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Related Concept Videos

Lewis Structures of Molecular Compounds and Polyatomic Ions02:54

Lewis Structures of Molecular Compounds and Polyatomic Ions

To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
Exceptions to the Octet Rule02:55

Exceptions to the Octet Rule

Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three categories:
Valence Bond Theory02:42

Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
Resonance02:52

Resonance

The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O bonds.
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview01:26

1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview

Nitrous acid and nitric acids are two types of acids containing nitrogen, among which nitrous acid is weaker than nitric acid. Nitrous acid with a pKa value of 3.37 ionizes in water to give a nitrite ion and the hydronium ion.
The nitrous acid is unstable. Hence, it is formed in situ from a solution of sodium nitrite and cold aqueous acids such as hydrochloric or sulfuric acid. In an acidic solution, the –OH group of nitrous acid undergoes protonation to give oxonium ion, followed by water loss...
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism01:37

1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism

Nitrous acid is a relatively weak and unstable acid prepared in situ by the reaction of sodium nitrite and cold, dilute hydrochloric acid. In an acidic solution, the nitrous acid undergoes protonation when it loses water to form a nitrosonium ion—an electrophile. Nitrous acid reacts with primary amines to give diazonium salts. The reaction is called diazotization of primary amines.

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Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
11:10

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model

Published on: May 23, 2018

A structurally characterized nitrous oxide complex of vanadium.

Nicholas A Piro1, Michael F Lichterman, W Hill Harman

  • 1Department of Chemistry, University of California, Berkeley, California 94720, United States.

Journal of the American Chemical Society
|February 4, 2011
PubMed
Summary
This summary is machine-generated.

Researchers activated nitrous oxide (N2O), a potent greenhouse gas, using a novel vanadium-pyrrolide complex. This breakthrough enables reversible N2O binding at room temperature, paving the way for its utilization as a green oxidant.

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Chemiluminescence-based Assays for Detection of Nitric Oxide and its Derivatives from Autoxidation and Nitrosated Compounds
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Published on: February 16, 2022

Area of Science:

  • Inorganic Chemistry
  • Organometallic Chemistry
  • Green Chemistry

Background:

  • Nitrous oxide (N2O) is a potent greenhouse gas with significant potential as an environmentally friendly oxidant.
  • The high kinetic stability and poor ligand properties of N2O have historically limited its activation and utilization by metal centers.
  • Well-characterized metal-N2O complexes are rare, hindering the development of N2O-based catalytic processes.

Purpose of the Study:

  • To develop a novel metal complex capable of activating and reversibly binding nitrous oxide (N2O).
  • To characterize the structure and bonding of the resulting metal-N2O complex.
  • To explore the potential of this system for utilizing N2O as a green oxidant.

Main Methods:

  • Synthesis of a vanadium-pyrrolide complex.
  • Reversible binding studies of nitrous oxide (N2O) at room temperature.
  • Single-crystal X-ray diffraction for structural determination.
  • Vibrational spectroscopy (e.g., IR, Raman) for characterization.
  • Density Functional Theory (DFT) calculations to support structural assignment and bonding analysis.

Main Results:

  • A vanadium-pyrrolide system capable of reversibly binding N2O at room temperature was successfully synthesized.
  • The first single-crystal X-ray structure of a metal-N2O complex of this type was obtained.
  • Characterization data, including vibrational spectroscopy and DFT calculations, strongly support the assignment of a linear, N-bound metal-N2O complex.

Conclusions:

  • The developed vanadium-pyrrolide complex represents a significant advancement in the activation of nitrous oxide.
  • This system overcomes previous limitations in N2O ligand properties, enabling reversible binding at room temperature.
  • The findings open new avenues for the underutilized potential of N2O as a thermodynamically potent and environmentally green oxidant in catalysis.