| 释义 |
structural formula
structural formulan. A chemical formula that shows how the atoms and bonds in a molecule are arranged.structural formula n (Chemistry) 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 them: H–C≡C–H is the structural formula of acetylene. See also empirical formula, molecular formula struc′tural for′mula
n. a chemical formula showing the linkage of the atoms in a molecule diagrammatically, as H–O–H. [1885–90] struc·tur·al formula (strŭk′chər-əl) 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 is an acetate (CH3COO) of a phenyl (C6H4) organic acid (COOH). Since structural formulas can get quite long, formulas are usually given with all the atoms totaled up instead (in this case, C9H8O4). Compare molecular formula.Thesaurus| Noun | 1. | structural formula - an expanded molecular formula showing the arrangement of atoms within the moleculemolecular formula - a chemical formula based on analysis and molecular weight |
Translationsstructural formula
structural formula: see formulaformula,
in chemistry, an expression showing the chemical composition of a compound. Formulas of compounds are used in writing the equations (see chemical equations) that represent chemical reactions. Compounds are combinations in fixed proportions of the chemical elements.
..... Click the link for more information. .Structural Formula in chemistry, a means of representing the structure of chemical compounds. Structural formulas reflect the relative position of atoms in molecules and the type of bonds between these atoms. Letters designate the elements, and lines the bonds. In some cases, the formulas include the signs of the total or partial charges on the atoms, and induced and mesomeric electron shifts are indicated by straight and curved arrows. structural formula[′strək·chə·rəl ′fȯr·myə·lə] (chemistry) A system of notation used for organic compounds in which the exact structure, if it is known, is given in schematic representation. structural formula
formula [for´mu-lah] (pl. formulas, for´mulae) (L.) 1. an expression, using numbers or symbols, giving the directions for preparing a compound (such as a medicine) or giving a procedure to follow to obtain a desired result.2. a mixture for feeding an infant, usually with cow's milk as a base, supplemented with vitamins and minerals. Various formulas are available, differing in protein, fat, and carbohydrate content in order to meet the nutritional requirements or restrictions of individual infants.chemical formula a combination of symbols used to express the chemical components of a substance.empirical formula a chemical formula that expresses the proportions of the elements present in a substance.molecular formula a chemical formula expressing the number of each element present in a substance, without indicating how they are linked.spatial formula (stereochemical formula) a chemical formula giving the numbers of atoms of each element present in a molecule of a substance, which atom is linked to which, the types of linkages involved, and the relative positions of the atoms in space.structural formula a chemical formula showing the spatial arrangement of the atoms and the linkage of every atom.struc·tur·al for·mu·laa formula in which the connections of the atoms and groups of atoms, as well as their kind and number, are indicated. Synonym(s): constitutional formula, graphic formulastruc·tur·al for·mu·la (strŭk'shŭr-ăl fōrm'yū-lă) A formula in which the connections of the atoms and groups of atoms, as well as their kind and number, are indicated. structural formula
Related to structural formula: condensed structural formulaWords related to structural formulanoun an expanded molecular formula showing the arrangement of atoms within the moleculeRelated Words |