Dithiocarbimates from Sulfonamides, Part 2: Preparation and X-Ray Crystal Structures o f (PPh4)2[Ni(S2C = N —S 0 2—Ph)2] and (PPh4)2[Ni(S2C = N —S 0 2—C6H4—CI)2] * 2 H20

Abstract

By reaction of K2[S2CNSO2C6H5] · 2H2O and K2[S2CNSO2C6H4Cl] · 2H2O, respectively, with Ni(CH3COO)2 · 4H2O the complex anions [Ni(S2C = N-(SO2-C6H5)2]2- and [Ni(S2C = N-SO2-C6H4-Cl)2]2- are formed and have been isolated in form of their (PPh4) salts. (PPh4)2[Ni(S2C = N-SO2-Ph)2] crystallizes monoclinicly. space group P21/a with a = 19.081(4), b = 9.106(1), c = 17.630(4) Å and β = 113.42(6)° with Z = 2. (PPh4)2[Ni(S2C = N-SO2-C6H4-Cl)2] · 2H2O crystallizes triclinicly, and the non-standard setting Cl has been choosen with a = 15.732(3), b = 22.509(4), c = 9.521(1) Å , ɑ = 96.30(6), β = 117.57(9), γ = 88.93(5)° and Z = 2. Within the complex anions nickel has the site-symmetry 1 and is coordinated by four sulfur atoms with Ni-S mean = 2.198 Å. The Ni(S2C = N-SO)2 units are essentially planar in both systems. This planarity gives rise to conjugation effects involving the SO2 group and the π-system of S2C = N - as well as the lone pair on N.

Zinc‐dithiocarbimates for the control of Hemileia vastatrix: a versatile alternative

“…8,20 The C = N bonds have a double bond character and are slightly longer than the expected value for a typical double C(sp2) = N(sp2) bond (1.279 Å) but shorter than those observed in the free ligands, in agreement with the NMR and IR analyses. 16,34 The bond lengths and angles in the cations (1) and ( 2) are within the reported ranges. 8,35 The nitrogen atom environment presents a tetrahedral distorted geometry.…”

“…2H 2 O, where R = CH 3 (A), CH 3 CH 2 (B), CH 3 (CH 2 ) 3 (C), CH 3 (CH 2 ) 7 (D), C 6 H 5 (E), 4F-C 6 H 4 (F), 4Cl-C 6 H 4 (G), 4CH 3 -C 6 H 4 (H) and 4CH 3 O-C 6 H 4 (I), were prepared from the parent primary sulfonamides in reaction with carbon disulfide (Vetec) and two equivalents of potassium hydroxide (Vetec) in dimethylformamide (Vetec), and their spectroscopic data were in accordance with the literature. [13][14][15][16][17][18]…”