Decomposition of organometallic precursor tricarbonyl(trimethylenemethane)ruthenium Ru(C <sub>4</sub> H <sub>6</sub> )(CO) <sub>3</sub> <sup>+/0</sup> in the gas phase investigated by thermal desorption spectrometry

Thermal decomposition of an organometallic precursor Ru(C<sub>4</sub>H<sub>6</sub>)(CO)<sub>3</sub><sup>+/0</sup> was observed using gas-phase thermal desorption spectrometry. It was found that the CO ligands were readily released, forming Ru(C<sub>4</sub>H<sub>6</sub>)<sup>+</sup> at 600 K. Then, Ru(C<sub>4</sub>H<sub>4</sub>)<sup>+</sup> and Ru(C<sub>2</sub>H<sub>2</sub>)<sup>+</sup> were produced as a result of sequential H<sub>2</sub> and C<sub>2</sub>H<sub>2</sub> release above 800 K. The activation energies of the ligand losses were estimated from the temperature dependences, and were consistent with the available internal energies obtained by DFT calculations. Based on experimental and computational results, Ru(C<sub>4</sub>H<sub>4</sub>)<sup>+</sup> was identified as a ruthenium complex with unsubstituted cyclobutadiene, [η<sup>4</sup>-(C<sub>4</sub>H<sub>4</sub>)Ru]<sup>+</sup>. For the thermal decomposition of neutral Ru(C<sub>4</sub>H<sub>6</sub>)(CO)<sub>3</sub>, the appearance of photoionized Ru(C<sub>4</sub>H<sub>6</sub>)(CO) is evidence of CO loss from Ru(C<sub>4</sub>H<sub>6</sub>)(CO)<sub>2</sub> at 740 K. The decomposition further proceeds above 800 K, forming Ru(C<sub>4</sub>H<sub>6</sub>).

Authors

Institutions

Publication Details

Journal
Physical Chemistry Chemical Physics
Published
2025-01-01
DOI
https://doi.org/10.1039/d5cp00200a
Citations
1
Primary Topic
Chemical Thermodynamics and Molecular Structure
Type
article
Field-Weighted Citation Impact
0.94

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

Decomposition of organometallic precursor tricarbonyl(trimethylenemethane)ruthenium Ru(C 4 H 6 )(CO) 3 +/0 in the gas phase investigated by thermal desorption spectrometry

Ryosuke Harada, Ken Miyajima, Fumitaka Mafuné, Toshiaki Nagata et al.
1 citations
Physical Chemistry Chemical Physics
Chemical Thermodynamics and Molecular Structure
0.94
article

Decomposition of organometallic precursor tricarbonyl(trimethylenemethane)ruthenium Ru(C 4 H 6 )(CO) 3 +/0 in the gas phase investigated by thermal desorption spectrometry

Ryosuke Harada, Ken Miyajima, Fumitaka Mafuné, Toshiaki Nagata, Tomohiro Tsugawa
article en
1 citations

Abstract

Thermal decomposition of an organometallic precursor Ru(C<sub>4</sub>H<sub>6</sub>)(CO)<sub>3</sub><sup>+/0</sup> was observed using gas-phase thermal desorption spectrometry. It was found that the CO ligands were readily released, forming Ru(C<sub>4</sub>H<sub>6</sub>)<sup>+</sup> at 600 K. Then, Ru(C<sub>4</sub>H<sub>4</sub>)<sup>+</sup> and Ru(C<sub>2</sub>H<sub>2</sub>)<sup>+</sup> were produced as a result of sequential H<sub>2</sub> and C<sub>2</sub>H<sub>2</sub> release above 800 K. The activation energies of the ligand losses were estimated from the temperature dependences, and were consistent with the available internal energies obtained by DFT calculations. Based on experimental and computational results, Ru(C<sub>4</sub>H<sub>4</sub>)<sup>+</sup> was identified as a ruthenium complex with unsubstituted cyclobutadiene, [η<sup>4</sup>-(C<sub>4</sub>H<sub>4</sub>)Ru]<sup>+</sup>. For the thermal decomposition of neutral Ru(C<sub>4</sub>H<sub>6</sub>)(CO)<sub>3</sub>, the appearance of photoionized Ru(C<sub>4</sub>H<sub>6</sub>)(CO) is evidence of CO loss from Ru(C<sub>4</sub>H<sub>6</sub>)(CO)<sub>2</sub> at 740 K. The decomposition further proceeds above 800 K, forming Ru(C<sub>4</sub>H<sub>6</sub>).

Physical Chemistry Chemical PhysicsVol. 27(17)
Eisai (Japan) (JP), The University of Tokyo (JP)
Japan Society for the Promotion of Science
Openalex Percentile: Top 27%
Chemical Thermodynamics and Molecular Structure
0.94
DOIOpen Access PDFOpenAlex
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.