Mechanochemical synthesis of soluble complexes containing M3S74+ and M3Se74+ fragments from polymeric M3Y7Br4 (M  Mo, W; Y  S, Se). The crystal structure of (PPN)2W3S7Cl6

Mechanochemistry: opportunities for new and cleaner synthesis

“…Thus the inert species [Nb 2 (E 2 ) 2 Cl 4 ] N (E=S, Se) react with anionic bidentate ligands LL, such as dithiocarbamates, xanthates and oxalate salts, to form [Nb 2 (E 2 ) 2 (LL) 4 ] with the elimination of chloride, 258 and [M 3 E 7 Br 4 ] N (M=Mo, W; E=S, Se) can be broken up with oxalate to give [M 3 E 7 (ox) 3 ] 2À anions 259 or with bromide to make [M 3 E 7 Br 6 ] 2À . 260 Grinding polymeric VO(salen) is suggested to give monomers directly without added ligands. 261…”

Enantioselective synthesis of tungsten trimetallic cluster chalcogenides

“…The polymeric {W 3 Q 7 Br 4 } n phases were prepared according to literature methods [31,32]. The remaining reactants were obtained from commercial sources.…”

Mo3Q7 (Q = S, Se) Clusters Containing Dithiolate/Diselenolate Ligands: Synthesis, Structures, and Their Use as Precursors of Magnetic Single‐Component Molecular Conductors

“…Preparation of ( n Bu 4 N) 3 {[Mo 3 Se 7 Br 6 ]Br}: Polymeric {Mo 3 Se 7 Br 4 } n (1.0 g),17 ( n Bu 4 N)Br (1.0 g), and acetonitrile (4 mL) were mixed together in a quartz reactor. The mixture was stirred under conditions of microwave activation (power: 250 W, temperature: 150 °C, pressure: 2–3 bar) for 4 h. After filtration, the dark‐red solution was taken to dryness and the resulting product was washed with copious amounts of 2‐propanol and diethyl ether, and then dried in air.…”