Si. Silicium. Silicon (System-Nr. 15)
2 total works
S-i / B / 1-5 / 8
Ternary Silicon-Fluorine-Hydrogen Compounds
by Werner Behrendt, Reinhard Haubold, Hannelore Keller-Rudek, and Sigrid Ruprecht
Published 31 May 1996
The volume provides complete and up-to-date information on the few chemical species composed of silicon, fluorine, and noble gases and in the major part on the species composed of silicon, fluorine, and hydrogen. Among the numerous experimentally confirmed and theoretically predicted monosilicon Si-H-F species with Si coordination numbers 2, 3, and 4, the most prominent and best investigated molecules by far are Si H3F, Si H2F2, and Si H F3. Even more has been reported about aqueous solutions of hexafluorosilicic acid, "H2Si F6", a system which is not yet completely understood. Some of the isomers of partially fluorinated di-, tri-, and tetrasilanes are known to some extent, but information on the higher acyclic and cyclic polysilanes is increasingly sparce.
S-i / B / 1-5 / 9
The volume covers some 750 Si-F and Si(H)-F species which have additional bonds to oxygen, nitrogen, or both; O- and N-organylsubstituted derivatives and fluorosilicates are included. With Si coordination numbers ranging from two to six, the volume presents a broad spectrum of chemical topics. They extend from theoretical calculations on the stabilities and properties of the unstable SiFHO structural isomers, via preparative and structural results for penta- and hexacoordinated SiF4 adducts, to the use of fluoroalkoxysilanes in the formation of silicon films at low temperature, and the various methods of manufacturing (NH4)2SiF6. The physical properties of the ions in this salt were also studied at length.