{'fraction_non_alphanumeric': 0.01937046004842615, 'fraction_numerical': 0.0, 'mean_word_length': 5.0, '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}}
Topological Studies on Heteroconjugated Molecules. III. On the Law of Alternating Polarity

The π-electron charge Qsh in alternant conjugated systems with one heteroatom is considered. A complete proof of the law of alternating polarity is presented. The integral expression for Qsh is decomposed into a number of relatively simple terms, which give some insight into the dependence of Qsh, on molecular topology.