Several aggregates of V2O2(μ-S)2 units. Syntheses, structures and properties of (Et4N)3{[V2S2O2(Et2dtc)2]2K}, (Et4N)2(NH4){[V2S2O2(C5H10dtc)2]2Na}, and (Et4N)3{[V2S2O2(Me2dtc)2]3Na3(H2O)} (dtc=dithiocarbamate)

The remarkable propensity for the formation of C–H⋯π(chelate ring) interactions in the crystals of the first-row transition metal dithiocarbamates and the supramolecular architectures they sustain

C–H⋯π(chelate ring) interactions play an important role in assembling first-row transition metal dithiocarbamates in their crystals.

A Coordination Network with Ligand-Centered Redox Activity Based on facial-[CrIII (2-mercaptophenolato)3 ]3- Metalloligands

The design of redox-active metal-organic frameworks and coordination networks (CNs), which exhibit metal- and/or ligand-centered redox activity, has recently received increased attention. In this study, the redox-active metalloligand (RML) [Me₄ N]₃ fac-[Cr^III (mp)₃ ] (1) (mp=2-mercaptophenolato) was synthesized and characterized by single-crystal X-ray diffraction analysis, and its reversible ligand-centered one-electron oxidation was examined by cyclic voltammetry and spectroelectrochemical measurements. Since complex 1 contains O/S coordination sites in three directions, complexation with K⁺ ions led to the formation of the two-dimensional honeycomb sheet-structured [K₃ fac-{Cr^III (mp)₃ }(H₂ O)₆ ]_n (2⋅6 H₂ O), which is the first example of a redox-active CN constructed from a RML with o-disubstituted benzene ligands. Herein, we unambiguously demonstrate the ligand-centered redox activity of the RML within the CN 2⋅6 H₂ O in the solid state.

Tetrabutylammonium bis[4,4′-dimethyl-2,2′-(3,7-dimethyl-1H-4,2,1-benzothiazasiline-1,1-diyl)dibenzenethiolato]vanadium(III) acetonitrile tetrasolvate

In the title compound, [N(C₄H₉)₄][V(C₂₃H₂₁NS₃Si)₂]·4CH₃CN, the V^III atom (site symmetry ) is coordinated by two N,S,S′-tridentate 4,4′-dimethyl-2,2′-(3,7-dimethyl-1H-4,2,1-benzothiaza­siline-1,1-di­yl)dibenzene­thiol­ate ligands in a distorted trans-VN₂S₄ octa­hedral geometry. The complete cation is generated by crystallographic twofold symmetry, with the V atom lying on the rotation axis. The unusual ligand arose from nucleophilic attack on the coordinated nitrile by the thiol­ate precursor and reduction of nitrile to the imidate.