(1) NASA Ames Research Center, 94035-1000 Moffett Field, CA, USA;(2) ELORET Institute, 94303 Palo Alto, CA, USA;(3) Present address: San Diego Supercomputer Center, P.O. Box 85608, 92186-9784 San Diego, CA, USA
Abstract:
Summary We show that atomic natural orbitals are an excellent way to contract transition-metal basis sets, even though the different low-lying electronic states may have very different basis set requirements.