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DOI: 10.1039/A704684G (Paper) Reference Section for: Chem. Commun., 1997, 1947-1948

‘Soft–soft’ halogen–halogen interactions in solid ion pairs of solvent-free Pri3PCl2 and CH2Cl2-solvated Pri3PBr2: structural features of chloro- and bromo-triisopropylphosphonium salts

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Frank Ruthe

Abstract

An X-ray crystallographic study of solvent-free Pri3PCl2 and dichloromethane-solvated Pri3PBr2 reveals that both halogenophosphonium halides exist as monomeric ion pairs Pri3P+–X···X–; elongations of P–Cl and P–Br bonds are associated with Cl···Cl and Br···Br interactions.

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