Chemistry of 2-mercaptophenol (H2mp) . Part iii. One dimensional arrays of binuclear anions of Mo (VI) linked by bis (2-hydroxyphenyl) disulfide via hydrogen bondings

The reaction of (Bu4N) 4 [Mo8O26] with a suitable amount of 2-mercaptophenol (H2mp) in MeOH in the presence of equimolar Et3N gave the complex (Bu4N) 2 [{MoO2 (2-SC6H4O) }2 (μ-O) ] (2 2′-HOC6H4SSC6H4OH) 2H2O (1) with a one-dimensional chain network formed via hydrogen bondings (average OH OMo distance 2655 A) of the hydroxyl groups in the spacer 2 2′-HOC6H4SSC6H4OH with the terminal oxo groups of the dimolybdenum anions 2 2′-HOC6H4SSC6H4OH was obtained by oxidation of H2mp in the presence of molybdenum when the reaction was run in air The characteristic cis-MoO22 absorptions appear at 913 and 864 cm−1 1 H NMR and 1 H–1 H COSY spectra characterized the phenyl protons of the mercaptophenol groups in the anion and in 22′-HOC6H4SSC6H4OH in the ranges of 6700–6270 and 7368–6799 ppmrespectivelywith 3J and 4J coupling constants of 8 and 1 Hz respectively.