Silicon compounds

family of acid compounds

Cristobalite ( ) is a mineral polymorph of silica that is formed at very high temperatures. It has the same chemical formula as quartz, SiO2, but a distinct crystal structure. Both quartz and cristobalite are polymorphs with all the members of the quartz group, which also include coesite, tridymite and stishovite. It is named after Cerro San Cristóbal in Pachuca Municipality, Hidalgo, Mexico.

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chemical compound

Moganite is a tectosilicate mineral with the chemical formula SiO2 (silicon dioxide) that was discovered in 1976. The mineral was initially described as a new form of silica, on the basis of specimens found in the Barranco de Medio Almud ravine. This ravine is in the municipality of Mogán, on the island of Gran Canaria, in the Canary Islands region of Spain. In later work, the mineral derived its name from this locality. In 1994, the International Mineralogical Association (IMA) disapproved moganite as a valid mineral, since it was considered to be indistinguishable from quartz. Subsequent stu

chemical compound

Suspensions of fine amorphous silica particles in a liquid

chemical compound

chemical compound

Difluorosilane is a gaseous chemical compound with formula SiH2F2. It can be considered as a derivative of silane with two hydrogen atoms replaced with fluorine.

thumb|Structure of the silazane (Me3SiN)3(SiMe2)3.

'Tris(tert-butoxy)silanethiol' is a silicon compound containing three tert-butoxy groups and a rare Si–S–H functional group. This colourless compound serves as a hydrogen donor in radical chain reactions. It was first prepared by alcoholysis of silicon disulfide and purified by distillation: 3 (CH3)3COH + SiS2 → [(CH3)3CO]3SiSH + H2S

thumbnail|Structure of disilene, the simplest silene

chemical compound

chemical compound

thumb|General repeating unit of polysilanes, where the R's are the same or different organic groups. Polysilanes are organosilicon compounds with the formula (R2Si)n. They are relatives of traditional organic polymers but their backbones are composed of silicon atoms. They exhibit distinctive optical and electrical properties. They are mainly used as precursors to silicon carbide. The simplest polysilane would be (SiH2)n, which is mainly of theoretical, not practical interest.