![]() ![]() In such a case, there are several rules that you must follow to give the alkane the correct name.įind the longest chain of carbons in the molecule. The nomenclature becomes more complex if the alkane branches. Learning the prefixes for up to twelve carbons is a good idea. (An easy way to remember the first four names is the anagram Mary eats peanut butter, standing for methane, ethane, propane, butane). On the other hand, for 5 carbons and up a prefix derived from greek is given. These are methane, ethane, propane, and butane, respectively. Prefixes for alkanes that have 1-4 carbons are rooted historically. The name pentane, for example, tells you that the molecule is an alkane (thus the ane ending) and that it has five carbons (pent indicates five). To give an alkane a name, a prefix indicating the number of carbons in the molecule is added to the suffix ane, identifying both the kind of molecule (an alkane) and how many carbons the molecule has (the prefix). Naming of straight chain alkanes (alkanes that do not branch) is a straightforward process. This name may then be modified by prefixes, infixes, and, in the case of a parent hydride, suffixes, which give the precise structural changes required to generate the actual compound from the parent structure. Organic nomenclatureThe systematic naming of an organic compound generally requires the identification and naming of a parent structure. ![]()
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