Synthesis, spectroscopic characterization and structural studies of dialkyl dithiophosphinate and N,N-dialkyl dithio- and monothio-carbamate derivatives of 1-iodo-1,1,2,3,4,5-hexahydrotellurophene

Reactions of cis‐2,3‐Dimethylaziridine, 3‐Pyrroline and Pyrrolidine with Me3Al and Me3Ga: Adducts and Dimeric Amides

“…[18] For pyrroline, however, the only crystallographic data available is for two derivatives containing π-acceptor substituents at nitrogen. [19] The only available ''non-disordered'' X-ray structure for pyrrolidine available to date concerns a molecule intercalated in an aluminophosphate. [20] Relevant data are collected in Table 2.…”

Organotellurium Compounds: From Molecular to Supramolecular Chemistry

“…The structural diversity at tellurium in the complexes is observed due to (a) strong tendency to form supramolecular associations through inter-and intramolecular Te---donor atom interactions and (b) the presence of stereochemically active lone pair at the tellurium centre. Further, Dakternieks et al [28][29][30] and others [31,32] reported supramolecular associations in organotellurium dithiocarbamates, dithiocarbonates and dithiophosphates formed through Te---S secondary interactions. These complexes have been characterized by elemental analyses, IR, ( bipyramidal.…”

Synthesis and spectroscopic characterization of eleven mixed-ligand diorganotellurium(IV) compounds containing dithiocarbamate and dithiophosphate ligands

“…IR spectra were recorded in the region of 4000e500 cm À1 as KBr pellets using a Bruker Vector 22 FT spectrophotometer. 1 H, 13 C, 31 P and 125 Te NMR spectra were recorded on Varian Gemini 200 and Varian Inova 400 equipments at room temperature in CDCl 3 . The chemical shifts are relative to internal Me 4 Si ( 1 H and 13 C), external 85% H 3 PO 4 ( 31 P) and 1,1-diiodotellurolane, C 4 H 8 TeI 2 ( 125 Te).…”

“…With bidentate ligands the ligand bonding is usually anisobidentate (unsymmetrical bidentate) and, generally, the lone pair at the tellurium center is stereochemically active [1]. So far, relatively few derivatives containing mixed ligands have prepared [2e6], but it seems that the use of two different ligand types reduces the tendency for intermolecular association.…”