- a chemical formula showing the linkage of the atoms in a molecule diagrammatically, as H–O–H.
Origin of structural formula
First recorded in 1885–90
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- a chemical formula showing the composition and structure of a molecule. The atoms are represented by symbols and the structure is indicated by showing the relative positions of the atoms in space and the bonds between themH–C≡C–H is the structural formula of acetylene See also empirical formula, molecular formula
- A chemical formula that shows the number and kinds of atoms in a molecule and how the atoms and bonds in the molecule are arranged.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A chemical formula that shows how the atoms making up a compound are arranged within the molecule. For example, the structural formula of aspirin is CH3COOC6H4COOH, indicating that it consists of an acetyl group (CH3COO) attached to the carboxylic acid (COOH) of a phenyl group (C6H4). Compare empirical formula molecular formula.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.