Dimetílico

Dimetílico is a term used in Spanish and Portuguese to describe chemical substances that contain two methyl groups, or substituents derived from two methyl groups. It corresponds to the English prefix dimethyl- and is used to indicate that two methyl units are attached to the same atom or to the molecule’s carbon framework.

Usage varies by language and nomenclature tradition. In naming, dimetílico can describe fragments or full compounds with two methyl substituents. It is more common in regional or older literature; many contemporary Spanish-language texts employ the neutral form dimetil- or simply adopt the English dimethyl- in technical writing, depending on the nomenclature rules in use.

Examples commonly cited in English include dimethyl ether, dimethyl carbonate, and dimethyl sulfoxide. When rendered in Spanish, these compounds are typically referred to with corresponding dimetílico or dimetil forms, reflecting the two methyl groups described by the term; exact names depend on the specific naming conventions of a given community or journal.

Dimetílico also appears in the names of organometallic and other compounds where two methyl groups are ligands or substituents, such as metal dimethyl species or silicon- or phosphorus-centered dimethyl substituents. The term therefore functions as a descriptive descriptor bridging Spanish/Portuguese nomenclature with the broader international practice of naming dimethyl-containing compounds.