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stereochemistry

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stereochemistry
stereochemistry (ˌstɛriːəʊˈkɛmɪstrɪ) [f. stereo- + chemistry, after G. stereochemie (V. Meyer 1890, in Ber. d. Deut. Chem. Ges. XXIII. 568), stereochemisch adj. (Auwers & Meyer 1888, in Ibid. XXI. 789).] That department of chemistry which deals with theoretical differences in the relative position i... Oxford English Dictionary
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Dynamic stereochemistry
In chemistry, dynamic stereochemistry studies the effect of stereochemistry on the reaction rate of a chemical reaction. Stereochemistry Chemical kinetics wikipedia.org
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7.4: SN1 Reaction Mechanism, Energy Diagram and Stereochemistry ...
S N 1 Reaction Mechanism. The reaction between tert-butylbromide and water proceeds via the SN1 mechanism.Unlike S N 2 that is a single-step reaction, S N 1 reaction involves multiple steps. Reaction: (CH 3) 3 CBr + H 2 O → (CH 3) 3 COH + HBr. In step 1, C—Br bond breaks and Br departs with the bonding electron pair to produce a tertiary carbocation and bromide anion Br -.
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Stereoselectivity
The quality of stereoselectivity is concerned solely with the products, and their stereochemistry. See also Dynamic stereochemistry Torquoselectivity Regioselectivity Chemoselectivity Notes and references Stereochemistry wikipedia.org
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7.2: SN2 Reaction Mechanism, Energy Diagram and Stereochemistry
Energy Diagram of S N 2 Mechanism. The energy changes for the above reaction can be represented in the energy diagram shown in Fig. 7.1.S N 2 is a single-step reaction, so the diagram has only one curve. The products CH 3 OH and Br - are in lower energy than the reactants CH 3 Br and OH -, indicates that the overall reaction is exothermic and the products are more stable.
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Sn2 mechanism: kinetics and substrate (video) | Khan Academy
The SN2 mechanism is a concerted mechanism because the nucleophile attacks the electrophile, at the same time we get loss of a leaving groups. There's only one step in this mechanism. Let's say we did a series of experiments to determine the rate law for this reaction. Remember from general chemistry, rate laws are determined experimentally.
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Epimer
In stereochemistry, an epimer is one of a pair of diastereomers. References Stereochemistry wikipedia.org
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Klyne–Prelog system
In stereochemistry, the Klyne–Prelog system (named for William Klyne and Vladimir Prelog) for describing conformations about a single bond offers a more References Stereochemistry Chemical nomenclature wikipedia.org
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Chapter 5 Stereochemistry （立体 化学） : Chiral Molecules （手性分 子） 5.1 ...
Slide 1 Slide 2 Chapter 5 Stereochemistry （立体 化学） : Chiral Molecules （手性分 子） 5.1 Isomerism : Constitutional isomers and Stereoisomers ( 构形异构与立体异构）…
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Structural insights into the stereochemistry of the ... - Nature
Cyclooxygenases are bifunctional enzymes that catalyse the first committed step in the synthesis of prostaglandins, thromboxanes and other eicosanoids1,2,3. The two known cyclooxygenases isoforms ...
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Anticlinal
, a torsion angle between 90° to 150°, and –90° to –150°; see Alkane_stereochemistry Anticlinal division (botany) See also Weald–Artois Anticline Mareuil Anticline La Tour-Blanche Anticline Usk Anticline Fold (geology) Detachment fold Stereochemistry wikipedia.org
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Studies on Stereochemistry of Adenosine 3' , 5'-Cycloalkylphosphonate
Language Label Description Also known as; English: Studies on Stereochemistry of Adenosine 3' , 5'-Cycloalkylphosphonate. article published in 1993
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立体异构体，对映异构体，非对映异构体，组成异构体和内消旋化合物 (视频) | 立体化学 | 可汗学院
我们先确定它们不一样 这里 氢指向外 这里的氢指向内 这里 氢指向内 而这里氢指向外 所以这两个不是同一个分子 虽然组成原子的连接方式是一样的 但是立体构型不一样 所以它们是立体异构体 我们再来看看是不是对映体 仔细观察一下 如果在这里放面镜子 没 ...
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Staggered conformation
See also Alkane stereochemistry Eclipsed conformation References Stereochemistry de:Konformation wikipedia.org
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Clerodane diterpene
at the decalin junction (trans or cis) and the relative stereochemistry of the substituents at C-8 and C-9 (trans or cis). The absolute stereochemistry of the clerodanes is classified as neo (shown below) or ent-neo (enantiomeric to neo). wikipedia.org
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