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Oxidorhenium(V) complexes with N,N‐dialkyl‐N′‐benzoylselenoureas (HL) were prepared from reactions with (NBu4)[ReOCl4]. The formation of compounds such as [ReO(L‐κO,Se)2(OMe)] or [{ReO(L‐κO,Se)2}2O] suggests parallels with the established chemistry of corresponding benzoylthioureas, while the isolation of unusual species such as [ReO(L‐κO,Se)2(L‐κSe)], [{ReO(L‐κO,Se)2}2Se3] and the formation of the respective diselenide suggest a more complicated reaction pathway with the unstable selenium compounds, and one in which degradation products of the ligands also plays a role.

Keywords: Tellurium / Ligand design / Palladium / Platinum / Mercury / Solid-state structures N-[3-(Phenyltellanyl)propyl]picolinamide (HL1) or N-[NЈЈ,NЈЈ-methyl(phenyl)aminothiocarbonyl]-NЈ-[3-(phenyltellanyl)propyl]benzamidine (HL2) react with equivalent amounts of PtCl 2 or PdCl 2 with formation of neutral [MCl(L1-κN,NЈ,Te)] or [MCl(L2-κS,N,Te)] chelates. A corresponding reaction of HL2 with HgCl 2 results in the formation of [HgCl 2 (HL2-κS,Te)]. Treatment of [PtCl(L1-N,NЈ,Te)] with elemental iodine results in the exclusive oxidation of the metal [a] Scheme 2. Synthesis of HL1 and HL2.Both products were obtained as viscous oils, which could not be solidified even after several chromatographic purifi-Eur.

This work is related to ZnII and CdII complexes with isophthaloylbis(thioureas), describing synthesis, characterization and fluorescence properties. In this work, the crystal structure of isophthaloylbis(N,N-diphenylthiourea) is described as a dimethyl...

The title compound, [Pb(C4H3N2S)2]n, was prepared by the reaction of [Pb(OAc)2]·3H2O (OAc is acetate) with pyrimidine-2-thione in the presence of triethylamine in methanol. In the crystal structure, the Pb(II) atom has an N4S4 coordination environment with four ligands coordinated by N- and S-donor atoms. This compound shows that the pyrimidine-2-thiolate anion can lead to a three-dimensional network when the coordination number of the metal ion can be higher than 6, as is the case with the Pb(II) ion. This compound presents only covalent bonds, showing that despite the possibility of the hemidirected geometries of Pb(II), the eight-coordinated ion does not allow the formation of an isolated molecular structure with pyrimidine-2-thiolate as the ligand.