Here's an example of using Web of Science to find articles about the resonance energy of benzene. Web of Science covers ~18,000 journals, including all of the key chemistry journals.
Search for articles on your topic, using relevant keywords. Refine your search if you get too many or too few results.
View the results. Click the article title to bring up the full abstract (summary of the article: including methods, data, and discussion).
Select an article that may be relevant. You can see what the article is about, look at papers that cited this article, look at the articles that these authors cited AND look for potentially related articles based the number shared citations (papers that both authors cited), and then go to the publisher's website to get the article. If that doesn't work, try the 
link. The articles are not actually in Web of Science, but you get enough information to decide if the article is worth grabbing.
Download and read the article. If you need to cite the article, all of the information you need is on this page.
