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Reality. ZINDO approximation. Vibrational Fine Structure. high gradient* ~ broad band. 15. 15. 10. 10. 5. 5. 0. 0. -5. -5. -10. -10. 1.1. 1.6. 2.1. 2.6. 3.1. 3.6. 1.1. 1.6. 2.1. 2.6. 3.1. 3.6. Higher gradient allows access to more vibration levels from ground state
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Reality ZINDO approximation Vibrational Fine Structure
high gradient* ~ broad band 15 15 10 10 5 5 0 0 -5 -5 -10 -10 1.1 1.6 2.1 2.6 3.1 3.6 1.1 1.6 2.1 2.6 3.1 3.6 Higher gradient allows access to more vibration levels from ground state and hence, higher band width Gradient Affects Band Width low gradient* ~ narrow band
Band Width Estimation Higher gradient allows access to more vibration levels from ground state and hence, higher band width Gradient calculated from the “excited state energy” of the ground state geometry