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

Cluster Sampling Method01:20

Cluster Sampling Method

14.8K
Appropriate sampling methods ensure that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest.
To choose a cluster sample, divide the population into clusters (groups) and then randomly select some of the clusters. All the members from these clusters are in the cluster sample. For example, if you randomly sample four departments from your...
14.8K
Vesicular Tubular Clusters01:45

Vesicular Tubular Clusters

3.2K
After budding out from the ER membrane, some COPII vesicles lose their coat and fuse with one another to form larger vesicles and interconnected tubules called vesicular tubular clusters or VTCs. These clusters constitute a compartment at the ER-Golgi interface known as ERGIC (Endoplasmic Reticulum Golgi Intermediate Compartment). The ERGIC is a mobile membrane-bound cargo transport system that sorts proteins secreted from ER and delivers them to the Golgi.
With the help of motor proteins such...
3.2K
Aromatic Hydrocarbon Anions: Structural Overview01:18

Aromatic Hydrocarbon Anions: Structural Overview

3.8K
Neutral hydrocarbons like cyclopentadiene with an odd number of carbon atoms and one intervening CH2 group in the ring are not aromatic. Cyclopentadiene with 4 π electrons does not satisfy the 4n + 2 π electron rule. Additionally, the intervening CH2 group is sp3 hybridized and lacks a vacant p orbital, thereby interrupting the overlap of p orbitals in a continuous manner and preventing the delocalization of π electrons throughout the ring.
Due to the absence of continuous...
3.8K
Anionic Chain-Growth Polymerization: Overview01:20

Anionic Chain-Growth Polymerization: Overview

2.6K
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
2.6K
Anionic Chain-Growth Polymerization: Mechanism01:04

Anionic Chain-Growth Polymerization: Mechanism

2.5K
The mechanism for anionic chain-growth polymerization involves initiation, propagation, and termination steps. In the initiation step, a nucleophilic anion, such as butyl lithium, initiates the polymerization process by attacking the π bond of the vinylic monomer. As a result, a carbanion, stabilized by the electron‐withdrawing group, is generated. The resulting carbanion acts as a Michael donor in the propagation step and attacks the second vinylic monomer, which acts as a Michael...
2.5K
π Molecular Orbitals of the Allyl Cation and Anion01:18

π Molecular Orbitals of the Allyl Cation and Anion

5.6K
An allyl group is a three-carbon conjugated system where the sp³-hybridized allylic carbon is bonded to a CH=CH2 group via a single bond. Allyl anions can be obtained by treating propene with a strong base that can deprotonate methyl groups. Allyl cations are formed as intermediates during substitution reactions involving allylic halides. In both cases, the hybridization of the allylic carbon changes from sp3 to sp2, giving rise to a carbon chain with three sp2-hybridized carbons, each with...
5.6K

You might also read

Related Articles

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

Sort by
Same author

Antiferromagnetic Arsenides U<sub>8</sub>Co<sub>42</sub>As<sub>25</sub> and UCo<sub>3</sub>As<sub>2</sub>.

Inorganic chemistry·2026
Same author

Revisiting the C60ISO and iso-C60 Data Sets of Relative Energies for C<sub>60</sub> Isomers.

The journal of physical chemistry letters·2026
Same author

Germylium Catalyzed Dehydrofluorination Reactions of Fluorinated Alkanes.

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

An Energy-Corrected Fast Post-SCF Local-Hybrid Scheme for Highly Accurate Energy Differences of Large Main-Group Systems.

Journal of computational chemistry·2026
Same author

Routes to Cyclobutadiene and Cycloallyl Pt(II) Complexes: Dicationic Bis(Alkyne) Species as Intermediates.

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

Systematic Evaluation of a Cluster-Continuum-Model Workflow to Compute the Free Energies of Solvation of Ions in Different Solvents.

The journal of physical chemistry. A·2026

Related Experiment Video

Updated: Feb 11, 2026

Detection of Viruses from Bioaerosols Using Anion Exchange Resin
06:10

Detection of Viruses from Bioaerosols Using Anion Exchange Resin

Published on: August 22, 2018

8.7K

The Cluster Anion Si94.

Hans Georg von Schnering1, Mehmet Somer2, Martin Kaupp1

  • 1Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart (Germany), Fax: (+49) 711-689-1502.

Angewandte Chemie (International Ed. in English)
|May 2, 2018
PubMed
Summary

Researchers identified a new silicon cluster anion, Si9(4-), using Raman spectra and quantum chemical calculations. This discovery sheds light on silicon cluster chemistry and solid-phase formation.

Keywords:
Ab initio calculationsClustersRaman spectroscopySiliconThermogravimetry

More Related Videos

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F&#8722;
06:53

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Published on: July 27, 2018

9.2K
Author Spotlight: Innovative Techniques for ROS Detection and Implications for Platelet Research
06:35

Author Spotlight: Innovative Techniques for ROS Detection and Implications for Platelet Research

Published on: March 29, 2024

1.2K

Related Experiment Videos

Last Updated: Feb 11, 2026

Detection of Viruses from Bioaerosols Using Anion Exchange Resin
06:10

Detection of Viruses from Bioaerosols Using Anion Exchange Resin

Published on: August 22, 2018

8.7K
Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F&#8722;
06:53

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Published on: July 27, 2018

9.2K
Author Spotlight: Innovative Techniques for ROS Detection and Implications for Platelet Research
06:35

Author Spotlight: Innovative Techniques for ROS Detection and Implications for Platelet Research

Published on: March 29, 2024

1.2K

Area of Science:

  • Solid-state chemistry
  • Computational chemistry
  • Materials science

Background:

  • Silicon cluster anions are crucial in understanding the properties of silicon-based materials.
  • Previous research has not fully characterized the Si9(4-) cluster.

Purpose of the Study:

  • To characterize the previously unknown cluster anion Si9(4-).
  • To determine the structure of Si9(4-).

Main Methods:

  • Raman spectroscopy was employed to analyze the vibrational properties of the cluster.
  • Quantum chemical calculations were utilized to model and confirm the structure and bonding.

Main Results:

  • The novel cluster anion Si9(4-) was successfully characterized.
  • The specific structure of Si9(4-) was determined through combined experimental and computational data.
  • The formation of Si9(4-) was observed during the thermal decomposition of alkali metal monosilicides.

Conclusions:

  • The study successfully identified and structurally characterized the Si9(4-) cluster anion.
  • This finding expands the knowledge of silicon cluster chemistry.
  • The formation mechanism provides insights into solid-phase synthesis involving silicon clusters.