IUPAC name determines identity of a compound, by showing its chemical and physical properties. Some of the students made mistake in spelling and punctuation of IUPAC names, which effects on their overall performance in semester and also on memorizing and recognizing organic compounds. Following are some of the main rules to spell and punctuate IUPAC names.
Spelling and Punctuation of IUPAC Names
- IUPAC names are almost always written as single words, with notable exception of organic salts and compounds named as acids and acid derivative
Ethanol Ethanoic acid
2-Pentanone Ethanoyl chloride
- Commas are used between two adjacent numbers or letter symbols, and hyphens are used to separate numbers and letter symbols in names.
- Structural prefixes such as cis-, trans-, meso-, sec-, tert-, are italicised and joined to the name by a hyphen. These prefixes are ignored in alphabetising compound names or in capitalising names at the beginning of a sentence.
cis-2-Butene is less suitable than.......
When these words are not part of a chemical name, they are not italicised.
a cis isomer
a meso compound
- Structural prefixes such as di, tri, and tetra- are treated as part of the basic name and therefore are neither italicised nor separated by a hyphen. These prefixes are not taken into account in alphabetising compound names,
- Structural prefixes such as cyclo-, iso-, and neo- are treated as part of the basic name and therefore are neither italicised nor separated by a hyphen. These prefixes are ignored when alphabetising compound names.
Ethylisopropylamine Cyclohexylamine
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