Sulfurbridged
Sulfur-bridged refers to a structural motif in which sulfur atoms serve as bridges that connect two parts of a molecule, a metal center, or two fragments of a cluster. In inorganic and organometallic chemistry, sulfur bridges most often take the form of μ-S ligands (sulfide, S2−) or multisulfur linkages that connect two metal centers, producing di- or polynuclear complexes. A common variant is the μ2-sulfide bridge, where a single sulfur atom links two metals, while μ3- or μ4-sulfide bridges connect three or four centers within a cluster. Sulfur can also link organic fragments as thioether bridges (−S−) or form disulfide bridges (−S−S−) between parts of a molecule.
Occurrences and significance: Sulfur-bridged motifs are widespread in metal-sulfur clusters, including tetra- or octa-nuclear clusters, as
Preparation and analysis: Sulfur bridges are typically introduced during the self-assembly of metal-sulfur clusters from sulfide
Applications: In bioinorganic modeling, catalysis, and materials science, sulfur-bridged motifs provide structural motifs and electronic communication