CHEM 281 Lecture Notes - Lecture 4: Staggered Conformation, Eclipsed Conformation, Cyclohexane Conformation
12 Jun 2017
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Document Summary
Module 4: nomenclature and general properties of alkanes, cycloalkanes, Straight-chain alkanes have a sig-sag orientation when they are in their most straight orientation: straight-chain alkanes are called unbranched alkanes (fig. Figure 1: ball-and-stick models for three simples alkanes. Molecular model: you should always build molecular models when studying shapes of molecules to understand their 3d nature: branched alkanes have at least one carbon which is attached to more than two other carbons (fig. Table 1: number of alkane isomers: constitutional isomers have different physical properties (melting point, boiling point, densities, etc, they have the same molecular formula but different connectivity of atoms. Instead, the name dihydrogen oxide, tells us this (although obviously, this name is not often used). Nomenclature of unbranched alkanes: you should be familiar with the first 12 names in table 3. This will also provide you with the prefixes for alkanes containing up to 12 carbons in a linear chain.
