{'fraction_non_alphanumeric': 0.033381712626995644, 'fraction_numerical': 0.00725689404934688, 'mean_word_length': 5.388888888888889, '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}}
Benefits of the Chelate Effect: Preparation of an Unsymmetrical ansa-Bis(imido)molybdenum Complex Containing a Seven-Membered Chelate Ring.

The unsymmetrical ansa-bis(imido)molybdenum complex 2 was prepared in high yield from the diamine 1 and sodium molybdate under one-pot conditions. Owing to the chelate effect, 2 is perfectly stable toward imido redistribution reactions, although it contains a strained seven-membered chelate ring with a small N−Mo−N bite angle. The dependence of the frontier orbital energies of geometry-optimized (HN)2MoCl2 on the N−Mo−N bite angle was investigated by extended Huckel calculations and was found to be largest in the vicinity of the HOMO minimum.