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isomer    音標拼音: ['ɑɪsəmɚ]
n. 異構體

異構體

isomer
n 1: a compound that exists in forms having different
arrangements of atoms but the same molecular weight

Isomer \I"so*mer\ ([imac]"s[-o]*m[~e]r), n. [See {Isomeric}.]
(Chem.)
A compound which is isomeric with another body or compound; a
compound having the same chemical composition as another
compound; a member of an isomeric series.
[1913 Webster PJC]

Note: An isomer may be a {structural isomer}, in which some
of the atoms are bonded to different atoms (as in
{CH3.CH2.NH2} and {CH3.NH.CH3}), or an {optical
isomer}, in which the number and types of chemical
bonds are identical, but the arrangement of the atoms
in three-dimensional space is different; the latter are
also called {stereoisomers}.
[PJC]

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  • Isomer - Wikipedia
    The English word "isomer" ( ˈ aɪ s əm ər ) is a back-formation from "isomeric", [2] which was borrowed through German isomerisch [3] from Swedish isomerisk; which in turn was coined from Greek ἰσόμερoς isómeros, with roots isos = "equal", méros = "part"
  • Isomer: Definition, Types, Structures, and Examples - Chemistry Learner
    What is an isomer How do isomers differ from one another What are their different types Check out a few examples, along with structures and diagrams
  • Isomer - Definition, Types, Example and Quiz - Biology Dictionary
    Isomer Definition Isomers are two molecules with the same molecular formula but differ structurally Therefore, isomers contain the same number of atoms for each element, but the atomic arrangement differs
  • 8. 1: Types of Isomers - Chemistry LibreTexts
    The cis isomer has the two single hydrogen atoms on the same side of the molecule, while the trans isomer has them on opposite sides of the molecule In both molecules, the bonding order of the atoms is the same
  • Isomer Definition and Examples in Chemistry - ThoughtCo
    Isomer Definition and Examples in Chemistry - ThoughtCo
  • Isomerism | Definition, Types, Examples | Britannica
    Finally, an isomer must be an energy minimum; it must lie in an energy well There are two general types of isomers Constitutional isomers are molecules of different connectivity—analogous to simple bracelets in which the order of red and green beads is different
  • 3. 4. Isomers | Organic Chemistry 1: An open textbook - Lumen Learning
    A conformation (or conformational isomer) of an acyclic molecule is a specific disposition of atoms in the molecule in space within the molecule due to free rotation around bonds
  • What is Isomerism? - BYJUS
    The word “isomer” is derived from the Greek words “isos” and “meros”, which mean “equal parts” This term was coined by the Swedish chemist Jacob Berzelius in the year 1830 Table of Contents Isomerism Types; Structural Isomerism; Recommended Videos; Stereoisomerism; Ionization Isomerism; Frequently Asked Questions – FAQs
  • Types of Isomers: Constitutional, Stereoisomers, Enantiomers, and . . .
    A molecule can be a constitutional isomer, diastereomer, enantiomer, and more (or none!), all at the same time to different molecules, depending on which other molecule(s) you are comparing it to There are three important distinctions to learn, and we will go through them each in turn
  • Examples of Isomers and Their Importance in Chemistry
    An isomer refers to a compound that shares the same molecular formula but has a different arrangement of atoms This variation leads to distinct chemical and physical properties For example, both glucose and fructose share the formula C₆H₁₂O₆; however, their structures differ, resulting in unique behaviors in biological systems





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