# POP-pincer silyl complexes of group 9: rhodium versus iridium.
> 第9族POP-ピンサーシリル錯体：ロジウムとイリジウムの比較研究


## Abstract

This study examines the synthesis and reactivity of rhodium and iridium silyl complexes bearing a xanthene-based POP-type pincer ligand. Reactions with diphenylsilane and triethylsilane yielded saturated d6 complexes for both metals, with a chloride/hydride positional exchange process identified for certain derivatives. The rhodium system produced a square-planar d8 silyl compound, while the analogous iridium complex formed a stable dihydride species. A cationic five-coordinate rhodium complex, generated through a silylene intermediate, functioned as an effective catalyst precursor for the monoalcoholysis of diphenylsilane across a broad range of alcohols, achieving turnover frequencies between 4,000 and 76,500 h⁻¹ at 50% conversion. X-ray crystallographic structures of six key complexes are also reported.

## Bibliographic

- **Authors**: Esteruelas MA, Oliván M, Vélez A
- **Journal**: Inorg Chem
- **Year**: 2013 (2013-10-21)
- **PMID**: [24088172](https://pubmed.ncbi.nlm.nih.gov/24088172/)
- **DOI**: [10.1021/ic401931y](https://doi.org/10.1021/ic401931y)
- **Study type**: other
- **Delivery route**: not specified
- **Effect reported**: not assessed

## Delivery context

The delivery route is not clearly identifiable from this paper. For hydrogen intake, inhalation is the most efficient route; inhalation, however, carries explosion risk (empirical LFL of 10%; high-concentration devices are not recommended).

## Safety notes

The delivery route is not clearly identifiable from this paper. For hydrogen intake, inhalation is the most efficient route; inhalation, however, carries explosion risk (empirical LFL of 10%; high-concentration devices are not recommended).

See also:
- [Inhalation concentration and LFL / UFL](https://h2-papers.org/en/safety-notes/inhalation-concentration)
- [Consumer Affairs Agency accident cases](https://h2-papers.org/en/safety-notes/accident-cases)

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> **Cite as**: H2 Papers — PMID 24088172. https://h2-papers.org/en/papers/24088172
> **Source**: PubMed PMID [24088172](https://pubmed.ncbi.nlm.nih.gov/24088172/)