5.3: Conformational Isomers - Chemistry LibreTexts
网页2021年7月19日 · Study of conformations and conformational equilibria has direct application to explaining the extraordinary specificity exhibited by compounds of biological importance. The compounds of living systems are tailor-made to perform highly specific or even unique functions by virtue of their particular configurations and conformations.
Conformational isomerism - Wikipedia
网页In chemistry, conformational isomerism is a form of stereoisomerism in which the isomers can be interconverted just by rotations about formally single bonds (refer to figure on single bond rotation).
構象異構 - 维基百科，自由的百科全书
网页構象異構[1] （英語： Conformational isomerism，又譯 構型異構[2] 或 結構異構）指由於原子環繞於化學鍵四周，而導致 結構式 相同，卻具有 化學構象 或 構象異構體 之差異的 分子 現象。 有三種效應，會使某些構象異構物較為穩定： 與骨幹相連的各組原子形成交錯（staggered）現象，這是乙烷較常以交叉方式存在的原因。 立體排斥 現象也會使某些構象異構物較常發生。 極性鍵結的 鍵矩 （bond moments）能使某些構象異構物較穩定。 不同 …
Conformational Isomers - ChemTalk
网页Essentially, conformational isomers are different conformations of the same molecule, distinguished solely by the rotation of one or more sigma bonds. Conformational isomerism stems from the adaptability of molecular structure, which is not fixed but rather flexible due to sigma bonds.
8.1: Types of Isomers - Chemistry LibreTexts
网页2022年11月17日 · Conformational Isomers. The C–C single bonds in ethane, propane, and other alkanes are formed by the overlap of an sp 3 hybrid orbital on one carbon atom with an sp 3 hybrid orbital on another carbon atom, forming a σ bond.
Conformational Isomer - an overview | ScienceDirect Topics
网页A conformational isomer is defined as having different spatial arrangements of atoms within a molecule while maintaining the same bond connectivity and configuration, especially if chiral. These variations are achieved through rapid rotations around single bonds, resulting in changes in dihedral angles between specific groups.
Constitutional isomers - 3.4: Isomers - Chemistry LibreTexts
网页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. Example: Ethane (CH 3 CH 3 )
A new fundamental type of conformational isomerism
网页2018年5月21日 · Here we describe a previously unclassified fundamental form of conformational isomerism through four resolved stereoisomers of a transoid (BF)O(BF)-quinoxalinoporphyrin.
Conformational Isomerism - an overview | ScienceDirect Topics
网页When considering the conformational isomerism of polymers, which consists in the rotation of atoms (or atomic groups) around one or several σ -bonds, the data on torsion-potential minima and barriers for low-molecular-mass …
Ch 3 : Conformational isomers - Faculty of Science
网页Conformational isomers (or conformers or rotational isomers or rotamers) are stereoisomers produced by rotation about σ bonds, and are often rapidly interconverting at room temperature. example 1: butane : anti (left) and syn (center). The C2-C3 σ bond rotation is animated (right).
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