Synthesis, spectroscopic characterization of O,O-alkylene dithiophosphates of tellurolane and 1-oxa-4-tellurane. Single crystal structures of C4H8Te[S2P(OCH2)2CMe-nPr]2 and C4H8OTe[S2P(OCH2)2CEt2]2

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

“…For the dithiophosphate ligands the signals corresponding to the POCH 2 hydrogens appear as doublets in the region from 4.03 to 4.15 ppm with 3 J PeH coupling constants ranging from 15.3 to 16.2 Hz. These values are close to those observed for the corresponding disubstituted diorganotellurium bis(dithiophosphates) [14]. For the a-CH 2 hydrogen atoms of the tellurocycles, small upfield shifts occurred when compared to the starting monosubstituted organotellurium dithiocarbamates [8].…”

“…It has been proposed that the shift difference between the free acid and the corresponding complex is a strong indicator of the metal binding mode [16]. The shift differences calculated [14], which reflects the stronger donor capability of dithiocarbamate when compared with the dithiophosphate ligand.…”

“…Alternatively, the coordination geometries could be considered also as distorted octahedral [14]. Because of the intermolecular secondary bonds, in compounds 2b and 6 the four sulfur atoms of the covalently bound SCS and SPS groups and one of the carbon atoms of the organic substituent attached to tellurium form an approximate pentagonal plane, while the fifth sulfur and the remaining carbon atom approach from opposite axial directions.…”

Reactions of 1,1-Diiodo-3,4-benzocyclopentatellurane with Sulfur and Selenium Ligands: X-Ray Structure of a Dicationic Telluraheterocycle, [C8H8Te{S=C(NMe2)2}2][BF4]2

“…Related compounds including a non-aromatic C 4 H 8 Te heterocycle are included in Table III. 27 There is also a series of reported "half-metathesized" compounds in which one of the halogens in the C 8 H 8 TeI 2 starting material has been replaced with the usual type of ligand. We were unable to isolate any mixed complexes of the type [C 8 H 8 TeI(L)]BF 4 in the course of our investigations, even with careful control over the stoichiometry of the reaction (one equivalent of ligand and one equivalent of silver tetrafluoroborate).…”

Spectroscopic, Thermal, Electrochemical, and Antimicrobial Studies of Mononuclear Manganese(II) Ditolyldithiophosphates

“…Among sulfur donor ligands, O,O ′-dialkyl and alkylene dithiophosphates have been used for producing potential coordination compounds with most of the metals [7–10]. These soft donor ligands are versatile ligands which show both monodentate [11, 12]and bidentate [13–18] behaviour and form complexes with various metal ions, mainly transition metals [16–18].…”