57171-36-5Relevant academic research and scientific papers
Cyclopentasilanderivate mit Uebergangselementen
Hengge, E.,Siegl, H.,Stadelmann, B.
, p. 187 - 192 (1994)
By use of salt elimination, the transition-metal-substituted cyclopentasilanes Me9Si5-Co(CO)3PPh3, Me9Si5-Fe(CO)2Cp, Me9Si5-SiMe2Co(CO)3PPh3 and Me9Si5-SiMe2Fe(CO)2Cp were prepared and characterized.Key words: Silicon; Phosphorus; Iron; Cobalt; Silane; Mo
PROPERTIES AND REACTIONS OF OCTADECAMETHYLBICYCLODECYSILANE
Jenkner, Peter K.,Hengge, Edwin
, p. 25 - 32 (2007/10/02)
The title compound was synthesized by a Wurtz-type condensation of dichlorotetramethyldisilane and trichloromethylsilane under selected conditions.Isolation from a mixture of several other permethylated cyclic, catenated and cage oligosilanes was achieved by RP-HPLC and RP-MPLC methods.ESR-investigations upon chemical reduction were carried out at different temperatures.Reactivity is shown to be distincly different to that of medium-sized monocyclic permethyloligosilanes.The isomeric bi(nonamethylcyclopentasilanyl) was also prepared and pathways to other oligocyclic methylsilanes are shown, starting from monofunctional cyclopentasilanes.
SYNTHESIS AND PROPERTIES OF SUBSTITUTED METHYLCYCLOPOLYSILANES
Helmer, Bradley J.,West, Robert
, p. 21 - 32 (2007/10/02)
Co-condensation of five equivalents Me2SiCl2 and one equivalent RR'SiCl2 with lithium provides the five- and six-membered rings RR'Si(Me2Si)4 and RR'Si(Me2Si)5.This method provides a direct route to the phenyl substituted methylcyclopolysilanes (R,R'=Me, Ph) which can be used for further functionalization of the silicon rings.It also provides several new sterically hindered methylcyclopolysilanes (R,R'=Ph, Ph; Me, t-Bu) which could not be synthesized by the conventional demethylation routes.These products have all been isolated and characterized by their ultraviolet, 1H-, 13C- and 29Si-NMR spectra.
