Journal Article 2 steric crowding E1UOL152H7 1 Halogens 1 Iron 1 Research Support, Non-U.S. Gov't 1 bond ellipticity 1 mehr ... covalence 1 cyclophane 1 dispersion interactions 1 exchange-correlation energy 1 halogen 1 intramolecular interactions 1 iron maiden 1 molecular fragmentation 1 multi-center interaction 1 repulsion 1 symmetry-adapted perturbation theory 1 total delocalization index 1 weniger ...