CHM1022 Lecture 1: Basics of Organic Chemistry
11 Aug 2018
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Understand how structure impacts properties of simple alkanes. Draw alkanes, alkenes and alkynes representing their 3d structure. Distinguish between conformations of alkanes and alkene stereoisomerism. = simples form of organic molecule consisting of only c and h. Dashed bonds - point away from you (behind paper/screen) (c-f) Wedged bonds - point towards you (in front of paper/screen) (c-cl) Straight bonds - are on the plane of the paper/screen (c-ch3) Increase in c, increases:: melting point, boiling point, density. = molecule having multiple 3d shapes due to rotation in sigma bonds. = rotation of sigma bond creates longest distance between atoms attached to each carbon. = atoms on each carbon are as close as possible to each other. Conformations can be viewed as ball and stick" or the newman projection". Convert by relatively low energy rotation of single bonds. At room temperature molecule often moves through many conformations.
