Chandrasekhar, Vadapalli ; Anantharaman, Ganapathi ; Nehete, Umesh N. ; Roesky, Herbert W. ; Vidovic, Denis ; Magull, Jorg (2004) New polyhedral zinc siloxanes: synthesis and X-ray crystal structures of Zn8Me7(dioxane)2(O3SiR)3 and [Zn7Me2(THF)5(O3SiR)4] [R = (2,6-i-Pr2C6H3)N(SiMe3)] Organometallics, 23 (10). pp. 2251-2256. ISSN 0276-7333
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Official URL: http://pubs.acs.org/doi/abs/10.1021/om049863h
Related URL: http://dx.doi.org/10.1021/om049863h
Abstract
In continuation of our previous work on the synthesis of zinc siloxanes to understand the influence of stoichiometry in the assembly of polyhedral zinc siloxanes, we have carried out two different reactions between RSi(OH)3 [R = (2,6-i-Pr2C6H3)N(SiMe3)] and ZnMe2 in molar ratios of 1:3 and 1:1.75. In these reactions, we have isolated an octanuclear Zn8Me7(dioxane)2(O3SiR)3 (5) and a heptanuclear zinc siloxane [Zn7Me2(THF)5(O3SiR)4] (6), respectively. Compound 5 is a complex cage structure and can be understood as being a derivative of a drum-shaped species containing a Zn7Si3O9core. In contrast, 6 consists of a Zn4Si4O12 unit with zinc and silicon atoms occupying alternate corners of the cube; three contiguous faces of this cube are capped by zinc atoms, leaving the other three faces open.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 8943 |
| Deposited On: | 28 Oct 2010 10:30 |
| Last Modified: | 28 Oct 2010 10:30 |
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