1aa3-2012-tut11-q

1aa3-2012-tut11-q - CHEMISTRY 1AA3 Week of March 26, 2012...

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CHEMISTRY 1AA3 Week of March 26, 2012 TUTORIAL PROBLEM SET 11 ______________________________________________________________________________ Page 1 of 2 1. What is chemical biology? 2. Indicate whether or not you would expect the following molecules to be aromatic and indicate the total number of π-electrons present in each compound. 3. It is possible to create cyclic carbocations and carbanions that are aromatic. If an ionic species has an unbroken ring of sp2 hybridizid ring atoms and meets Hückel's rule, it will likely be aromatic and therefore much more stable than non-aromatic analogs. Rings of sp2-hybridized atoms that do not follow the Hückel rule are typically very reactive (often called antiaromatic because they are less stable than open chain analogs. Indicate which of the following ions would be expected to be formed fairly easily from neutral precursors (particularly if their precursors are not aromatic). 4.
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This document was uploaded on 03/29/2012.

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1aa3-2012-tut11-q - CHEMISTRY 1AA3 Week of March 26, 2012...

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