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Intermolecular complexes of halocyclopropenone derivatives with the hypohalous acids HOF, HOCl, HOBr, and HOI

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The intermolecular interactions between halocyclopropenone derivatives (HC3OX; X = I, Br, Cl, and F) and hypohalous acids (HOY; Y = I, Br, Cl, and F) were studied via the MP2 method utilizing the aug-cc-pVTZ and aug-cc-pVTZ(-PP) basis sets. The three types of complexes were hydrogen bonds, halogen bonds, and complexes containing both hydrogen and halogen bonds. The results obtained indicated that interactions in the Type 1 complexes were stronger than those in Types 2 and 3. The H–O bonds revealed red shifts with complex formation in Types 1 and 2. The O–Y bonds displayed red shifts in the Type 3 and blue shifts in the Type 2 structures. |