Platinum-osmium heterometallic clusters containing N-heterocyclic carbene ligands and an electron-deficient tetraosmium by-product

Platinum-osmium heterometallic clusters containing N-heterocyclic carbene ligands and an electron-deficient tetraosmium by-product

The room temperature reaction of [Os 3 (CO) 12 ] (1) with three molar equivalents of [PtCl(allyl)(NHC)] (2) in the presence of KOtBu afforded the heterometallic clusters [PtOs 3 (CO) 12 (NHC)] (3), [Pt 2 Os 3 (CO) 12 (NHC) 2 ] (4), and [Pt 3 Os 3 (CO) 12 (NHC) 3 ] (5), together with a trace amount o...

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Bibliographic Details
Main Authors: Liu, Yu, Ganguly, Rakesh, Huynh, Han Vinh, Leong, Weng Kee
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2020
Subjects:
Science::Chemistry
Heterometallic Complexes
Carbene Ligands
Online Access:https://hdl.handle.net/10356/142976
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Institution: Nanyang Technological University
Language: English
Description
Summary:The room temperature reaction of [Os 3 (CO) 12 ] (1) with three molar equivalents of [PtCl(allyl)(NHC)] (2) in the presence of KOtBu afforded the heterometallic clusters [PtOs 3 (CO) 12 (NHC)] (3), [Pt 2 Os 3 (CO) 12 (NHC) 2 ] (4), and [Pt 3 Os 3 (CO) 12 (NHC) 3 ] (5), together with a trace amount of the tetraosmium cluster [Os 4 (CO) 10 (µ-H) 2 (NHC)] (6). The reaction pathway is thus similar to that for Pd analogues, with the exception of cluster 6. Unlike their Pd analogues, however, these clusters do not appear to readily interconvert. With a valence electron count of 58, clusters 6 are deficient by four electrons.

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