Tellurium-donor ligands

Complexes with sulfur, selenium, and tellurium donor ligands 959... 

COMPLEXES OF GOLD(IH) WITH SULFUR, SELENIUM AND TELLURIUM DONOR LIGANDS... 

Oxygen, Sulfur, Selenium, and Tellurium Donor Ligands 6.01.6.1 Oxygen... 

This section of the coverage of palladium(II) coordination chemistry will concentrate on complexes of the more common, usually unidentate ligands containing sulfur, selenium or tellurium donor atoms coverage of the vast number of chelate complexes of bi- or multi-dentate ligands will be limited but the reader will find references to most classes of palladium(II) chelate complexes and these will provide an entry into the literature. 

Complexes 56 [87] and 57 [82-85] are of considerable interest. During the formation of the first compound, both atomic and molecular tellurium participate simultaneously in the second one, Te2 carries out the functions of a-bridge and 7t-donor ligand [82-85], The cases are known when two diselenide bridges (for example, 58) and pentaselenide rj1 -terminal (59) ligation occurs [82-85] ... 

The examined compound behaves as an N,Te-donor ligand also in analogous cobalt and copper complexes [922]. The N,Te-ligand environment is very likely for complexes 530 [923], 531 [924], adduct 532 [925], and tellurium-containing macrocyclic Schiff bases 533 [926] ... 

The coordinatively unsaturated aryl tellurium halides interact with electron-donor ligands to form complexes. The aryl tellurium halides prepared from diphenyl ditellurium and halogens were used in situ. Thiourea, selenourea (X = Cl, Br)3, tetramethylthio- and... 

Although tellurium chemistry has been reasonably well studied, only relatively few mixed donor ligands have been described. A hard soft N,Te donor didentate is (47). An... 

Thiocyanogen and diaryl ditellurium derivatives react in dry methanol in the dark at — 10° to form unstable aryl tellurium thiocyanates that were isolated as adducts with neutral N-, 0-, or S-donor ligands. ... 

Aryl tellurium trichlorides and N-, S-, or 0-donor ligands form 1 1 complexes when the components are combined in an organic solvent. Several complexes with a 1 2 stoichiometry and one complex with a 1 4 stoichiometry were also prepared. The few complexes of alkyl tellurium trihalides that are reported in the literature all have 1 1 stoichiometry The following organic compounds served as ligands. ... 

The diaryl tellurium perchlorates were isolated as complexes with N- or O-donor ligands. ... 

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