| 11. | This property makes them both excellent nucleophiles " and " lewis bases ( electron pair doners ).
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| 12. | With simple Lewis bases ( L ), Al 2 Br 6 forms adducts, such as AlBr 3 L.
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| 13. | (bda ) Fe ( CO ) 3 reacts with Lewis bases to give adducts without displacement of the bda.
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| 14. | It is a moderately strong Lewis acid, forming adducts with Lewis bases such as triphenylphosphine oxide, e . g.
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| 15. | However, they are Lewis acids, because they accept electron pairs from some Lewis bases, most notably base anhydrides.
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| 16. | Otherwise ( C 6 F 5 ) 3 B binds to a wide range of Lewis bases, even weak ones.
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| 17. | Ethyl acrylate reacts with amines catalyzed by Lewis bases in a Michael addition to ?-alanine derivatives in high yields:
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| 18. | These compounds are Lewis acids in that they readily form adducts with electron-pair donors, which are called Lewis bases.
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| 19. | Electron donors ( e . g . nucleophiles, Lewis bases ) for example dimethylsulfide and dimethylsulfoxide are believed to stabilize the carbocation.
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| 20. | However, they are Lewis bases, because they will share an electron pair with some Lewis acids, most notably acidic oxides.
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