Functional Groups

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CH 220 1st Edition Lecture 3 Outline of Current Lecture I. Functional groups II. Alkanes III. Alkane Isomers Current Lecture I. Functional groups a. Collection of atoms at a site that have a characteristic behavior in all molecules where it occurs b. The group reacts in a typical way, generally independent of the rest of the molecule c. Some functional groups have double/triple bonds: i. Alkenes have a carbon carbon double bond ii. Alkynes have a carbon carbon triple bond iii. Arenes have an alternating single and double bonds arranged in a ring, sometimes known as an aromatic ring (it doesn’t mean it smells good, it just means that it smells) d. Some functional groups have a carbon singularly bonded an electronegative atom: i. Alkyl halide has a bond to F, Cl, Br or I (halogens) ii. Alcohol has a bond to OH iii. Ether has an oxygen bridge between 2 carbons e. Some functional groups have a carbon-oxygen double bonds (these have a family name of Carbonyls) – see diagrams in the inside cover of textbook i. Aldehyde ii. Ketone iii. Carboxylic acid iv. Ester v. Amide vi. Acid chloride II. Alkanes a. Compounds with carbon carbon single bonds and carbon hydrogen bonds, no functional groups (aka hydrocarbons) b. Formula for alkane with no rings must be CnH2n+2 (i.e. if there are 10 carbons, the amount of hydrogens would be 2 x 10 + 2 = 22 These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.

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