Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Structure and Nomenclature of Ethers

Structure and Nomenclature of Ethers

Structure and Bonding
Ethers are organic compounds with an ether functional group which is characterized by an oxygen atom connected to two — identical or different — alkyl, aryl, or vinyl groups. The C–O–C linkage in dimethyl ether — the simplest ether — has an approximately tetrahedral bond angle of 110.3 degrees. The oxygen atom is sp3- hybridized, with the C–O distance being about 140 pm.
Classification of Ethers
Based on their attached substituent groups, ethers can be classified into two...

Nomenclature of Aromatic Compounds with Multiple Substituents

Nomenclature of Aromatic Compounds with Multiple Substituents

When more than one substituent is present on the benzene ring, the IUPAC nomenclature depends on the number of substituents present.
For disubstituted benzene derivatives, with two groups attached to the benzene ring, three constitutional isomers are possible. For example, consider dimethyl benzene, often called xylene, where the second methyl group can be substituted at the second, third, or fourth carbon. The relative position of the substituents is represented by prefixes ortho, meta, or...

Structure and Nomenclature of Epoxides

Structure and Nomenclature of Epoxides

Cyclic ethers are heterocyclic compounds with an oxygen atom in the ring along with carbon atoms. They are named depending on the number of carbon atoms present in their ring system. Cyclic ethers with a three-membered ring system are called “oxirane”, four-membered ring systems as “oxetane”, five-membered ring systems as “oxolane”, and six-membered ring systems as “oxane”. The cyclic structure of these rings imposes angle strain, and this strain is more in the ring having a smaller number of...

E1 Reaction: Stereochemistry and Regiochemistry

E1 Reaction: Stereochemistry and Regiochemistry

One of the critical aspects of the E1 reaction mechanism, as also observed in E2, is the regiochemistry, with multiple regioisomers obtained as products. In the example discussed, the presence of water as a weak base favors elimination over substitution to generate two alkenes. Given that alkenes’ stability increases with the number of alkyl groups across the double bond, typically, E1 reactions lead to the Zaitsev product, for this is more substituted and stable than the Hofmann product.

Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

Ideally, an unpaired electron shows a single peak in the EPR spectrum due to the transition between the two spin energy states. However, coupling interactions can occur between the spins of the unpaired electron and any neighboring spin-active nuclei. This hyperfine coupling results in hyperfine splitting, where the EPR signal is split into multiplets. The signals split into 2nI + 1 peaks, where n is the number of equivalent nuclei and I is the nuclear spin. These splitting patterns provide...

Acidity and Basicity of Alcohols and Phenols

Acidity and Basicity of Alcohols and Phenols

Like water, alcohols are weak acids and bases. This is attributed to the polarization of the O–H bond making the hydrogen partially positive. Moreover, the electron pairs on the oxygen atom of alcohol make it both basic and nucleophilic. Protonation of an alcohol converts hydroxide, a poor leaving group, into water—a good one. The two acid–base equilibria corresponding to ethanol are depicted below.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

The mechanics behind DNA sequence-dependent properties of the nucleosome.

Nucleic acids research·2012

Same author

The endoplasmic reticulum is a target organelle for trivalent dimethylarsinic acid (DMAIII)-induced cytotoxicity.

Toxicology and applied pharmacology·2012

Same author

(E)-1-{4-[Bis(4-bromo-phen-yl)meth-yl]piperazin-1-yl}-3-(4-eth-oxy-phen-yl)prop-2-en-1-one.

Acta crystallographica. Section E, Structure reports online·2012

Same author

(E)-3-(1,3-Benzodioxol-5-yl)-1-{4-[bis-(4-meth-oxy-phen-yl)meth-yl]piperazin-1-yl}prop-2-en-1-one.

Acta crystallographica. Section E, Structure reports online·2012

Same author

Economic evaluation of first-line treatments for metastatic renal cell carcinoma: a cost-effectiveness analysis in a health resource-limited setting.

PloS one·2012

Same author

Metabolism studies of casticin in rats using HPLC-ESI-MS(n).

