Penta and hexanuclear nickel tiara-like clusters with two different thiolate bridges
作者： Chunhong Tan , Meiliang Jin , Hao Zhang , Shengmin Hu , Tianlu Sheng
DOI: 10.1039/C5CE00863H
关键词:
摘要: Six nickel tiara-like clusters, cyclo-[Ni(μ-EDT)]5 (1), cyclo-{[Ni(μ-SiPe)2]6} (2), cyclo-[Ni6(μ-StBu)4(μ-EDT)4] (3), cyclo-[Ni6(μ-StBu)4(μ-PDT)4] (4), cyclo-[Ni6(μ-SPh)4(μ-EDT)4] (5) and cyclo-[Ni6(μ-SPh)4(μ-PDT)4] (6) (StBu = 2-methyl-2-propanethiol, EDT 1,2-ethanedithiol, PDT 1,3-propanedithiol, SiPe isopentylthiol, SPh thiophenol have been successfully synthesized characterized. All the clusters were derived from a designed preparation by direct synthetic route involving reactions of Ni(ClO4)2 with mixed thiolate or disulfide ligands which discrepancy in their coordination ability. Intriguingly, cluster 1 is an infrequent pentanuclear tiara. Clusters 3 4 are hexanuclear tiaras two different types mono bidentate aliphatic thiolates. 5 6 exhibit similar structures monoaromatic ligands. The –SPh generated situ reaction precursor through cleavage S–S bond. These heretofore unknown additions to cyclo-[Ni(μ-SR)2]n tiara family particular interest, often constructed just one kind ligand.
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