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- W2316894927 abstract "Both isomers, 1 and 2, of Cp∗Ir(2,5-Me2T), where 2,5-dimethylthiophene is either η4- or C,S-coordinated to the iridium, react to give the same products. With S8, they give (Cp∗Ir)2S8 (3) whose X-ray-determined structure shows the two Cp∗Ir units to be linked by two S4 ligands. 3·CH2Cl2 crystallizes in the monoclinic space group P21/c, with a = 14.224(5), b = 12.795(2), c = 17.094(7) Å, β = 103.77(2)°, V = 3022(2) Å3 and Z = 4. The reactions of 1 and 2 with O2 give an acylthiolate product Cp∗Ir(η4-SC3H2MeC(O)Me) (4) in which a CS bond of the 2,5-Me2T ligand is cleaved and an oxygen atom is incorporated at an α-carbon. Both 1 and 2 form the same adduct Cp∗Ir(C,S-2,5-Me2T)(SO2) (5) with SO2; spectroscopic data suggest that the SO2 is coordinated to Ir. With CS2, 1 and 2 give a product Cp∗Ir(η4-2,5-Me2T)(CS2) (6) in which CS2 acts as a Lewis acid by coordinating to the sulfur of the η4-2,5-Me2T ligand. These reactions illustrate the versatile reactivity of Cp∗Ir(2,5-Me2T), which acts as a reducing agent with S8 and O2, as a Lewis acid with SO2 and as a base with CS2." @default.
- W2316894927 created "2016-06-24" @default.
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- W2316894927 date "1995-07-01" @default.
- W2316894927 modified "2023-10-14" @default.
- W2316894927 title "Reactions of (η5-C5Me5)Ir(2,5-dimethylthiophene) with S8, O2, SO2 and CS2" @default.
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- W2316894927 doi "https://doi.org/10.1016/0020-1693(95)90046-9" @default.
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