title: Technetium(I) carbonyl dithiocarbamates and xanthates.
abstract: Technetium(I) tetracarbonyl complexes with diethyldithiocarbamate and methylxanthate ligands [TcL(CO)(4)] (L = S(2)CNEt(2) and S(2)COMe) were prepared. Conditions required for the formation of these complexes were found. The crystal and molecular structure of the xanthate complex was determined by single-crystal X-ray diffraction. [Tc(S(2)CNEt(2))(CO)(4)] undergoes decarbonylation both in solution and in the course of vacuum sublimation with the formation of a dimer [Tc(S(2)CNEt(2))(CO)(3)](2) whose structure was determined by single-crystal X-ray diffraction. In donor solvents, [Tc(S(2)CNEt(2))(CO)(4)] and [Tc(S(2)COMe)(CO)(4)] undergo decarbonylation with the formation of tricarbonyl solvates [TcL(CO)(3)(Sol)]. The crystal structure of the pyridine solvate [Tc(S(2)CNEt(2))(CO)(3)(py)], chosen as an example, was determined by single-crystal X-ray diffraction. The possibility of using bidentate S-donor acidic ligands for tethering the tetracarbonyltechnetium fragment to biomolecules was examined.
authors.affiliation: Khlopin Radium Institute, Research and Production Association, Federal State Unitary Enterprise, St. Petersburg, Russia. amiroslavov@khlopin.ru
authors.forename: A E
authors.initials: AE
authors.lastname: Miroslavov
authors.forename: G V
authors.initials: GV
authors.lastname: Sidorenko
authors.forename: D N
authors.initials: DN
authors.lastname: Suglobov
authors.forename: A A
authors.initials: AA
authors.lastname: Lumpov
authors.forename: V V
authors.initials: VV
authors.lastname: Gurzhiy
authors.forename: M S
authors.initials: MS
authors.lastname: Grigor'ev
authors.forename: V A
authors.initials: VA
authors.lastname: Mikhalev
mesh_terms: D018360:Crystallography, X-Ray; D008024:Ligands; D008958:Models, Molecular; D015609:Organotechnetium Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D019275:Radiopharmaceuticals / Q000138:chemical synthesis / Q000737:chemistry*; D013859:Thiocarbamates / Q000138:chemical synthesis / Q000737:chemistry*; D014970:Xanthines / Q000138:chemical synthesis / Q000737:chemistry
chemical_list: D008024:Ligands; D015609:Organotechnetium Compounds; D019275:Radiopharmaceuticals; D013859:Thiocarbamates; D014970:Xanthines