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

Complexation Equilibria: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

715
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
715
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

28.2K
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...
28.2K
Conformations of Cyclohexane02:11

Conformations of Cyclohexane

13.6K
Cyclohexane does not exist in a planar form due to the high angle and torsional strain it would experience in the planar structure. Instead, it adopts non-planar chair and boat conformations.
The chair form is the most stable and derives its name from its resemblance to the “easy chair.” In the chair conformation, two carbon atoms are arranged out-of-plane — one above and one below, minimizing the torsional strain. In the chair form, the bond angle is very close to the ideal...
13.6K
Chair Conformation of Cyclohexane02:02

Chair Conformation of Cyclohexane

16.0K
The chair conformation is the most stable form of cyclohexane due to the absence of angle and torsional strain. The absence of angle strain is a result of cyclohexane’s bond angle being very close to the ideal tetrahedral bond angle of 109.5° in its chair conformer. Similarly, the torsional strain is also absent owing to the perfectly staggered arrangement of bonds.
The hydrogen atoms linked to carbons are arranged in two different axial and equatorial orientations to achieve this...
16.0K
Cycloaddition Reactions: MO Requirements for Thermal Activation01:16

Cycloaddition Reactions: MO Requirements for Thermal Activation

3.8K
Thermal cycloadditions are reactions where the source of activation energy needed to initiate the reaction is provided in the form of heat. A typical example of a thermally-allowed cycloaddition is the Diels–Alder reaction, which is a [4 + 2] cycloaddition. In contrast, a [2 + 2] cycloaddition is thermally forbidden.
3.8K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

45.0K
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,...
45.0K

You might also read

Related Articles

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

Sort by
Same author

Rapid Assembly of a Covalently Locked Organic Cage Revealing Symmetry-Matched Guest Recognition.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same author

Cation-Directed Host-Guest Assembly and Reversible Wheel to Cluster Interconversion in a 20-Molybdate System.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same author

Photochemical Synthesis of 1,2-Diazepine-Fused β-Lactams via Staudinger-Type [2 + 2] Cyclization.

Organic letters·2026
Same author

Supramolecular Control of Photoinduced Electron Transfer between Tungsten Halide Clusters and Polyoxometalates in Water.

Inorganic chemistry·2026
Same author

High brightness in bis(tri-isopropylsilyl)ethynyl-functionalized polycyclic aromatic hydrocarbons: localized representation <i>versus</i> Clar's model.

Chemical science·2026
Same author

High-Performance Squaramine Macrocycles as Molecular Sieves for Selective Halogen Separation and Aromatic Bromination.

Angewandte Chemie (International ed. in English)·2025

Related Experiment Video

Updated: Oct 1, 2025

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
16:24

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Published on: August 2, 2012

18.8K

Chaotropic Effect as an Assembly Motif to Construct Supramolecular Cyclodextrin-Polyoxometalate-Based Frameworks.

Soumaya Khlifi1, Jérôme Marrot1, Mohamed Haouas1

  • 1Université Paris-Saclay, UVSQ, CNRS, UMR8180, Institut Lavoisier de Versailles, 78000 Versailles, France.

Journal of the American Chemical Society
|March 1, 2022
PubMed
Summary

We developed novel hybrid frameworks using polyoxometalates and cyclodextrins. These materials create large, tunable cavities for host-guest chemistry and functional applications.

More Related Videos

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
06:35

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

Published on: February 15, 2016

8.2K
Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
09:22

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Published on: February 7, 2017

7.9K

Related Experiment Videos

Last Updated: Oct 1, 2025

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
16:24

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Published on: August 2, 2012

18.8K
Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
06:35

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

Published on: February 15, 2016

8.2K
Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
09:22

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Published on: February 7, 2017

7.9K

Area of Science:

  • Supramolecular Chemistry
  • Materials Science
  • Nanotechnology

Background:

  • Low-charged polyoxometalates (POMs) show self-assembly with organic matter, advancing host-guest chemistry and soft matter science.
  • Cyclodextrins (CDs) are versatile macrocycles with inherent host-guest capabilities.

Purpose of the Study:

  • To enhance the structural and functional diversity of cyclodextrin-based open frameworks.
  • To exploit the affinity between polyoxometalates and cyclodextrins for novel framework design.

Main Methods:

  • Utilized the Anderson-Evans type polyoxometalate [AlMo6O18(OH)6]3- as an inorganic scaffold.
  • Employed single-crystal X-ray analysis to determine supramolecular architecture and topology.
  • Incorporated different cyclodextrins (α-, β-, and γ-CD) to study structural variations.

Main Results:

  • Successfully designed open hybrid frameworks with infinite cyclodextrin channels linked by POMs.
  • Observed formation of large cavities (up to 2 nm) with topologies dictated by cyclodextrin symmetry (honeycomb, checkerboard-like).
  • Demonstrated framework functionalization through entrapment of polyiodides and redox-active polyanions.

Conclusions:

  • The Anderson-Evans POM serves as an efficient scaffold for creating diverse cyclodextrin-based supramolecular frameworks.
  • Framework topology is controllable by the choice of cyclodextrin and POM building units.
  • These results enable the design of multifunctional supramolecular frameworks with tunable pore dimensions.