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

Valence Bond Theory02:42

Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
Colors and Magnetism03:02

Colors and Magnetism

Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
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,...
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

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...
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...
Coordination Number and Geometry02:57

Coordination Number and Geometry

For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.

You might also read

Related Articles

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

Sort by
Same author

Implementation of wearable activity trackers in hospital rehabilitation: a feasibility study tailored to local settings.

BMC health services research·2026
Same author

Attractive Noncovalent Interactions versus Steric Confinement in Asymmetric Supramolecular Catalysis.

Journal of the American Chemical Society·2025
Same author

Rhenium-Oxygen and Rhenium-Phosphorus Multiple Bonds in High Valent, π-Loaded Complexes.

Inorganic chemistry·2025
Same author

Bimetallic Complexes with Unusual Main Group Bridging Ligands.

Inorganic chemistry·2025
Same author

Reliability and profiling of physical performance tests in Australian Football League Women's (AFLW) athletes.

Journal of science and medicine in sport·2025
Same author

Tuning the Conformations of an M<sub>4</sub>L<sub>4</sub> Cage and Their Impact on Catalysis.

Journal of the American Chemical Society·2025

Related Experiment Video

Updated: Jul 8, 2026

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

Oxygen-centered hexatantalum tetradecaimido cluster complexes.

Jamin L Krinsky1, Laura L Anderson, John Arnold

  • 1Department of Chemistry, University of California, Berkeley, California 94720, USA.

Inorganic Chemistry
|January 1, 2008
PubMed
Summary

This study details the synthesis of novel tantalum-oxygen clusters featuring arylimido ligands. These air-sensitive but thermally stable compounds exhibit unique electronic structures and undergo clean imido/oxo exchange reactions with carbonyls and rhenium oxo compounds.

More Related Videos

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures
11:54

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures

Published on: February 8, 2018

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)
10:42

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

Published on: December 29, 2016

Related Experiment Videos

Last Updated: Jul 8, 2026

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

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures
11:54

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures

Published on: February 8, 2018

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)
10:42

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

Published on: December 29, 2016

Area of Science:

  • Inorganic Chemistry
  • Organometallic Chemistry
  • Materials Science

Background:

  • Hexatantalum clusters are of interest due to their unique electronic and structural properties.
  • Tantalum-nitrogen and tantalum-oxygen bonds play crucial roles in various catalytic and material applications.

Purpose of the Study:

  • To synthesize and characterize novel octahedral hexatantalum cluster compounds with arylimido ligands.
  • To investigate the electronic structure, stability, and reactivity of these tantalum clusters.
  • To explore the imido/oxo exchange capabilities of these clusters.

Main Methods:

  • Synthesis of arylimido hexatantalum clusters using aniline and tantalum precursors.
  • Characterization via X-ray diffraction (XRD) and electrospray mass spectrometry (MS).
  • Electrochemical studies to determine oxidation/reduction potentials and optical property measurements.

Main Results:

  • Successful synthesis of (ArN)14Ta6O clusters with various aryl substituents.
  • Structural confirmation of two species by XRD; oxygen identity confirmed by 17O/18O labeling in MS.
  • Clusters are air/moisture-sensitive but thermally stable in solution, with ligand-centered HOMO and metal-centered LUMO.
  • Reduction yields stable salts; imido groups undergo clean exchange with aldehydes, ketones, and a rhenium oxo compound.

Conclusions:

  • The synthesized hexatantalum clusters offer a new platform for studying tantalum cluster chemistry.
  • The observed imido/oxo exchange reactivity demonstrates potential for controlled ligand transfer and synthesis of new organometallic species.
  • These findings contribute to the understanding of metal-ligand interactions in tantalum cluster systems.