sulfide

Thân thiện

A scientist carefully handles a sample of iron sulfide in the laboratory.

Definition

Noun: 1. A chemical compound: A sulfide is a compound consisting of sulfur and one or more other elements, typically a metal or another element that is more electropositive than sulfur. In these compounds, sulfur typically has an oxidation state of -2.

Usage Examples

• Noun:
  • Iron sulfide is a common mineral with a metallic luster.
  • The characteristic smell of rotten eggs is due to hydrogen sulfide gas.
  • Many metal sulfides are important ores from which metals like copper, lead, and zinc are extracted.

Advanced Usage

• Inorganic Chemistry: The term "sulfide" primarily refers to inorganic salts containing the S²⁻ anion (e.g., sodium sulfide, Na₂S) or covalent compounds like hydrogen sulfide (H₂S).
• Organic Chemistry: In organic chemistry, the functional group -S- is called a "sulfide" or "thioether" when it connects two organic groups (e.g., dimethyl sulfide, CH₃SCH₃). This is a distinct but related usage.

Variants and Related Words

• Sulphide: (noun) The British English spelling of "sulfide."
• Bisulfide / Disulfide: (noun) Compounds containing the HS⁻ anion or the -S-S- group, respectively (e.g., carbon disulfide, CS₂).
• Polysulfide: (noun) A compound containing chains of sulfur atoms (e.g., ammonium polysulfide).

Synonyms

• Thioether: (noun) Specifically for organic compounds with a C-S-C linkage.
• Sulfur compound: (noun) A broader, more general term.

Related Phrases

• Metal sulfide: (noun phrase) A very common type of sulfide compound.
• Sulfide mineral: (noun phrase) A naturally occurring inorganic solid with a sulfide composition, such as pyrite (FeS₂) or galena (PbS).

Học thuật

Noun

1. a compound of sulphur and some other element that is more electropositive

Từ đồng nghĩa

• sulphide