_14#, #5# isomers are possible.

As the formula becomes bigger, the number of isomers grows remarkably.... I read on the interwebz that a formula of #C_8H_18# (not too much bigger than the ones we have considered) can generate an astonishing 18 structural isomers. Have I found them, god no, I have a life.........

And how do you find them? Well, do not ever despise the utility of using models, so that you can actually see the connectivity. Molecular model sets will be permitted in every organic examination, and will also ALWAYS be found on the desks of distinguished professors of organic, and inorganic chemistry.

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