Crystal Structure of Bis{1-methylthio-1-[1-phenyl-1-(1-phenyl-3-methyl-5-oxo-4,5-dihydropyrazol-4-ylene)-methylamino]-iminomethyl} Disulfide with the “U” Conformation

✍ Scribed by Lang Liu; Ya-Li Ji; Dian-Zeng Jia; Guang-Fei Liu; Kai-Bei Yu

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 78 KB
• Volume: 23
• Category: Article
• ISSN: 0256-7660
• DOI: 10.1002/cjoc.200590014

✦ Synopsis

Abstract

The reaction of 1‐phenyl‐3‐methyl‐4‐benzoyl‐2,5‐dihydro‐1__H__‐pyrazol‐5‐one (PMBP) and methyldithiocarbazate (mdtc) in methanol results in formation of a yellow crystalline solid, adduct of 1‐phenyl‐3‐methyl‐4‐benzoyl‐2,5‐dihydro‐1__H__‐pyrazol‐5‐one and methyldithiocarbazate. When the yellow solids were dissolved in a mixture of methanol and ether (1:4), a red crystal, which is an oxidation product of the former, was obtained by allowing solvent to evaporate for a few days at room temperature. The X‐ray analysis of the red crystal indicates that it is a novel disulfide with a special structure like a “U” conformation in the solid state.