Bis(2‐benzothiazolyl)tetrasulfane prepared from the mercaptane and S2Cl2 crystallizes in the monoclinic space group C2/c with a = 3513 pm, b = 577.28 pm, c = 800.0 pm, β = 98.74°, ρ = 1.64 g cm−3 (at 298 K). The molecules are of C2 symmetry with the geometrical parameters of the S4 backbone: dss = 202.7 (terminal) and 207.3 pm (central), αsss = 106.4°, τssss = 78.5°. The overall conformation is all‐trans.
Bis(4‐chlorophenyl)tetrasulfane prepared from the mercaptane and diisopropoxydisulfane crystallizes in the monoclinic space group P21/a with a = 1237.7 pm, b = 748.4 pm, c = 1623.9 pm, β = 105.58°, ρ = 1.61 g cm−3 (at 298 K). The molecules occupy general positions but are approximately of C2 symmetry with dss = 203.6 (terminal), 206.7 (central) and 202.3 pm (terminal), αsss = 107.4° and 108.4°, τssss = 75.5° (all‐trans conformation). The intermolecular interactions are of van der Waals type. Infrared, Raman, mass and NMR spectra (1H, 13C) are reported.
The insertion of titanocene, prepared from the corresponding dicarbonyl complex, into SS bonds of S7NH and S7NMe affords the complexes 1 and 2, respectively, which are suitable as precursors for large SN rings. The treatment of 2 with SCl2 and S2Cl2 yields the imides S8NMe and S9NMe, respectively.
ZUSCHRIFTEN recht zur C4-Ga-C8-Ebene. Somit gibt die Molekiilstruktur von 7 keinen Hinweis auf eine Ga-C-n-Bindung.Die elektronische Isolierung des Ga-Atoms in 7 ist wahrscheinlich eine Folge sterischer Effekte. Wurde das Ga-Atom auf die Ringebene zugeschobeneine Voraussetzung fur die @-Koordination -, so wurden sich die ortho-standige tert-Butylgruppe (C24, C26) und die Carbonylgruppe (C3, 0 3 ) sterisch sehr stark hindern. Cowley et al. haben gefunden, da13 das planare 1-(2,4,6-Tri-tert-butyIphenyl)-2,3,4,5tetramethylgallol bei der Komplexierung an eine CpCo-Gruppe durch Wegklappen des Ga-Atoms vom Metallzentrum verzerrt wird, wobei 10 entsteht[*]. Wir beabsichtigen, Derivate von 7 rnit kleineren Substituenten am Galliumatom zu synthetisieren,
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