CHM 151 (PS 3 F07)

CHM 151 (PS 3 F07) - CHEMISTRY 151.001 Fall 2007 Problem...

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CHEMISTRY 151.001 Fall 2007 Problem Set 3 1. For each of the following transformations: identify the nucleophilic atom and the electrophilic atom and fill in the arrows that would lead to the products shown in a single step. An example has been given below. Notice a few things: It is necessary to draw out the Lewis structure of the reagents in order to understand the true reactivity of each molecule – including (especially?) ionic compounds. Remember Na + is a spectator ion and will not participate in covalent bond formation, etc. and thereofore you should not draw arrows from or to Na + . The arrows begin at the nucleophilic atom (Nuc) = Lewis base = source of electrons (lone pairs, π or σ bonds) The arrows end at the electrophilic atom (E + ) = Lewis acid = electron deficient site The charge is conserved on each side of the arrow. If a bond is made to an atom that already has 8 electrons (or 2 in the case of H) a bond must be broken so as not to break the octet rule. Arrows are NOT used to signify formation of IONIC bonds – only covalent bonds.
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This note was uploaded on 05/13/2010 for the course CHEM 151L taught by Professor Roy,christopher during the Fall '08 term at Duke.

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CHM 151 (PS 3 F07) - CHEMISTRY 151.001 Fall 2007 Problem...

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