Search research articles

Related Concept Videos

Ionic Crystal Structures

Ionic Crystal Structures

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...

Weak Acid Solutions

Weak Acid Solutions

Few compounds act as strong acids. A far greater number of compounds behave as weak acids and only partially react with water, leaving a large majority of dissolved molecules in their original form and generating a relatively small amount of hydronium ions. Weak acids are commonly encountered in nature, being the substances partly responsible for the tangy taste of citrus fruits, the stinging sensation of insect bites, and the unpleasant smells associated with body odor. A familiar example of a...

Ionic Bonding and Electron Transfer

Ionic Bonding and Electron Transfer

Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.

Lewis Acids and Bases

Lewis Acids and Bases

This lesson delves into Lewis acids and bases in the context of the octet rule for electron-deficient compounds. Here, the concept is discussed, emphasizing the group 13 elements like boron or aluminium. Since group 13 elements possess three valence electrons, they form trivalent compounds with a sextet of electrons and a vacant orbital for the central atom. Consequently, these electron-deficient compounds accept electrons from other species to complete their octet in a chemical reaction. They...

Ionic Association

Ionic Association

The ionic association is the association of oppositely charged ions in an electrolyte solution to form ion pairs. Bjerrum defined ion pairs as two oppositely charged ions whose electrostatic attraction exceeds the thermal energy of the system, typically expressed as 2kT. Electrostatic attraction depends on ionic charge, separation distance, and the dielectric constant of the medium. Thermal energy, represented by kT, reflects the tendency of ions to move independently due to molecular motion.

Precipitation of Ions

Precipitation of Ions

Predicting Precipitation
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:

You might also read

Related Articles

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

Sort by

Same author

Electronic structure and optical properties of the Ag<sub>3</sub>SbS<sub>3</sub> crystal: experimental and DFT studies.

Physical chemistry chemical physics : PCCP·2023

Same author

Erratum: Reinvestigation of bis-(2,2'-bipyridine)(nitrato-κO,O')cobalt(III) hydroxide nitrate tetra-hydrate. Corrigendum.

Acta crystallographica. Section E, Structure reports online·2011

Same author

Disordered La3Cu4.88Se7.

Acta crystallographica. Section C, Crystal structure communications·2011

Same author

Dy(8)SnS(13.61)O(0.39) from single-crystal data.

Acta crystallographica. Section E, Structure reports online·2011

Same author

Monoclinic Cu2Se3Sn.

Acta crystallographica. Section C, Crystal structure communications·2010

Same author

Hydrogen-bonded network in biphenyl-4,4'-diphosphonic acid.

Acta crystallographica. Section C, Crystal structure communications·2007

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

Search research articles

Related Experiment Video

Updated: Jun 15, 2026

Exfoliation of Egyptian Blue and Han Blue, Two Alkali Earth Copper Silicate-based Pigments

Exfoliation of Egyptian Blue and Han Blue, Two Alkali Earth Copper Silicate-based Pigments

Published on: April 24, 2014

La2Pb(SiS4)2.

L D Gulay¹, M Daszkiewicz, I P Ruda

¹Department of Ecology and Protection of the Environment, Volyn National University, Voli Avenue 13, 43009 Lutsk, Ukraine.

Acta Crystallographica. Section C, Crystal Structure Communications

|March 6, 2010

Summary

This summary is machine-generated.

Dilanthanum(III) lead(II) bis[tetrasulfidosilicate(IV)], La(2)Pb(SiS(4))(2), was synthesized and structurally characterized. This new sulfide material exhibits unique coordination and a promising gap for crystal engineering applications.

More Related Videos

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)

Published on: December 29, 2016

A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration

A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration

Published on: March 29, 2019

Related Experiment Videos

Last Updated: Jun 15, 2026

Exfoliation of Egyptian Blue and Han Blue, Two Alkali Earth Copper Silicate-based Pigments

Exfoliation of Egyptian Blue and Han Blue, Two Alkali Earth Copper Silicate-based Pigments

Published on: April 24, 2014

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)

Published on: December 29, 2016

A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration

A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration

Published on: March 29, 2019

Area of Science:

Solid-state chemistry
Crystallography
Materials science

Background:

The La-Pb-Si-S system is explored for novel inorganic compounds.
Sulfide materials offer unique electronic and structural properties.

Purpose of the Study:

To synthesize and characterize the crystal structure of La(2)Pb(SiS(4))(2).
To investigate the potential of this material in crystal engineering.

Main Methods:

X-ray single-crystal diffraction was used for structural characterization.
Synthesis was performed from the La-Pb-Si-S system.

Main Results:

The crystal structure of La(2)Pb(SiS(4))(2) was determined.
La and Pb atoms exhibit bicapped trigonal prismatic coordination by sulfur.
Si atoms are tetrahedrally coordinated by sulfur.
An occupational disorder between La and Pb centers was identified.
Coordination polyhedra share edges, forming a unique network.
A significant gap (2.629 Å) was observed around the coordination polyhedra.

Conclusions:

La(2)Pb(SiS(4))(2) possesses a novel crystal structure with potential for crystal engineering.
The observed structural features, including the gap, suggest applications in advanced materials design.