Issue 26, 2025

Heterobimetallic unsaturated silicon clusters (siliconoids) with transition metal-expanded scaffolds

Abstract

We report a heterobimetallical unsaturated silicon cluster (siliconoid) with a formally anionic group 9 metal vertex (Ir) in close contact to the lithium counter-cation, thus constituting a rare example of transition metal–lithium interactions. The anionic cluster is obtained by reductive chloride elimination from the corresponding neutral siliconoid complex of iridium(I) chloride with lithium/naphthalene. The previously exohedral transition metal center is fully incorporated into the siliconoid cluster scaffold giving rise to an irida-heterosiliconoid reminiscent of the corresponding homonuclear Si7 species. Despite the formal negative charge at the iridium center, the nucleophilic site is on one of the adjacent silicon vertices judging from the reactivity toward group 4 metallocene dichlorides, Cp2MCl2 (M = Zr, Hf). Under elimination of LiCl, the Cp2MCl moieties in the heterobimetallic products are installed as pending functionalities under retention of the literally uncompromised iridasiliconoid core.

Graphical abstract: Heterobimetallic unsaturated silicon clusters (siliconoids) with transition metal-expanded scaffolds

Supplementary files

Transparent peer review

To support increased transparency, we offer authors the option to publish the peer review history alongside their article.

View this article’s peer review history

Article information

Article type
Paper
Submitted
14 May 2025
Accepted
12 Jun 2025
First published
13 Jun 2025
This article is Open Access
Creative Commons BY license

Dalton Trans., 2025,54, 10441-10447

Heterobimetallic unsaturated silicon clusters (siliconoids) with transition metal-expanded scaffolds

L. Giarrana, N. E. Poitiers, A. Stürmer, M. Zimmer, V. Huch, B. Morgenstern and D. Scheschkewitz, Dalton Trans., 2025, 54, 10441 DOI: 10.1039/D5DT01135C

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements