作者:Stefan K. Mueller、Ana Dzambaski、Nicola Altenhuber、Ana Torvisco、Karl Hassler、Michaela Flock
DOI:10.1016/j.molstruc.2015.06.005
日期:2015.11
Ring closure reaction of 2,5-dipotassium-2,5-bis(trimethylsilyl)-decamethylhexasilane with trichlorosilane yields the sterically protected halogenated cyclopentasilane 1. Reaction of 1 with lithium aluminum hydride leads to the cyclopentasilane 2. The corresponding difluoro-, dichloro-, dibromo- and diiodo-derivatives 3, 4, 5, and 6 are accessible via derivatization reactions from 1 (4) or 2 (3, 5, 6). All compounds have been structurally characterized by X-Ray diffraction analysis. Comparison of measured Si-29 NMR chemical shifts with data obtained from density functional theory (DFT) calculations showed outstanding performance of the M06L functional in the calculation of magnetic shieldings. (C) 2015 Elsevier B.V. All rights reserved.