The experimental gas-phase structures of 1,3,5-trisilylbenzene and hexasilylbenzene and the theoretical structures of all benzenes with three or more silyl substituents

Johnston BF, Mitzel NW, Rankin DWH, Robertson HE, Rudinger C, Schmidbaur H (2005)
DALTON TRANSACTIONS (13): 2292-2299.

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The structures of 1,3,5-trisilylbenzene and hexasilylbenzene in the gas phase have been determined by electron diffraction, and that of 1,3,5-trisilylbenzene by X-ray crystallography. The structures of three trisilylbenzene isomers, three tetrasilylbenzenes, pentasilylbenzene and hexasilylbenzene have been computed, ab initio and using Density Functional Theory, at levels up to MP2/6-31G*. The primary effect of silyl substituents is to narrow the ring angle at the substituted carbon atoms. Steric interactions between silyl groups on neighbouring carbon atoms lead first to displacement of these groups away from one another, and then to displacement out of the ring plane, with alternate groups moving to opposite sides of the ring. In the extreme example, hexasilylbenzene, the SiCCSi dihedral angle is 17.8(8)degrees.
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Johnston BF, Mitzel NW, Rankin DWH, Robertson HE, Rudinger C, Schmidbaur H. The experimental gas-phase structures of 1,3,5-trisilylbenzene and hexasilylbenzene and the theoretical structures of all benzenes with three or more silyl substituents. DALTON TRANSACTIONS. 2005;(13):2292-2299.
Johnston, B. F., Mitzel, N. W., Rankin, D. W. H., Robertson, H. E., Rudinger, C., & Schmidbaur, H. (2005). The experimental gas-phase structures of 1,3,5-trisilylbenzene and hexasilylbenzene and the theoretical structures of all benzenes with three or more silyl substituents. DALTON TRANSACTIONS(13), 2292-2299.
Johnston, B. F., Mitzel, N. W., Rankin, D. W. H., Robertson, H. E., Rudinger, C., and Schmidbaur, H. (2005). The experimental gas-phase structures of 1,3,5-trisilylbenzene and hexasilylbenzene and the theoretical structures of all benzenes with three or more silyl substituents. DALTON TRANSACTIONS, 2292-2299.
Johnston, B.F., et al., 2005. The experimental gas-phase structures of 1,3,5-trisilylbenzene and hexasilylbenzene and the theoretical structures of all benzenes with three or more silyl substituents. DALTON TRANSACTIONS, (13), p 2292-2299.
B.F. Johnston, et al., “The experimental gas-phase structures of 1,3,5-trisilylbenzene and hexasilylbenzene and the theoretical structures of all benzenes with three or more silyl substituents”, DALTON TRANSACTIONS, 2005, pp. 2292-2299.
Johnston, B.F., Mitzel, N.W., Rankin, D.W.H., Robertson, H.E., Rudinger, C., Schmidbaur, H.: The experimental gas-phase structures of 1,3,5-trisilylbenzene and hexasilylbenzene and the theoretical structures of all benzenes with three or more silyl substituents. DALTON TRANSACTIONS. 2292-2299 (2005).
Johnston, BF, Mitzel, Norbert W., Rankin, DWH, Robertson, HE, Rudinger, C, and Schmidbaur, H. “The experimental gas-phase structures of 1,3,5-trisilylbenzene and hexasilylbenzene and the theoretical structures of all benzenes with three or more silyl substituents”. DALTON TRANSACTIONS 13 (2005): 2292-2299.
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PMID: 15962050
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