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electron Pushing handout 1

electron Pushing handout 1 - bond(or nonoctet atom...

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C C O - H H H O C C O H H H O - H C C H H C + H H H C + C H H C H H O N C H H H C C H H C H H C N H Chemistry 140A (Prof. C. L. Perrin) "You takes the electrons from where they is to where they ain't." Delocalizable electrons are in lone pairs or multiple bonds, and they might like to be in lone pairs or on electronegative atoms or in other multiple bonds. The tail of the arrow originates at the electron pair (in a lone pair or multiple bond) that is pushed, and the head of the arrow points to the atom or internuclear region toward which the electron pair is going. A clue to the possibility of delocalization is a multiple bond adjacent to a lone pair or multiple
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Unformatted text preview: bond (or nonoctet atom), where "adjacent" means separated by a single bond (and doesn't mean sharing an atom). If there are only lone pairs and "isolated" multiple bonds (having no adjacent lone pair, multiple bond, or nonoctet atom), then it is not possible to "push" electrons. C C C C C C C C C C C C H H H H H H H H H H H H ELECTRON PUSHING (Part 1) STABLE OCTET ATOMS (connect lines as single, double, or triple bonds) C C – N + N N – O + O (check that your C, N, and O fit one of these patterns) X X X X O –...
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