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Related Concept Videos

Ionic Crystal Structures02:42

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...
Electron Configuration of Multielectron Atoms03:26

Electron Configuration of Multielectron Atoms

The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
Ionic Bonding and Electron Transfer02:48

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.
Predicting Molecular Geometry02:27

Predicting Molecular Geometry

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Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
VSEPR Theory and the Basic Shapes02:52

VSEPR Theory and the Basic Shapes

Overview of VSEPR Theory

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Related Experiment Video

Updated: Jun 18, 2026

Discovery and Synthesis Optimization of Isoreticular Al(III) Phosphonate-Based Metal-Organic Framework Compounds Using High-Throughput Methods
07:20

Discovery and Synthesis Optimization of Isoreticular Al(III) Phosphonate-Based Metal-Organic Framework Compounds Using High-Throughput Methods

Published on: October 6, 2023

Cerium(IV) fluoride and fluoride-arsenate frameworks.

Jessica Rouse1, Mark T Weller

  • 1School of Chemistry, University of Southampton, Highfield Campus, Southampton, Hampshire SO17 1BJ, UK. jr25@soton.ac.uk

Dalton Transactions (Cambridge, England : 2003)
|November 19, 2009
PubMed
Summary
This summary is machine-generated.

Five novel cerium (IV) fluoride and fluoride-arsenate frameworks were synthesized. These new materials exhibit diverse structures, including layered and open frameworks with unique channel systems, expanding the known chemistry of cerium compounds.

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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

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Last Updated: Jun 18, 2026

Discovery and Synthesis Optimization of Isoreticular Al(III) Phosphonate-Based Metal-Organic Framework Compounds Using High-Throughput Methods
07:20

Discovery and Synthesis Optimization of Isoreticular Al(III) Phosphonate-Based Metal-Organic Framework Compounds Using High-Throughput Methods

Published on: October 6, 2023

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

Area of Science:

  • Inorganic Chemistry
  • Materials Science
  • Solid-State Chemistry

Background:

  • Cerium (IV) compounds are of interest due to their diverse oxidation states and coordination chemistry.
  • Fluoride and arsenate frameworks offer unique structural and electronic properties.
  • Hydrothermal synthesis is a versatile method for creating complex inorganic structures.

Purpose of the Study:

  • To synthesize and characterize new cerium (IV) fluoride and fluoride-arsenate framework structures.
  • To explore the structural diversity achievable with cerium (IV) in combination with fluoride and arsenate anions.
  • To investigate the role of hydrothermal conditions in the formation of these novel materials.

Main Methods:

  • Hydrothermal synthesis utilizing CeF(4) as a fluoride source.
  • Single-crystal X-ray diffraction for structural determination.
  • Chemical analysis to confirm composition.

Main Results:

  • Five new cerium (IV) fluoride and fluoride-arsenate framework structures were successfully synthesized.
  • Cs[Ce(2)F(8)[F.H(2)O]] exhibits a layered structure with channels for cesium ions.
  • [(NH(4))(5)(H(2)O)(2)][Ce(4)(AsO(4))(6)(H(2)O)F(3)] features an open framework with large channels.
  • Ce[AsO(4)]F and Ce[AsO(4)]F[H(2)O] display bridging Ce-O-Ce and Ce-F-Ce bonds.
  • (NH(4))[CeF(2)(AsO(4))] is isostructural with a known fluoride-phosphate analog.

Conclusions:

  • The hydrothermal synthesis approach is effective for generating novel cerium (IV) fluoride and fluoride-arsenate frameworks.
  • The synthesized compounds display a range of structural motifs, highlighting the versatility of cerium coordination.
  • These findings contribute to the understanding of inorganic framework materials and cerium chemistry.