TY  - JOUR
A1  - Rudershausen, S.
A1  - Drexler, Hans-Joachim
A1  - Banße, Wolfgang
A1  - Kelling, Alexandra
A1  - Schilde, Uwe
A1  - Holdt, Hans-Joachim
T1  - Three polymorphs of bis(5-methylthio-1,2-dithiole-3-thione)-disulfide
N2  - The title compound, bis(5-methylthio-1,2-dithiole-3-thione)-disulfide, was yielded for the first time as by- product of the reaction of nickel(II) and cobalt(II) ions with 5-methylthio-1,2-dithiole-3-thione-4-thiolate. The compound can be obtained directly by oxidation of the ammonium salt of the ligand. C8H6S10 forms three polymorphs: (I), which crystallizes in the orthorhombic space group P212121, (II) and (III), which crystallize in the monoclinic space groups P21/c and P21/n, respectively. The crystal and molecular structures are presented here. The determination of the absolute configuration of (I) indicated the P-helical enantiomer. In contrast to this, the crystals of (II) und (III) are racemic, containing P- and M-helical enantiomers. The polymorphs differ in the kind of skewing around the disulfide bond and of the positions of the both dithiole rings to the S-S-moiety
Y1  - 2007
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/32498
UR  - http://onlinelibrary.wiley.com/doi/10.1002/crat.200610776/pdf
ER  -