Related Experiment Video
Updated: Mar 17, 2026
10:28
Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
Published on: May 27, 2018
9.6K
Water's dual nature and its continuously changing hydrogen bonds
1Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, UK. School of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
Summary
Liquid water exists as a spectrum between ordered and disordered states, driven by hydrogen bond dynamics. Furcated hydrogens, though transient, significantly influence water
Area of Science:
- Physical Chemistry
- Materials Science
- Chemical Physics
Background:
- Liquid water exhibits complex structural and dynamic properties.
- Understanding water's heterogeneity is crucial for various scientific disciplines.
- Existing models often simplify water's continuous nature.
Purpose of the Study:
- To propose a new model for liquid water's structure and dynamics.
- To elucidate the role of hydrogen bonding and coordination in water's heterogeneity.
- To explain the transition between ordered and disordered states in water.
Main Methods:
- Development of a theoretical model for liquid water.
- Analysis of hydrogen bond types (linear vs. furcated).
- Examination of hydrogen-oxygen radial distribution functions and kinetics.
Main Results:
- Liquid water exists as a continuum between ordered (tetrahedral, linear H-bonds) and disordered (multiple coordinations, diffusive dynamics) states.
- Furcated hydrogens, characterized by rapid, barrierless kinetics, are key to water's dynamic heterogeneity.
- Hydrogen bond switching dynamics differentiate ordered and disordered states, linked by diffusive dynamics.
Conclusions:
- The proposed model captures the continuous heterogeneity of liquid water.
- Furcated hydrogens, despite their transient nature, play a critical role in water's dynamics.
- The interplay between linear and furcated hydrogen bonds governs water's structural and dynamic transitions.
More Related Videos
10:52Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
Published on: April 12, 2019
13.5K
10:10Neutron Crystallography Data Collection and Processing for Modelling Hydrogen Atoms in Protein Structures
Published on: December 1, 2020
5.7K
Related Concept Videos
01:04Hydrogen Bonds
15.8K
A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
15.8K
00:26Hydrogen Bonds
136.1K
Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
136.1K
01:07Cohesion
60.3K
Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a...
On a...
60.3K
01:01Introduction to Chemical Bonds
13.2K
Chemical Bonds
The electrons of the outermost energy level determine the energetic stability of the atom and its tendency to form chemical bonds with other atoms. The innermost electron shell has a maximum capacity of two electrons, but the next two electron shells can each have a maximum of eight electrons. This is known as the octet rule, which states that, with the exception of the innermost shell, atoms are most stable energetically when they have eight electrons in their valence shell, the...
The electrons of the outermost energy level determine the energetic stability of the atom and its tendency to form chemical bonds with other atoms. The innermost electron shell has a maximum capacity of two electrons, but the next two electron shells can each have a maximum of eight electrons. This is known as the octet rule, which states that, with the exception of the innermost shell, atoms are most stable energetically when they have eight electrons in their valence shell, the...
13.2K
01:27Role of Water in Human Biology
15.2K
Water is the one of the most significant components of the human body; it plays a crucial role in several physiological activities because of its unique physicochemical properties. Importantly, it helps to regulate body temperature and is the chief component of several body fluids.
Water's Solvent Properties
Since water is a polar molecule with slightly positive and slightly negative charges, ions and polar molecules can readily dissolve in it. Therefore, it is referred to as a solvent, a...
Water's Solvent Properties
Since water is a polar molecule with slightly positive and slightly negative charges, ions and polar molecules can readily dissolve in it. Therefore, it is referred to as a solvent, a...
15.2K
01:08Covalent Bonds
12.3K
Overview
When two atoms share electrons to complete their valence shells, they create a covalent bond. An atom's electronegativity—the force with which shared electrons are pulled towards an atom—determines how the electrons are shared. Molecules formed with covalent bonds can be either polar or nonpolar. Atoms with similar electronegativities form nonpolar covalent bonds; the electrons are shared equally. Atoms with different electronegativities share electrons unequally,...
When two atoms share electrons to complete their valence shells, they create a covalent bond. An atom's electronegativity—the force with which shared electrons are pulled towards an atom—determines how the electrons are shared. Molecules formed with covalent bonds can be either polar or nonpolar. Atoms with similar electronegativities form nonpolar covalent bonds; the electrons are shared equally. Atoms with different electronegativities share electrons unequally,...
12.3K