The scientist who was not involved in determining the structure of DNA is Linus Pauling.

The main scientists who were involved in this discovery were:

* James Watson

* Francis Crick

* Maurice Wilkins

* Rosalind Franklin

While Linus Pauling was a brilliant chemist and Nobel laureate, he was working on a different model of DNA structure at the time. He was very close to finding the correct structure but ultimately, Watson and Crick beat him to it.