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  - Grotjahn, Manuela
A1  - Drexler, Hans-Joachim
A1  - Jäger, Norbert
A1  - Kleinpeter, Erich
A1  - Holdt, Hans-Jürgen
T1  - Molecular dynamic and conformational study of an unsaturated 12-crown-S202 ether and its AgI complexes
Y1  - 1997
ER  - 
TY  - JOUR
A1  - Drexler, Hans-Joachim
A1  - Starke, Ines
A1  - Grojahn, Manuela
A1  - Reinke, H.
A1  - Kleinpeter, Erich
A1  - Holdt, Hans-Jürgen
T1  - SbCl3, BiCl3 and Na+ Complexes of maleonitrile-dithiacrown ethers: synthesis, crystal structures and DEP-MS experiments
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Grotjahn, Manuela
A1  - Jäger, Norbert
A1  - Drexler, Hans-Joachim
A1  - Holdt, Hans-Jürgen
A1  - Kleinpeter, Erich
T1  - Molecular modeling study of the PtCl2 complexes of unsaturated S2On+1- coronands: dynamic simulations and investigation of the ring interconversion
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Drexler, Hans-Joachim
A1  - Grotjahn, Manuela
A1  - Kleinpeter, Erich
A1  - Holdt, Hans-Jürgen
T1  - A novel polymeric disilver(I) complex containing both macrocyclic- and linear-coordinate silver(I) centres : [Ag-2(mn-15S(2)O(3))](infinity)(ClO4)(2 infinity) (mn-15S(2)O(3) = maleonitrile-dithia[15]crown-5)
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Holdt, Hans-Jürgen
A1  - Drexler, Hans-Joachim
A1  - Starke, Ines
A1  - Grotjahn, Manuela
A1  - Kleinpeter, Erich
T1  - Homologous series of the PdCl2 and PtCl2 complexes of maleonitrile-dithiacrown ethers : synthesis, crystal structures, NMR spectroscopy and mass spectrometry
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Kleinpeter, Erich
A1  - Grotjahn, Manuela
A1  - Klinka, Karel D.
A1  - Drexler, Hans-Joachim
A1  - Holdt, Hans-Jürgen
T1  - Conformational and complexational study of some maleonitrile mixed oxadithia crown ethers by NMR spectroscopy and molecular modelling
N2  - The macrocyclic ring interconversion of four maleonitrile mixed oxadithia crown ethers of variable ring size, mn-12-S2O2, mn-15-S2O3, mn-18-S2O4 and fn-12-S2O2, were studied by 1H and 13C NMR spectroscopy and by molecular modelling. The barriers to ring interconversion were estimated using variable temperature NMR spectroscopy and from the calculated activation energies, together with the spin-lattice relaxation times of the CH2 carbon atoms, conclusions were drawn regarding the intramolecular flexibility of the crown ethers in both the free state as well as the complexed state incorporating either AgI, BiIII, SbIII, PdII or PtII metal cations. Furthermore, both the stoichiometry of the complexes and the coordination sites of the crown ethers to the various cations were also clearly implicated. Molecular modelling was also utilised to ascertain the preferred conformers of the four compounds and their corresponding complexes, the results of which corroborated the experimental NMR results to a high degree.
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Holdt, Hans-Jürgen
A1  - Müller, Holger
A1  - Kelling, Alexandra
A1  - Drexler, Hans-Joachim
A1  - Müller, Thomas
A1  - Schwarze, Thomas
A1  - Schilde, Uwe
A1  - Starke, Ines
T1  - Mercury(II) chloride and iodide complexes of dithia- and tetrathiacrown ethers
N2  - The complexes [(HgCl2)(2)((ch)(2)30S(4)O(6))] (1), [HgCl,(mn21S(2)O(5))] (2), [HgCl2(ch18S(2)O(4))] (3) and [HgI(meb12S(2)O(2))](2)[Hg2I6] (4) have been synthesized, characterized and their crystal structures were determined. In [(HgCl2)(2)((ch)(2)3OS(4)O(6))] two HgCl2 units are discretely bonded within the ligand cavity of the 30-membered dichinoxaline-tetrathia-30-crown-10 ((ch)(2)30S(4)O(6)) forming a binuclear complex. HgCl2 forms I : I "in-cavity" complexes with the 21-membered maleonitrile-dithia-21-crown-7(mn21S(2)O(5)) ligand and the 18-membered chinoxaline- dithia-18-crown-6 (ch18S(2)O(4)) ligand, respectively. The 12-membered 4-methyl-benzo-dithia-12-crown-4 (meb12S(2)O(2)) ligand gave with two equivalents HgI2 the compound [HgI(meb12S(2)O(2))](2)[Hg2I6]. In the cation [HgI(meb12S(2)O(2))](+) meb12S(2)O(2) forms with the cation HgI+ a half-sandwich complex
Y1  - 2006
UR  - http://www3.interscience.wiley.com/cgi-bin/jhome/10005159
U6  - https://doi.org/10.1002/zaac.200500281
SN  - 0044-2313
ER  -