If you are a student and you are stuck on a problem, you should email “Dr. Structure” and ask a specific question about a problem.

Bona-fide instructors can obtain answers (written and video) by emailing Professor Bradley D. Smith, Department of Chemistry & Biochemistry, University of Notre Dame, IN 46556, USA

This project was supported by a Cottrell Scholar Award of Research Corporation for Science Advancement and NSF Awards CHE-9501166, CHE-0748761, CHE-1058699, CHE-1708240, and CHE-2103598.