Instead of me making up metal complexes or molecules, I decided to use real ones that were published in chemistry journals. So here we go with the first one. In the latest issue of Inorganic Chemistry journal (ACS Publications), there is a "tungsten-alkylidyne complex" (DOI: 10.1021/ic401450u).
If you don't believe me you can read the article. It's also mentioned in the article that the point group is C4v. In the upcoming posts, I will try to explain why we need to find point groups of molecules and how we use them.