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Related Experiment Video

Updated: Feb 27, 2026

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

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Published on: May 27, 2020

[OsF₆ ]^x- : Molecular Models for Spin-Orbit Entangled Phenomena.

Kasper S Pedersen^1,2,3,4,5, Daniel N Woodruff⁶, Saurabh Kumar Singh⁷

¹CNRS, CRPP, UPR 8641, 33600, Pessac, France.

Chemistry (Weinheim an Der Bergstrasse, Germany)

|June 28, 2017

Summary

Researchers studied molecular osmium compounds to understand osmium ions in oxides. This research provides insights into spin-orbit interactions for developing new materials with exotic behaviors.

Keywords:

5d elements X-ray spectroscopy ab initio calculations magnetism osmium spin-orbit interaction

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Last Updated: Feb 27, 2026

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

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Published on: May 27, 2020

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Area of Science:

Solid State Chemistry
Materials Science
Quantum Materials

Background:

Heavy 5d elements like osmium exhibit strong spin-orbit interactions, crucial for exotic physical phenomena.
Understanding local single-ion properties is key to unlocking the potential of novel osmium-based materials, such as osmates.

Purpose of the Study:

To synthesize and characterize molecular osmate analogues, [OsF6]2- and [OsF6]-, as model systems for Os4+ and Os5+ ions in oxides.
To elucidate the ground state electronic structure of these osmium centers.

Main Methods:

X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism (XMCD) were employed.
State-of-the-art ab initio calculations were used in conjunction with experimental techniques.

Main Results:

The ground state electronic structure of the molecular osmate analogues was successfully elucidated.
The electronic structure mirrors that of osmium centers found in oxide materials.

Conclusions:

Molecular model systems like [OsF6]2- and [OsF6]- are valuable tools for studying osmium.
These systems offer a platform for engineering materials with advanced spin-orbit entangled phenomena.