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

Rotation of Asymmetric Top01:11

Rotation of Asymmetric Top

1.5K
By definition, a spherically symmetric body has the same moment of inertia about any axis passing through its center of mass. This situation changes if there is no spherical symmetry. Since most rigid bodies are not spherically symmetric, these require special treatment.
The relationship between the angular momentum of any rigid body and its angular velocity, both of which are vectors, involves the moment of inertia. The moment of inertia is a scalar quantity only for spherically symmetric...
1.5K
Asymmetric Lipid Bilayer01:35

Asymmetric Lipid Bilayer

9.7K
Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
9.7K
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

3.8K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.8K
Protein Complex Assembly02:41

Protein Complex Assembly

16.7K
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
16.7K
Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

2.9K
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
2.9K
Formation of Complex Ions03:45

Formation of Complex Ions

25.8K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
25.8K

You might also read

Related Articles

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

Sort by
Same author

Measuring changes in environmental radiological background from construction of an advanced nuclear reactor testing facility.

Journal of environmental radioactivity·2026
Same author

Reactions of U(DMSO)<sub>8</sub>(ClO<sub>4</sub>)<sub>4</sub> with Terpyridine Yield Dimeric Hydrolysis Products and Induce C-C Coupling.

Inorganic chemistry·2026
Same author

Linearly acenaphthylene-fused pentacene exhibiting efficient singlet fission.

Chemical science·2026
Same author

Synthesis, structure & diphenylacetylene reduction reactivity of a carbide-supported Fe<sub>4</sub>Mo<sub>2</sub> carbonyl cluster: a higher Fe-valence hydride intermediate for enhanced selectivity.

Dalton transactions (Cambridge, England : 2003)·2026
Same author

Cooperative Lanthanide Solvation in an Ionic Liquid for Critical Materials Separations.

Inorganic chemistry·2026
Same author

Accessibility and Reactivity of Pentavalent Plutonium under Alkaline Conditions.

Journal of the American Chemical Society·2026

Related Experiment Video

Updated: Jan 25, 2026

Asymmetric Walkway: A Novel Behavioral Assay for Studying Asymmetric Locomotion
08:19

Asymmetric Walkway: A Novel Behavioral Assay for Studying Asymmetric Locomotion

Published on: January 15, 2016

9.3K

Asymmetric diosmium sawhorse complexes.

Kylie M Wilson1, John W Swartout1, Henry A Touchton1

  • 1Chemistry & Biochemistry, Abilene Christian University, ACU Box 28132, Abilene, Texas 79699, USA.

Acta Crystallographica. Section C, Structural Chemistry
|May 8, 2019
PubMed
Summary
This summary is machine-generated.

New asymmetric diosmium(I) carbonyl sawhorse complexes were synthesized, including the first example of an Os2 sawhorse complex with two different carboxylate bridges. Eight crystal structures were determined, providing insights into ligand substitution effects on the Os-Os bond distance.

Keywords:
asymmetric sawhorse complexaxial ligand substitutioncrystal structurediosmium carbonyl clustermixed carboxylate ligands

More Related Videos

Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation
09:09

Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation

Published on: February 5, 2020

7.6K
Studying Cell Rolling Trajectories on Asymmetric Receptor Patterns
04:24

Studying Cell Rolling Trajectories on Asymmetric Receptor Patterns

Published on: February 13, 2011

9.9K

Related Experiment Videos

Last Updated: Jan 25, 2026

Asymmetric Walkway: A Novel Behavioral Assay for Studying Asymmetric Locomotion
08:19

Asymmetric Walkway: A Novel Behavioral Assay for Studying Asymmetric Locomotion

Published on: January 15, 2016

9.3K
Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation
09:09

Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation

Published on: February 5, 2020

7.6K
Studying Cell Rolling Trajectories on Asymmetric Receptor Patterns
04:24

Studying Cell Rolling Trajectories on Asymmetric Receptor Patterns

Published on: February 13, 2011

9.9K

Area of Science:

  • Organometallic Chemistry
  • Inorganic Chemistry
  • Materials Science

Background:

  • Osmium carbonyl clusters are versatile precursors in organometallic synthesis.
  • Sawhorse complexes with bridging carboxylate ligands are of interest due to their unique structures and potential applications.
  • Understanding the influence of ligand substitution on metal-metal bonding is crucial for designing new materials.

Purpose of the Study:

  • To synthesize novel asymmetric diosmium(I) carbonyl sawhorse complexes.
  • To prepare the first Os2 sawhorse complex featuring two distinct bridging carboxylate ligands.
  • To investigate the impact of axial ligand substitution on the Os-Os bond distance in these complexes.

Main Methods:

  • Microwave-assisted synthesis of osmium complexes.
  • Reactions involving osmium carbonyl clusters (Os3(CO)12) and carboxylic acids.
  • Ligand exchange reactions to introduce phosphine ligands.
  • X-ray crystallographic analysis to determine molecular structures.

Main Results:

  • Successfully synthesized three asymmetric diosmium(I) carbonyl sawhorse complexes.
  • Prepared the first Os2 sawhorse complex with mixed bridging carboxylate ligands (acetate and propionate).
  • Determined eight crystal structures, including neutral Os2(μ-O2CR)2(CO)5L complexes, which were not previously structurally characterized.
  • Observed the influence of axial ligand substitution on the Os-Os bond distance.

Conclusions:

  • The study demonstrates a successful route to novel asymmetric osmium sawhorse complexes.
  • The findings provide valuable structural data for a class of osmium complexes.
  • The research contributes to the understanding of structure-property relationships in organometallic compounds.