Biomedical chromatography : BMC·2012

Same journal

Crystal structure of 1-(piperidin-1-yl)butane-1,3-dione.

Acta crystallographica. Section E, Structure reports online·2015

Same journal

Crystal structure of methyl 1-methyl-3,5-diphenyl-7-tosyl-3,6,7,11b-tetra-hydro-pyrazolo-[4',3':5,6]pyrano[3,4-c]quinoline-5a(5H)-carboxyl-ate.

Acta crystallographica. Section E, Structure reports online·2015

Same journal

Crystal structure of 4-amino-1-(4-methyl-benz-yl)pyridinium bromide.

Acta crystallographica. Section E, Structure reports online·2015

Same journal

Crystal structure of (Z)-3-benz-yloxy-6-[(2-hy-droxy-anilino)methyl-idene]cyclo-hexa-2,4-dien-1-one.

Acta crystallographica. Section E, Structure reports online·2015

Same journal

Crystal structure of bis-(1-benzyl-1H-1,2,4-triazole) perchloric acid monosolvate.

Acta crystallographica. Section E, Structure reports online·2015

Same journal

Crystal structure of 2-(di-phenyl-phos-phanyl)phenyl 4-(hy-droxy-meth-yl)benzoate.

Acta crystallographica. Section E, Structure reports online·2015

See all related articles

Search research articles

Related Experiment Video

Updated: May 24, 2026

Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate

Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate

Published on: June 21, 2017

(E)-1-{4-[Bis(4-bromo-phen-yl)meth-yl]piperazin-1-yl}-3-(4-methyl-phen-yl)prop-2-en-1-one.

Yan Zhong, Xiaoping Zhang, Bin Wu

Acta Crystallographica. Section E, Structure Reports Online

|March 14, 2012

Summary

This summary is machine-generated.

This study details the molecular structure of a novel organic compound, C(27)H(26)Br(2)N(2)O. Key findings include the piperazine ring conformation and the spatial arrangement of its bromo-benzene substituents.

More Related Videos

A Two-Step Protocol for Umpolung Functionalization of Ketones Via Enolonium Species

A Two-Step Protocol for Umpolung Functionalization of Ketones Via Enolonium Species

Published on: August 16, 2018

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles

Published on: August 22, 2018

Related Experiment Videos

Last Updated: May 24, 2026

Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate

Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate

Published on: June 21, 2017

A Two-Step Protocol for Umpolung Functionalization of Ketones Via Enolonium Species

A Two-Step Protocol for Umpolung Functionalization of Ketones Via Enolonium Species

Published on: August 16, 2018

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles

Published on: August 22, 2018

Area of Science:

Organic Chemistry
Crystallography
Molecular Structure

Background:

Understanding the three-dimensional arrangement of atoms in organic molecules is crucial for predicting their properties and reactivity.
Piperazine derivatives are important scaffolds in medicinal chemistry and materials science.
Detailed structural analysis provides fundamental insights into molecular behavior.

Purpose of the Study:

To elucidate the precise three-dimensional structure of the title compound, C(27)H(26)Br(2)N(2)O.
To characterize the conformation of the piperazine ring and the orientation of substituents.
To investigate intermolecular interactions within the crystal lattice.

Main Methods:

Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
The conformation of the piperazine ring was analyzed.
Intermolecular interactions, specifically C-H⋯O hydrogen bonds, were identified and characterized.

Main Results:

The piperazine ring adopts a chair conformation with equatorial N-C bonds.
The C=C double bond exhibits an E configuration.
A dihedral angle of 83.0(4)° was observed between the two bromo-benzene rings.
Inversion dimers formed via C-H⋯O hydrogen bonds create R(2)(2)(10) loops in the crystal structure.

Conclusions:

The crystal structure of C(27)H(26)Br(2)N(2)O has been fully determined.
The specific conformational preferences and intermolecular interactions provide a basis for understanding the solid-state properties of this compound.
This structural data can inform future synthetic modifications and applications of related molecules.