Main Group Dithiocarbamate Complexes

Abstract

Bismuth / 29 1. Homoleptic Complexes / 29 2. Nonhomoleptic Bis(dithiocarbamate) Complexes / 32 3. Mono(dithiocarbamate) Complexes / 36 4. Antimony(V) Complexes / 39 5. Antimony-121 Mo ¨ssbauer Spectroscopy / 39 VI. GROUP 16 (VI A) 40 A. Homoleptic and Mixed Bidentate Ligand Complexes / 40 B. Nonhomoleptic Tellurium(II) Complexes / 44 C. Nonhomoleptic Tellurium(IV) Complexes / 47 1. Tris(dithiocarbamate) Complexes / 47 2. Bis(dithiocarbamate) Complexes / 49 3. Mono(dithiocarbamate) Complexes / 51 4. Tellurium-125 NMR and Mo ¨ssbauer Spectroscopy / 53

Synthesis, characterization and antifungal activity of new dithiocarbamate-based complexes of Ni(II), Pd(II) and Pt(II)

“…A trigonal planar environment at the nitrogen atoms implies a sp 2 hybridization of the nitrogen atom, which is supported by the sum of the angles C(1)-N(1)-C(2), C(1)-N(1)-C(3) and C(2)-N1-C(3), which equals to 360°. Non-classical secondary bond interactions have been observed in a few dithiocarbamate metallic complexes and reported in the literature [42][43][44]. Two non-classical intramolecular CHÁ Á ÁS bonds are also observed, Fig.…”

Metal-dithiocarbamate complexes: chemistry and biological activity

“…If isolation of the salts is required (for use at a later stage) then this can be effected via slow crystallization from the reaction solution or upon removal of the solvent. Dithiocarbamate salts often co-crystallize with one or more molecules of water and their solid-state structures can be quite complex [3]. The most commonly used examples (R = Me, Et) derive from very volatile amines and are best purchased as the tris(aqua) salts, NaS 2 CNR 2 .3H 2 O, which can easily be dehydrated in a vacuum oven if required dry.…”

“…3). The dithiocarbamate form suggests that there is a lone pair of electrons localized on nitrogen (sp 3 ) and hence this atom should have a pyramidal arrangement of substituents (as seen in amines), while the thioureide is planar (sp 2 ) with the lone pair being delocalized into the backbone carbon-nitrogen bond (which thus acquires double-bond character) and onto the sulfur atoms. Consequently, we consider the dithiocarbamate form as a soft donor ligand, most capable of binding to low-valent metal atoms, while in the thioureide tautomer extra negative charge localized on sulfur and is best considered as a hard donor ligand, most suited to high-valent metal binding (Fig.…”

Crystal structure of bis(2-hydroxyethyl(phenyl)carbamodithioate)nickel(II), C18H20N2NiO2S4

“…Main group and transition metals are known to form complexes with dithiocarbamate ligands [7,8]. Dithiocarbamate ligands can exist in different stable contributing resonance structures, which dictate the primary mode of bonding for different metals [9].…”