Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

The Nitrogen Cycle01:49

The Nitrogen Cycle

60.8K
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
60.8K
Overview of Nitrogen Metabolism01:20

Overview of Nitrogen Metabolism

11.5K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of  ammonia, ammonium ions, nitrate, nitrite, or  nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
11.5K
Inorganic Nitrogen Assimilation01:22

Inorganic Nitrogen Assimilation

582
Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...
582
The Extracellular Matrix01:42

The Extracellular Matrix

89.6K
Overview
89.6K
Chirality at Nitrogen, Phosphorus, and Sulfur02:30

Chirality at Nitrogen, Phosphorus, and Sulfur

7.1K
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...
7.1K
Nucleic Acids02:43

Nucleic Acids

50.9K
Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes,...
50.9K

You might also read

Related Articles

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

Sort by
Same author

Molecular Structure, Matrix-Isolation IR Spectrum and UV-Induced Transformations of 2-Amino-5-(4-Methoxyphenyl)-1,3,4-Oxadiazole.

Molecules (Basel, Switzerland)·2025
Same author

Molecular and Crystal Structure, Spectroscopy, and Photochemistry of a Dispiro Compound Bearing the Tetraoxane Pharmacophore.

Chemistry (Weinheim an der Bergstrasse, Germany)·2023
Same author

Structure, Vibrational Spectra, and Cryogenic MatrixPhotochemistry of 6-Bromopyridine-2-carbaldehyde: From the Single Molecule of the Compound to the Neat Crystalline Material.

Molecules (Basel, Switzerland)·2023
Same author

Correction to "Matrix Isolation Study of Fumaric and Maleic Acids in Solid Nitrogen".

The journal of physical chemistry. A·2022
Same author

Matrix Isolation Study of Fumaric and Maleic Acids in Solid Nitrogen.

The journal of physical chemistry. A·2022
Same author

Structure and IR Spectra of 3(5)-Aminopyrazoles and UV-Induced Tautomerization in Argon Matrix.

Molecules (Basel, Switzerland)·2021

Related Experiment Video

Updated: Feb 15, 2026

On-line Analysis of Nitrogen Containing Compounds in Complex Hydrocarbon Matrixes
07:49

On-line Analysis of Nitrogen Containing Compounds in Complex Hydrocarbon Matrixes

Published on: August 5, 2016

11.2K

Formic acid dimers in a nitrogen matrix.

Susy Lopes1, Rui Fausto1, Leonid Khriachtchev2

  • 1Department of Chemistry, University of Coimbra, Rua Larga, P-3004-535 Coimbra, Portugal.

The Journal of Chemical Physics
|January 22, 2018
PubMed
Summary
This summary is machine-generated.

Formic acid dimers were studied using infrared spectroscopy in a nitrogen matrix, revealing new cis-cis dimer structures and conformational changes. This research enhances understanding of formic acid dimer dynamics and stability.

More Related Videos

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
10:44

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals

Published on: April 19, 2019

11.7K
Chemical Dimerization-Induced Protein Condensates on Telomeres
08:52

Chemical Dimerization-Induced Protein Condensates on Telomeres

Published on: April 12, 2021

3.7K

Related Experiment Videos

Last Updated: Feb 15, 2026

On-line Analysis of Nitrogen Containing Compounds in Complex Hydrocarbon Matrixes
07:49

On-line Analysis of Nitrogen Containing Compounds in Complex Hydrocarbon Matrixes

Published on: August 5, 2016

11.2K
Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
10:44

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals

Published on: April 19, 2019

11.7K
Chemical Dimerization-Induced Protein Condensates on Telomeres
08:52

Chemical Dimerization-Induced Protein Condensates on Telomeres

Published on: April 12, 2021

3.7K

Area of Science:

  • Physical Chemistry
  • Spectroscopy
  • Computational Chemistry

Background:

  • Formic acid dimers exist in trans-trans, trans-cis, and cis-cis conformations.
  • Previous studies in argon matrices had limited observation times for higher-energy conformers.

Purpose of the Study:

  • To investigate formic acid dimers using infrared spectroscopy in a nitrogen matrix.
  • To characterize new dimer structures and conformational processes.
  • To explore the stabilization and decay mechanisms of different conformers.

Main Methods:

  • Infrared spectroscopy in a nitrogen matrix.
  • Ab initio calculations.
  • Selective vibrational excitation using infrared light.
  • Observation of tunneling decays.

Main Results:

  • Identified three trans-trans, four trans-cis, and three cis-cis formic acid dimers.
  • Observed significantly longer lifetimes for cis conformers in nitrogen matrix (∼11 h).
  • Reported cis-cis dimers of ordinary formic acid for the first time.
  • Documented new conformational processes, including cis-cis dimer formation from trans-cis dimers upon excitation.
  • Detected tunneling decays of various dimers in the dark, including cis-cis dimers.

Conclusions:

  • Nitrogen matrix enables extended observation of high-energy formic acid dimer conformers.
  • New spectroscopic data and conformational pathways for formic acid dimers have been elucidated.
  • The study provides novel insights into the stability and dynamics of cis-cis formic acid dimers.