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Platinum‐Osmium Heterometallic Clusters Containing N‐Heterocyclic Carbene Ligands and an Electron‐Deficient Tetraosmium By‐Product
Author(s) -
Liu Yu,
Ganguly Rakesh,
Huynh Han Vinh,
Leong Weng Kee
Publication year - 2019
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201900105
Subject(s) - osmium , chemistry , carbene , cluster (spacecraft) , platinum , valence electron , medicinal chemistry , molar ratio , valence (chemistry) , electron , stereochemistry , crystallography , catalysis , ruthenium , organic chemistry , physics , quantum mechanics , computer science , programming language
The room temperature reaction of [Os 3 (CO) 12 ] ( 1 ) with three molar equivalents of [PtCl(allyl)(NHC)] ( 2 ) in the presence of KO t Bu 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.