Addendum_Chap_2A - Hydrocarbons Note: Rings also are found...

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Hydrocarbons Note: Rings also are found for the above non-aromatic types of hydrocarbons.
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Alkane Formulas • All C-C single bonds (no functional groups present) • Saturated with hydrogens (none can be added) • Ratio: C n H 2n+2 (no rings present) • Alkane homologs: CH 3 (CH 2 ) n CH 3 (aliphatic compds) • Same ratio for branched alkanes
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Representation of Alkane Structures • Lewis structures with all bonds or with some bonds deleted are valid (all atoms must be denoted) • Condensed structures include all atoms but no bonds
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Pentane Constitutional Isomers C 5 Chain C 4 + C 1 C 3 + C 2 (or 2C 1 ) 1 2 3
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Constitutional Isomers • differ in how their atoms are arranged in chains • not restricted to alkanes • must have the same molecular formula ( to be isomers )
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Generating Alkyl Groups Alkyl group – remove one H from an alkane, leaving a “phantom bond” (supplies one-bond connection ~ H, Cl) • General abbreviation “R” ( incomplete species or the “rest” of the molecule
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This note was uploaded on 04/17/2008 for the course CHEM 2210 taught by Professor None during the Spring '08 term at Rensselaer Polytechnic Institute.

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Addendum_Chap_2A - Hydrocarbons Note: Rings also are found...

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