02) 25Aug2010

02) 25Aug2010 - Section 1.2 Chemical foundations Share...

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Unformatted text preview: Section 1.2 Chemical foundations Share electrons through covalent bonds creating large “organic” compounds which are terminated with H Carbon (and Silicon) can have 4 equal bonds – sp 3 hybridization Show covalent bonds as lines Displaying molecules Perspective, Ball-and-Stick, Space filling Bonds only – show heteroatoms but not C and H O – O NH3+ SYMYX Draw Sp 3 hybridization on carbon creates 4 equal bonds in a tetrahedral configuration Rotation around single bonds are possible but are energetically hindered by steric restraints Double bonds (sp 2 hybridized C) are restrained and rotation is typically associated with chemical reactions In the retina, cis-trans isomerization of retinal changes the conformation of a protein eliciting a chemical reaction which promotes a nerve response In water, double bonds are created by enzymatic dehydration of alcohols Cis- and Trans- conformations are geometric isomers O – O – O OH O-OCH3 > -OH > -NH2 > -COOH > -CHO > -CH2OH > -CH3 > -H...
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This note was uploaded on 09/18/2011 for the course CHEM 3510 taught by Professor Mueser during the Spring '10 term at Toledo.

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02) 25Aug2010 - Section 1.2 Chemical foundations Share...

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