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- W2950887754 abstract "Stoichiometric reaction between Tl[9-SMe2-7,8-nido-C2B9H10] and [Ph3PCuBr]4 affords the title compound in good yield. Crystallographic analysis of this species shows that the copper atom is essentially symmetrically disposed above the five-atom ligand face, thus completing a closo 12 vertex polyhedron. In contrast, in the formally related species 10,11-μ-H-9-SMe2-7,8-nido-C2B9H10 and 10,11 -μ-(PPh3Au)-9-SMe2-7,8-nido-C2B9H10 the hydrogen atom and {Ph3PAu} fragment occupy bridging positions on an open face, whereas in anionic non-SMe2-substituted analogues of the last two the hydrogen atom and {Ph3PAu} fragment adopt endo-terminal sites. These differences in respect to the SMe2- substituted compounds are traced to the form of the HOMO of the [9-SMe2-7,8-nido- C2B9H10]t- ligand. Inspection of the three occupied π-MOs of this ligand additionally yields a semi-quantitative understanding of patterns visible in the facial BB, BC and CC distances of 3-PPh3-4-SMe2-3,1,2-closo-CuC2B9H10 10,11-μ-H-9-SMe2-7,8-nido-C2B9H10 and 10, 11-μ-(PPh3Au)-9-SMe2-7,8-nido-C2B9H10." @default.
- W2950887754 created "2019-06-27" @default.
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- W2950887754 date "1991-01-01" @default.
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- W2950887754 title "The synthesis and molecular structure of 3-PPh3- 4-SMe2-3,1,2-closo-CuC2B9H10: Relationship of its structure to those of 10,11-μ-H-9-SMe2-7,8-nido- C2B9H10 and 10,11-μ-(PPh3Au)-9-SMe2-7,8-nido-C2B9H10" @default.
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- W2950887754 doi "https://doi.org/10.1016/s0277-5387(00)80215-6" @default.
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