There are a lot of experimental chemists that use theory to start their projects (Ab Initio calculations). One of my research adviser used Gaussian and Cfour to compute the geometries, harmonic frequencies, dipole moments, etc. before beginning his work on IR laser spectroscopy. However, my theoretical chemistry research adviser told me that isn't really a "theoretical chemistry." He told me it's more of a computational chemistry combined with experimental. I was looking for professors that combine both theoretical and experimental chemistry as well and my adviser to me to look for chemistry programs that have large physical chemistry department. Those include "big schools" such as MIT, UC Berkeley, UChicago, Ohio State, etc. He also suggested schools with prestige theoretical chemistry program, but not so much of experimental, such as University of Florida or University of Georgia.