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

2° Amines to N-Nitrosamines: Reaction with NaNO2

2° Amines to N-Nitrosamines: Reaction with NaNO₂

Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.

Structure of Amines

Structure of Amines

The hybridized nitrogen atom in amines possesses a lone pair of electrons and is bound to three substituents with a bond angle of around 108°, which is less than the tetrahedral angle of 109.5°. However, the C–N–H bond angle is slightly larger at 112°, with a carbon–nitrogen bond length of 147 pm. This carbon–nitrogen bond length of of amines is longer than the carbon–oxygen bond of alcohols (143 pm) but shorter than alkanes’ carbon–carbon bond (154 pm). These aspects are illustrated in Figure...

Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule

Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule

In the AX proton spin system, proton A can sense the two spin states of a coupled proton X, resulting in a doublet NMR signal with two peaks of equal (1:1) intensity. When proton A is coupled to two equivalent protons (AX2 spin system), the spin states of each X can be aligned with or against the external field, creating three possible scenarios. This results in a 1:2:1 triplet signal, where the central peak corresponds to the chemical shift of A and is twice as large or intense as the others.

¹H NMR: Pople Notation

¹H NMR: Pople Notation

The Pople nomenclature system classifies spin systems based on the difference between their chemical shifts. Coupled spins are denoted by capital letters with subscripts indicating the number of equivalent nuclei. When the coupled nuclei have well-separated chemical shifts, they are assigned letters that are far apart in the alphabet, such as A and X. When the difference in chemical shifts is small, coupled nuclei are named using adjacent letters of the alphabet (AB, MN, or XY).
A proton...

You might also read

Related Articles

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

Sort by

Same author

Synthesis, physicochemical and pharmacological characterizations of a tetra-[methylimidazolium] dihydrogen decavanadate, inhibiting the IGR39 human melanoma cells development.

Journal of inorganic biochemistry·2024

Same author

One-pot synthesis, structural investigation, antitumor activity and molecular docking approach of two decavanadate compounds.

Journal of inorganic biochemistry·2024

Same author

Zinc Tetrafluoroborate-Mediated Ring Expansion of <i>trans</i>-Aziridine-2-carboxylates to <i>cis</i>-2-Iminothiazolidines and <i>cis</i>-Thiazolidine-2-iminium Tetrafluoroborates and Evaluation of Antimicrobial Activity.

ACS omega·2023

Same author

Structure, Optical and Magnetic Properties of Two Isomeric 2-Bromomethylpyridine Cu(II) Complexes [Cu(C<sub>6</sub>H<sub>9</sub>NBr)<sub>2</sub>(NO<sub>3</sub>)<sub>2</sub>] with Very Different Binding Motives.

Molecules (Basel, Switzerland)·2023

Same author

Biosynthesis and Characterization of Silver Nanoparticles from the Extremophile Plant <i>Aeonium haworthii</i> and Their Antioxidant, Antimicrobial and Anti-Diabetic Capacities.

Nanomaterials (Basel, Switzerland)·2023

Same author

First Report of the Biosynthesis and Characterization of Silver Nanoparticles Using <i>Scabiosa atropurpurea</i> subsp. <i>maritima</i> Fruit Extracts and Their Antioxidant, Antimicrobial and Cytotoxic Properties.

Nanomaterials (Basel, Switzerland)·2022

Search research articles

Related Experiment Video

Updated: May 26, 2026

Combining Double Fluorescence In Situ Hybridization with Immunolabelling for Detection of the Expression of Three Genes in Mouse Brain Sections

Combining Double Fluorescence In Situ Hybridization with Immunolabelling for Detection of the Expression of Three Genes in Mouse Brain Sections

Published on: March 26, 2016

AgNa(2)Mo(3)O(9)AsO(4).

Hamadi Hamza¹, Mohamed Faouzi Zid, Ahmed Driss

¹Laboratoire de Matériaux et Cristallochimie, Faculté des Sciences, Université de Tunis-ElManar, 2092 El-Manar, Tunis, Tunisia.

Acta Crystallographica. Section E, Structure Reports Online

|January 6, 2012

Summary

Researchers synthesized silver disodium trimolybdenum(VI) nonaoxide arsenate using a solid-state reaction. The study reveals a novel infinite ribbon structure formed by linked arsenate and molybdate polyhedra, with silver and sodium ions occupying interstitial sites.

More Related Videos

Chemo-enzymatic Synthesis of N-glycans for Array Development and HIV Antibody Profiling

Chemo-enzymatic Synthesis of N-glycans for Array Development and HIV Antibody Profiling

Published on: February 5, 2018

Designing Porous Silicon Films as Carriers of Nerve Growth Factor

Designing Porous Silicon Films as Carriers of Nerve Growth Factor

Published on: January 25, 2019

Related Experiment Videos

Last Updated: May 26, 2026

Combining Double Fluorescence In Situ Hybridization with Immunolabelling for Detection of the Expression of Three Genes in Mouse Brain Sections

Combining Double Fluorescence In Situ Hybridization with Immunolabelling for Detection of the Expression of Three Genes in Mouse Brain Sections

Published on: March 26, 2016

Chemo-enzymatic Synthesis of N-glycans for Array Development and HIV Antibody Profiling

Chemo-enzymatic Synthesis of N-glycans for Array Development and HIV Antibody Profiling

Published on: February 5, 2018

Designing Porous Silicon Films as Carriers of Nerve Growth Factor

Designing Porous Silicon Films as Carriers of Nerve Growth Factor

Published on: January 25, 2019

Area of Science:

Inorganic Chemistry
Solid-State Chemistry
Crystallography

Background:

Molybdenum-arsenate compounds are of interest due to their diverse structural possibilities.
Understanding the synthesis and structure of novel inorganic materials is crucial for materials science.

Purpose of the Study:

To synthesize and characterize a new inorganic compound, silver disodium trimolybdenum(VI) nonaoxide arsenate.
To elucidate the crystal structure and atomic arrangement of the synthesized material.

Main Methods:

Solid-state reaction at 808 K for compound preparation.
X-ray crystallography for structural determination.
Refinement of chemical composition.

Main Results:

Successful synthesis of silver disodium trimolybdenum(VI) nonaoxide arsenate (AgNa(2)Mo(3)O(9)AsO(4)).
Discovery of an infinite (Mo(3)AsO(13))(n) ribbon structure along the c axis.
Identification of partially occupied silver and sodium ion sites within the inter-ribbon space.

Conclusions:

The study presents a novel inorganic compound with a unique one-dimensional ribbon framework.
The structural analysis provides insights into the coordination and bonding within molybdenum-arsenate systems.
The refined composition Ag(1.06(1))Na(1.94(1))Mo(3)O(9)AsO(4) confirms the material's stoichiometry.