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Updated: Feb 15, 2026

Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids

Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids

Published on: August 23, 2018

Isomorphous substitution in bimetallic oxide clusters.

E Janssens¹, G Santambrogio, M Brümmer

¹Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany. janssens@physik.fu-berlin.de

Physical Review Letters

|June 29, 2006

Summary

Titanium-vanadium oxide cluster anions adopt caged structures. Replacing vanadium with titanium atoms in these clusters does not alter their structure but increases unpaired electrons, affecting their ground state.

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Spatial Separation of Molecular Conformers and Clusters

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

Area of Science:

Inorganic Chemistry
Materials Science
Physical Chemistry

Background:

Bimetallic oxide clusters are crucial in catalysis and materials science.
Understanding their geometric and electronic structures is key to designing new materials.
Gas phase vibrational spectroscopy offers a powerful tool for probing these properties.

Purpose of the Study:

To investigate the geometric and electronic structure of titanium-vanadium oxide cluster anions.
To determine how composition affects cluster structure and properties.
To explore the impact of substituting vanadium with titanium.

Main Methods:

Gas phase vibrational spectroscopy, specifically infrared multiple photon dissociation (IRMPD).
Measurement of IRMPD spectra in the 500-1200 cm⁻¹ range.
Density functional theory (DFT) calculations for harmonic frequencies and structural assignments.

Main Results:

Titanium-vanadium oxide cluster anions form polyhedral caged structures.
Singly substituted clusters resemble isoelectronic neutral clusters.
Isomorphous substitution of V by Ti does not change cluster structure.
Ti-rich systems exhibit increased unpaired electrons, leading to a quartet ground state for Ti(4)O(-)(10).

Conclusions:

The structure of titanium-vanadium oxide clusters is robust to isomorphous substitution.
Electronic properties, specifically the number of unpaired electrons and ground state spin, are sensitive to composition.
These findings provide insights into the fundamental properties of bimetallic oxide clusters.