| Popis: |
For a series of diphosphonium salts containing two positively charged covalently bonded phosphorus atoms, X/sub> n Y3-n P+P+X n Y3-n (X = alkyl substituent, Y = amino group, n = 0-3), the stability, reactivity, and P-P bond strength were evaluated by various physicochemical methods. The P-P bond energy is appreciably influenced by both steric factors and donor properties of the substituents. The calculations confirmed that transformations of diphosphonium salts can involve cleavage of both P-P and P-N (or P-C) bonds. |
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