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Related Concept Videos

Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
Structure and Nomenclature of Thiols and Sulfides02:17

Structure and Nomenclature of Thiols and Sulfides

Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are generally represented as RSH, where R is an alkyl substituent and —SH is the functional group. On the other hand, in sulfides, the central sulfur atom is bonded to two hydrocarbon groups on either side. Depending upon the type of group, sulfides can be either symmetrical or asymmetrical. Both thiols and sulfides display a bent geometry, similar...
Nomenclature of Carboxylic Acid Derivatives: Acid Halides, Esters, and Acid Anhydrides01:16

Nomenclature of Carboxylic Acid Derivatives: Acid Halides, Esters, and Acid Anhydrides

Naming Acid Halides
The IUPAC and common names of acid halides are derived from the corresponding carboxylic acids, by changing “ic acid” to “yl halide.” For example, as shown below, the IUPAC name ethanoyl chloride is derived from ethanoic acid, and the common name, acetyl chloride, is obtained from acetic acid.
Depolarizing Blockers: Pharmocokinetics01:19

Depolarizing Blockers: Pharmocokinetics

Depolarizing blockers are administered through intravenous injection. Succinylcholine is the most common choice of depolarizing blockers in emergency clinical practices. Although they have a rapid onset, they readily diffuse away from the motor end plate into the extracellular fluid. They are metabolized by enzymes such as liver butyrylcholinesterase and plasma pseudocholinesterases. This produces a short duration of action, typically 5-10 minutes long, unlike nondepolarizing blockers, which...
Chirality at Nitrogen, Phosphorus, and Sulfur02:30

Chirality at Nitrogen, Phosphorus, and Sulfur

Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
Nucleophilic Aromatic Substitution: Addition–Elimination (SNAr)01:30

Nucleophilic Aromatic Substitution: Addition–Elimination (SNAr)

Nucleophilic substitution in aromatic compounds is feasible in substrates bearing strong electron-withdrawing substituents positioned ortho or para to the leaving group. The reaction proceeds via two steps: the addition of the nucleophile and the elimination of the leaving group.
The reaction begins with an attack of the nucleophile on the carbon that holds the leaving group. This results in the delocalization of the π electrons over the ring carbons. The resonance interaction between the...

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Crystal structures of three <i>N</i>-acyl-hydrazone isomers.

Acta crystallographica. Section E, Crystallographic communications·2021
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Crystal structures and the Hirshfeld surface analysis of <i>(E)</i>-4-nitro-<i>N</i>'-(<i>o</i>-chloro, <i>o</i>- and <i>p</i>-methyl-benzyl-idene)benzene-sulfono-hydrazides.

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Crystal structure and Hirshfeld surface analysis of two (<i>E</i>)-<i>N</i>'-(<i>para</i>-substituted benzyl-idene) 4-chloro-benzene-sulfono-hydrazides.

Acta crystallographica. Section E, Crystallographic communications·2018
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Crystal structure and Hirshfeld surface analysis of (<i>E</i>)-<i>N</i>'-[4-(piperidin-1-yl)benzyl-idene]aryl-sulfono-hydrazides.

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Crystal structure and Hirshfeld surface analysis of (<i>Z</i>)-4-chloro-<i>N</i>'-(4-oxo-thia-zol-idin-2-yl-idene)benzene-sulfono-hydrazide monohydrate.

Acta crystallographica. Section E, Crystallographic communications·2018
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Crystal structure and Hirshfeld surface analysis of (<i>E</i>)-<i>N</i>'-benzyl-idene-4-chloro-benzene-sulfono-hydrazide and of its (<i>E</i>)-4-chloro-<i>N</i>'-(<i>ortho</i>- and <i>para</i>-methyl-benzyl-idene)benzene-sulfono-hydrazide derivatives.

Acta crystallographica. Section E, Crystallographic communications·2018

Related Experiment Video

Updated: Jun 1, 2026

Microwave-assisted One-pot Synthesis of N-succinimidyl-4-[18F]fluorobenzoate ([18F]SFB)
08:33

Microwave-assisted One-pot Synthesis of N-succinimidyl-4-[18F]fluorobenzoate ([18F]SFB)

Published on: June 28, 2011

N-(3-Methyl-phen-yl)succinimide.

B S Saraswathi, B Thimme Gowda, Sabine Foro

    Acta Crystallographica. Section E, Structure Reports Online
    |May 18, 2011
    PubMed
    Summary
    This summary is machine-generated.

    The crystal structure of a novel organic compound, C(11)H(11)NO(2), was determined. Analysis revealed a significant dihedral angle of 52.5 degrees between its constituent ring planes.

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    Synthesis and Bioconjugation of Thiol-Reactive Reagents for the Creation of Site-Selectively Modified Immunoconjugates
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    Synthesis and Bioconjugation of Thiol-Reactive Reagents for the Creation of Site-Selectively Modified Immunoconjugates

    Published on: March 6, 2019

    Area of Science:

    • Crystallography
    • Organic Chemistry
    • Molecular Structure Analysis

    Background:

    • Understanding the three-dimensional arrangement of atoms in organic molecules is crucial for predicting their properties and reactivity.
    • The specific spatial orientation of aromatic rings influences electronic interactions and intermolecular forces.

    Purpose of the Study:

    • To elucidate the crystal structure of the novel organic compound C(11)H(11)NO(2).
    • To quantify the dihedral angle between the ring systems within the molecule.

    Main Methods:

    • Single-crystal X-ray diffraction was employed to collect diffraction data.
    • The crystal structure was solved and refined using standard crystallographic software.

    Main Results:

    • The molecular formula of the compound was confirmed as C(11)H(11)NO(2).
    • The dihedral angle between the two ring planes in the crystal structure was precisely determined to be 52.5(1)°.

    Conclusions:

    • The determined dihedral angle provides critical information about the molecule's conformation in the solid state.
    • This structural data is essential for computational modeling and understanding structure-activity relationships.