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  - http://onlinelibrary.wiley.com/doi/10.1002/crat.200610776/pdf
U6  - https://doi.org/10.1002/crat.200610776
ER  - 
TY  - JOUR
A1  - Laschewsky, André
A1  - Pound, Gwenaelle
A1  - Skrabania, Katja
A1  - Holdt, Hans-Joachim
A1  - Teller, Joachim
T1  - Unsymmetrical bifunctional trithiocarbonate as unexpected by-product in the synthesis of a dithioester RAFT agent
N2  - The trithiocarbonate 2-(benzylsulfanylthiocarbonylsulfanyl) propanoic acid is formed as minor by-product in the synthesis of the dithioester 2-((2-phenylthioacetyl)sulfanyl) propanoic acid via the Grignard route. The mechanism for this side reaction is not clear. The isolated trithiocarbonate may act as unsymmetrical but bifunctional RAFT agent in the aqueous polymerization of N,N-dimethyl acrylamide. Therefore, it is important to separate it completely from the dithioester before engaging the latter in controlled free radical polymerization to guarantee a maximum control.
Y1  - 2007
UR  - http://www.springerlink.com/content/101551
U6  - https://doi.org/10.1007/s.00396-007-1653-5
SN  - 0303-402X
ER  -