{'fraction_non_alphanumeric': 0.02608695652173913, 'fraction_numerical': 0.010144927536231883, 'mean_word_length': 4.8559322033898304, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Spectroscopic Study of the Br- + CH3I → I- + CH3Br SN2 Reaction.

Mass spectrometry and anion photoelectron spectroscopy has been used to study the gas-phase S N 2 reaction involving Br - and CH 3 I. The anion photoelectron spectra associated with the reaction intermediates of this S N 2 reaction are presented. High-level CCSD(T) calculations have been utilised to investigate the reaction intermediates that may form as a result of the S N 2 reaction along various different reaction pathways, including back-side attack and frontside attack. In addition, simulated vertical detachment energies of each reaction intermediate have been calculated to rationalise the photoelectron spectra.