Alkylsilanes

Part of speech: noun

Definitions

1. Compounds consisting of alkyl groups attached to silicon atoms, used in chemical synthesis and materials science
2. Molecules made by bonding alkyl chains to silicon centers, commonly applied in producing silicone materials and organosilicon compounds
3. Substances formed by linking carbon-containing alkyl groups to silicon, often utilized as intermediates in organosilicon chemistry

Etymology: Alkylsilanes are named for a chain of linked components: the "alkyl" part, which is a chemist's family name for hydrocarbon groups, and the "silane" part, which refers to silicon hydrides. The first half traces back to a remarkable path. Its ancestor is the Akkadian "guḫlum," a word for a dark eye cosmetic, which passed through Aramaic and Arabic "kuḥl," meaning antimony or kohl powder. Medieval Latin borrowed the Arabic word as "alcohol," and that term reached English in its older sense of a fine powder before narrowing to the liquid we know. The "-yl" ending was added by nineteenth-century chemists to mark alkyl radicals, and "alk-" was clipped from "alcohol," since these groups derive from alcohols. The second element, "silane," is a modern coinage built from "silicon," which itself was formed from "silica" with an added element ending, and the "-ane" suffix that chemists use for saturated hydrides, as in "methane." The compound is therefore a deliberate chemical coinage, joining the two terms in a way that describes the molecule's structure: an organic group attached to a silicon-hydrogen framework.

Synonyms: organosilanes, alkylsilicons