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

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide02:44

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

13.2K
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
13.2K
Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals01:17

Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

3.6K
Ideally, an unpaired electron shows a single peak in the EPR spectrum due to the transition between the two spin energy states. However, coupling interactions can occur between the spins of the unpaired electron and any neighboring spin-active nuclei. This hyperfine coupling results in hyperfine splitting, where the EPR signal is split into multiplets. The signals split into 2nI + 1 peaks, where n is the number of equivalent nuclei and I is the nuclear spin. These splitting patterns provide...
3.6K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

49.0K
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,...
49.0K
E2 Reaction: Stereochemistry and Regiochemistry02:43

E2 Reaction: Stereochemistry and Regiochemistry

14.0K
Elimination reactions of alkyl halides can yield one or more alkenes depending on the specific regiochemical and stereochemical considerations. While the regiochemistry of the reaction governs the location of the double bond in the product, the stereochemical requirements often influence the geometry.
When a substrate with two different β hydrogens undergoes an E2 elimination, the presence of a strong base can yield two regioisomeric alkenes. The more-substituted alkene is the major...
14.0K
Photochemical Electrocyclic Reactions: Stereochemistry01:26

Photochemical Electrocyclic Reactions: Stereochemistry

2.3K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
2.3K
Regioselectivity of Electrophilic Additions-Peroxide Effect02:35

Regioselectivity of Electrophilic Additions-Peroxide Effect

11.3K
In the presence of organic peroxides, the addition of hydrogen bromide to an alkene yields the isomer that is not predicted by Markovnikov’s rule. For example, the addition of hydrogen bromide to 2-methylpropene in the presence of peroxides gives 1-bromo-2-methylpropane. This addition reaction proceeds via a free radical mechanism, which reverses the regioselectivity. The free radical reaction mechanism involves three stages: initiation, propagation, and termination.
11.3K

You might also read

Related Articles

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

Sort by
Same author

Cracking down on vapochromic salts: unveiling vapomechanical stress in gas-sorbing platinum complexes.

Dalton transactions (Cambridge, England : 2003)·2024
Same author

Optical sensing of aqueous nitrate anion by a platinum(II) triimine salt based solid state material.

Chemical communications (Cambridge, England)·2022
Same author

Halide exchange studies of novel Pd(ii) NNN-pincer complexes.

RSC advances·2022
Same author

Tuning two-electron transfer in terpyridine-based platinum(ii) pincer complexes.

RSC advances·2022
Same author

Water's Role in Polymorphic Platinum(II) Complexes.

Inorganic chemistry·2021
Same author

Assessing flammable storage cabinets as sources of VOC exposure in laboratories using real-time direct reading wireless detectors.

Journal of chemical health & safety·2021
Same journal

Radical Cascades on Seawater Microdroplets Drive Atmospheric Mercury Oxidation.

Journal of the American Chemical Society·2026
Same journal

Superior Selective and Fast NH<sub>3</sub> Adsorption of Soft Porous MOF/Ionic Liquid Composites with Ordering Phase Transitions.

Journal of the American Chemical Society·2026
Same journal

Systematic Catalyst Variation for Improved Stereoselective Epoxide Polymerization: Subtle Modifications Resulting in Superior Efficiency.

Journal of the American Chemical Society·2026
Same journal

Deciphering the Halide Chemistry of Cl<sup>-</sup> and Br<sup>-</sup> in Enhancing Kinetics of Mg Plating/Stripping.

Journal of the American Chemical Society·2026
Same journal

Electrosynthesis of C<sub>6</sub> Chemicals by Propylene Oxidative Coupling on Au Surface.

Journal of the American Chemical Society·2026
Same journal

Statistical AI Enables Precise Screening of Multielement Catalysts.

Journal of the American Chemical Society·2026
See all related articles

Related Experiment Video

Updated: Feb 28, 2026

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
12:08

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Published on: June 24, 2022

4.1K

An outer-sphere two-electron platinum reagent.

Hershel Jude1, Jeanette A Krause Bauer, William B Connick

  • 1Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, USA.

Journal of the American Chemical Society
|March 20, 2003
PubMed
Summary
This summary is machine-generated.

This study introduces a new platinum complex with a unique ligand structure. This design enables facile two-electron redox cycling between platinum(II) and platinum(IV) states, advancing cooperative outer-sphere electron transfer reagent development.

More Related Videos

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
10:51

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes

Published on: April 10, 2015

12.8K
Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents
07:20

Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents

Published on: May 28, 2014

14.5K

Related Experiment Videos

Last Updated: Feb 28, 2026

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
12:08

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Published on: June 24, 2022

4.1K
The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
10:51

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes

Published on: April 10, 2015

12.8K
Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents
07:20

Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents

Published on: May 28, 2014

14.5K

Area of Science:

  • Inorganic Chemistry
  • Organometallic Chemistry
  • Electrochemistry

Background:

  • Designing efficient electron transfer reagents is crucial for catalysis and materials science.
  • Platinum complexes are widely studied for their redox properties.
  • Outer-sphere electron transfer mechanisms require specific ligand environments.

Purpose of the Study:

  • To demonstrate a strategy for designing cooperative outer-sphere two-electron platinum reagents.
  • To synthesize and characterize a novel platinum(II) complex with a unique pincer-type ligand.
  • To investigate the electrochemical behavior and redox capabilities of the synthesized complex.

Main Methods:

  • Synthesis of a novel platinum(II) complex, [Pt(tpy)(pip2NCN)][BF4].
  • Protonation of the complex to form [Pt(tpy)(pip2NCNH2)][PF6]3.
  • Structural characterization using 1H NMR spectroscopy and X-ray crystallography.
  • Electrochemical analysis via cyclic voltammetry.

Main Results:

  • The novel platinum(II) complex, [Pt(tpy)(pip2NCN)][BF4], was successfully prepared.
  • Protonation yielded a stable platinum(II) complex with a distinct ligand coordination mode.
  • Cyclic voltammetry revealed two reversible one-electron reduction waves and a nearly reversible two-electron oxidation wave.
  • The complex facilitates facile interconversion between Pt(II) and Pt(IV) oxidation states.

Conclusions:

  • The unusual ligand architecture of the platinum complex stabilizes multiple oxidation states.
  • This design strategy is effective for creating cooperative outer-sphere two-electron platinum reagents.
  • The findings open avenues for developing new electrocatalytic systems and redox-active materials.