Ammonia 2 Ammonia complexes 2 Ammonia molecules 2 Basis sets 2 C-F bonds 2 Conical intersection 2 Diamond films 2 Electronic excited state 2 Energy gap 2 Excited states 2 Fluorine 2 Good correlations 2 Ground state 2 Hydrogen 2 Hydrogen transfer 2 Intermolecular stretching 2 Internal conversions 2 Optimized geometries 2 Organic polymers 2 Ortho-substitution 2 Out-of-plane distortions 2 Phenols 2 Picoseconds 2 Pump-probe spectroscopy 2 Pumps 2 Quantum chemical calculations 2 Quantum chemistry 2 Quantum theory 2 Solids 2 State concerns 2