1. New thioether–dithiolate complexes of Cp∗Ir and some reactivity features
- Author
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Xu, Chang, Li, Yongxin, Goh, Lai Yoong, and Pullarkat, Sumod A.
- Subjects
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SULFIDES , *COMPLEX compounds , *CHEMICAL reactions , *IODIDES , *BIMETALLIC catalysts , *REACTIVITY (Chemistry) - Abstract
Abstract: The reaction of [Cp∗IrCl2]2 (Cp*= η 5 −C5Me5) with the tridentate 3-thiapentane-1,5-dithiolate ligand, S(CH2CH2S−)2 (tpdt), led to the formation of [Cp∗Ir(η 3 −tpdt)] (1) in 81% isolated yield. Subsequent reactions of 1 with [Cp∗IrCl2]2 in 2:1 and 1:1 molar equiv ratios resulted in the formation of [Cp∗Ir(μ − η 2:η 3 −tpdt)Cp∗IrCl][PF6] (2) and [Cp∗Irμ − η 2:η 3 −tpdt)Cp∗IrCl][Cp∗IrCl3] (3) in 86 and 79% yields, respectively, based on 1, whereas the reactions of 1 with [(COD)IrCl]2 (COD=1,5-cyclooctadiene) in 2:1 and 1:1 molar equiv ratios resulted in the formation of the homo-bimetallic derivatives Cp∗Ir(μ − η 1:η 3 −tpdt)(COD)IrCl (4) (92% yield) and [Cp∗Ir(μ − η 2:η 3 −tpdt)(COD)Ir] [(COD)IrCl2] (5) (82% yield). Reactions between 1 and [(COD)RhCl]2, yielded the hetero-bimetallic derivatives Cp∗Ir(μ − η 1:η 3 −tpdt)(COD)RhCl (6) and [Cp∗Ir(μ − η 2:η 3 −tpdt)(COD)Rh][(COD)RhCl2] (7), in 92 and 93% yields, respectively. The reaction of 1 with methyl iodide gave mono-methylated derivative [Cp∗Ir(η3-C4H8S3Me)]I (8) (93% yield). All these compounds have been comprehensively characterized. [Copyright &y& Elsevier]
- Published
- 2012
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