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Updated: Mar 18, 2026
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The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
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Diminished electron density in the Vaska-type rhodium(I) complex trans-[Rh(NCBH3)(CO)(PPh3)2]
M R Galding1, A V Virovets2, I V Kazakov1
1SPbSU, Universitetskaya nab. 7/9, St Petersburg 199034, Russian Federation.
Summary
Researchers synthesized a novel rhodium(I) cyanotrihydridoborate complex. This complex exhibits reduced electron density on the rhodium atom, impacting its reactivity and catalytic potential.
Area of Science:
- Organometallic Chemistry
- Coordination Chemistry
- Catalysis
Background:
- Vaska-type rhodium(I) complexes are known for their reactivity and catalytic applications.
- The electron density on the rhodium(I) atom significantly influences their chemical behavior.
- Cyanotrihydridoborate complexes of transition metals are well-studied, but rhodium(I) complexes were an exception.
Purpose of the Study:
- To synthesize and characterize a novel rhodium(I) cyanotrihydridoborate complex.
- To investigate the coordination mode of the cyanotrihydridoborate ligand.
- To assess the electronic properties of the rhodium center in the new complex.
Main Methods:
- Synthesis via metathesis reaction between sodium cyanotrihydridoborate and trans-[RhCl(CO)(PPh3)2].
- Characterization using single-crystal X-ray diffraction analysis.
- Spectroscopic analysis including IR, 1H NMR, 13C NMR, and 11B NMR.
Main Results:
- The cyanotrihydridoborate ligand was successfully coordinated to the rhodium(I) atom through the nitrogen atom.
- X-ray diffraction confirmed the N-coordination, placing the cyanotrihydridoborate ligand trans to the carbonyl ligand.
- IR and NMR data corroborated the N-coordination and indicated diminished electron density on the rhodium(I) center.
Conclusions:
- A new rhodium(I) cyanotrihydridoborate complex, [Rh(NCBH3)(CO)(PPh3)2], was synthesized and structurally elucidated.
- The cyanotrihydridoborate ligand coordinates via nitrogen, influencing the electronic properties of the rhodium center.
- The findings provide insights into the reactivity of Vaska-type complexes with modified ligands.
Keywords:
IR analysisNMR analysisVaska-type complexcrystal structurecyanotrihydridoborate liganddiminished electron densityrhodium(I) complexMore Related Videos
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