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

Ionic Crystal Structures02:42

Ionic Crystal Structures

16.6K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
16.6K
X-ray Crystallography02:18

X-ray Crystallography

25.5K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
25.5K
Metallic Solids02:37

Metallic Solids

20.3K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
20.3K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

30.1K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
30.1K

You might also read

Related Articles

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

Sort by
Same author

The impact of metastability on the high-pressure behavior of cerium.

Nature communications·2026
Same author

Compression of Ribavirin to 35 GPa.

Crystal growth & design·2026
Same author

Phase relationships in homoleptic complexes of XeF<sub>2</sub>.

IUCrJ·2026
Same author

Water Dictates Structural Varieties of Liquid and Glassy Ammonia Dihydrate.

The journal of physical chemistry letters·2026
Same author

Vibrational Spectroscopy and Computational Studies of Cubane-1,4-Dicarboxylic Acid.

Molecules (Basel, Switzerland)·2026
Same author

Polymorphism and Negative Linear Compressibility in Pyrazine-d4.

Crystal growth & design·2026

Related Experiment Video

Updated: Dec 21, 2025

High Pressure Single Crystal Diffraction at PX^2
11:32

High Pressure Single Crystal Diffraction at PX^2

Published on: January 16, 2017

22.0K

Alloxan under pressure-squeezing an extremely dense molecular crystal structure.

Nicholas P Funnell1, Craig L Bull1, Christopher J Ridley1

  • 1ISIS Neutron and Muon Facility, Rutherford Appleton Laboratory, Chilton, UK. nick.funnell@stfc.ac.uk.

Chemical Communications (Cambridge, England)
|May 12, 2020
PubMed
Summary

High-pressure neutron diffraction revealed alloxan

More Related Videos

X-Ray Crystallography to Study the Oligomeric State Transition of the Thermotoga maritima M42 Aminopeptidase TmPep1050
11:27

X-Ray Crystallography to Study the Oligomeric State Transition of the Thermotoga maritima M42 Aminopeptidase TmPep1050

Published on: May 13, 2020

4.2K
Synthesis and Microdiffraction at Extreme Pressures and Temperatures
07:26

Synthesis and Microdiffraction at Extreme Pressures and Temperatures

Published on: October 7, 2013

11.6K

Related Experiment Videos

Last Updated: Dec 21, 2025

High Pressure Single Crystal Diffraction at PX^2
11:32

High Pressure Single Crystal Diffraction at PX^2

Published on: January 16, 2017

22.0K
X-Ray Crystallography to Study the Oligomeric State Transition of the Thermotoga maritima M42 Aminopeptidase TmPep1050
11:27

X-Ray Crystallography to Study the Oligomeric State Transition of the Thermotoga maritima M42 Aminopeptidase TmPep1050

Published on: May 13, 2020

4.2K
Synthesis and Microdiffraction at Extreme Pressures and Temperatures
07:26

Synthesis and Microdiffraction at Extreme Pressures and Temperatures

Published on: October 7, 2013

11.6K

Area of Science:

  • Materials Science
  • Crystallography
  • Organic Chemistry

Background:

  • Alloxan is a small organic molecule with an already dense crystal structure.
  • Understanding the behavior of organic materials under extreme conditions is crucial for materials science.

Purpose of the Study:

  • To investigate the crystal structure of alloxan under high pressure.
  • To determine the pressure-induced structural changes and density limits of alloxan.

Main Methods:

  • High-pressure neutron diffraction was employed to study alloxan's crystal structure.
  • The experiment involved varying pressure conditions to observe structural transitions.

Main Results:

  • Alloxan's crystal structure remained stable under increasing pressure.
  • A record density of 2.36 g cm-3 was achieved for this class of organic material.
  • The crystal structure became unstable and amorphised above approximately 6.5 GPa.

Conclusions:

  • Alloxan exhibits remarkable structural stability and high-density packing under pressure.
  • The study establishes a new density benchmark for organic materials containing carbon, hydrogen, nitrogen, and oxygen.
  • The observed amorphisation provides insights into the pressure-induced phase transitions of organic crystals.