Synthesis and crystal structure of π complex of copper(I) chloride with diallyl trisulfide 2CuCl · DATrS

Crystal structure of bis(μ2-4-bromo-2-[({2-[({2-[(5-bromo-2-oxidobenzylidene)amino]ethyl}sulfanyl)sulfonyl]ethyl}imino)methyl]phenolato)dicopper(II) dimethylformamide disolvate

“…(Dhar et al, 2004(Dhar et al, , 2005 and similar weak intermolecularstacking interactions (Dhar et al, 2005). The value of the the SÁ Á ÁBr contact in the title compound is in good agreement with those in related complexes (CSD refcodes WEMCAT and QELVIN; Salivon et al, 2006Salivon et al, , 2007CSD refcode PODDAO;Xia et al, 2008)…”

Bis{μ-2,2′-[(3,4-dithiahexane-1,6-diyl)bis(nitrilomethanylylidene)]bis(4-bromophenolato)-κ4O,N,N′,O′}dicopper(II)

“…Unlabelled atoms are related to labelled ones by the symmetry operation (Dhar et al, 2004(Dhar et al, , 2005. The length of the SÁ Á ÁBr contact in the title compound is in good agreement with those in related complexes (CSD refcodes WEMCAT and QELVIN; Salivon et al, 2006Salivon et al, , 2007CSD refcode PODDAO;Xia et al, 2008)…”

Unusual C–N Coupling Reactivity of Thiopyridazines: Efficient Synthesis of Iron Diorganotrisulfide Complexes

“…Therefore, four doublets appear at 7.88, 7.78, 7.73, and 7.40 ppm, integrating in a 1:1:1:1 ratio for the aromatic protons and two singlets at 1.48 and 1.28 ppm, each integrating for nine protons for the tert-butyl groups (Figures S2 and S3). This is confirmed by the 13 C NMR spectrum, where resonances for 12 carbon atoms can be found supporting the formation of the C− N-coupled product.…”

“…However, the coordination chemistry of trisulfide-containing molecules is far less investigated, which is surprising in view of the high abundance of metals in biological systems. − A Cambridge database search revealed only four crystallographically characterized examples of a metal complex with a directly coordinated S 3 unit. ,,, Some of them were prepared by the solvo- and hydrothermal synthesis of mercaptopyrimidine disulfide and a metal precursor. ,, While this gives some insight into the coordination properties of the biologically active class of compounds, the thermal synthesis is usually nonselective because several sulfur-containing products were detected. ,, Thus, there is a high need for a better understanding of the coordination chemistry of S 3 units, as well as for their formation from sulfur precursors in the presence of metal salts.…”

“…Characterization by 1 H and 13 C NMR spectroscopy as well as by single-crystal X-ray diffraction analysis (vide infra) revealed the products to be C−N-coupled pyridazinylthiopyridazine molecules. This clearly explains the need for 8 rather than 6 equiv of thiopyridazines in the overall reaction shown in Scheme 1.…”