A route to small clusters: a twisted half-hexagram-shaped M4(OH)4 cluster and its capacity for hosting closed-shell metals

By combining different oxidation states, coordination indices and bridging systems, it has been possible to obtain the structurally novel M4(OH)4 cluster core (M = transition metal) found in the organometallic compound (NBu4)2[PtIVPt3II(C6Cl5)8(μ2-OH)2(μ3-OH)2] (1). The cluster is formed by two (μ3-...

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Published inChemical communications (Cambridge, England) Vol. 53; no. 98; pp. 13121 - 13124
Main Authors Ara, I, García-Monforte, M A, González, R, Falvello, L R, Tomás, M
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 2017
Subjects
Chemical bonds
Clusters
Oxidation
Platinum
Silver
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Summary:By combining different oxidation states, coordination indices and bridging systems, it has been possible to obtain the structurally novel M4(OH)4 cluster core (M = transition metal) found in the organometallic compound (NBu4)2[PtIVPt3II(C6Cl5)8(μ2-OH)2(μ3-OH)2] (1). The cluster is formed by two (μ3-OH) and two (μ2-OH) units that bond platinum atoms in different oxidation states. The cluster core geometry can best be described as a half-hexagram. Compound 1 is an excellent precursor for preparing heterometallic clusters since it can host d10 or s2 Lewis-acid metal centers through Pt→M dative bonds, as demonstrated by its reaction with Ag(i) to produce the heterometallic [Ag2PtIVPt3II(C6Cl5)8(μ2-OH)2(μ3-OH)2] (2), which has four unbridged Pt–Ag bonds.
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ISSN:1359-7345
1364-548X
DOI:10.1039/c7cc07712b