Binuclear complexes of technetium. Synthesis and characterization of binuclear technetium(V) and (VII) complexes with 3,6-bis(2 prime -pyridyl)-1,2,4,5-tetrazine

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Journal of Coordination Chemistry; (United States)

DOI:https://doi.org/10.1080/00958979009408205· OSTI ID:7305475

Du Preez, J G.H.; Gerber, T I.A.; Gibson, M L ^[1]

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1. Univ. of Port Elizabeth (South Africa)

Novel binuclear complexes of heptavalent and pentavalent technetium with the bridging ligand 3,6-bis(2{prime}-pyridyl)-1,2,4,5-tetrazine (bptz) have been prepared and characterized by analysis and optical and vibrational spectroscopy. The heptavalent complexes with the formulation ({mu}-bptz)(TcO{sub 3}X){sub 2} (X = Cl, OCH{sub 3}, OCH{sub 2}CH{sub 3}) were synthesized from pertechnetate and the ligand bptz{center dot}2HCl in the appropriate alcohol (X = OMe, OEt) or from pertechnetate and bptz in ethanolic aqueous HCl (for X = Cl). Binuclear complexes of technetium(V) with the formulation ({mu}-bptz)(TcOCl{sub 2}X){sub 2} (X = OEt, Cl) were prepared in ethanol from TcOCl{sub 4}{sup {minus}} and bptz in the absence (X = OEt) and presence (X = Cl) of ethanolic aqueous HCl. The mononuclear technetium(V) complex (TcO{sub 2}(bptz){sub 2})Cl has also been isolated under certain experimental conditions. Mononuclear complexes of the ligand 4-phenyl-3,6-bis(2{prime}-pyridyl)pyridazine (pppz) with formulae TcO{sub 3}(pppz)Cl and TcO(pppz)Cl{sub 3} were prepared from pertechnetate and TcOCl{sub 4}{sup {minus}}, respectively, with pppz in ethanolic aqueous hydrochloric acid solution.

• OSTI ID: 7305475
• Journal Information: Journal of Coordination Chemistry; (United States), Journal Name: Journal of Coordination Chemistry; (United States) Vol. 22:1; ISSN 0095-8972; ISSN JCCMB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
AZINES
CHEMICAL PREPARATION
COMPLEXES
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
INFRARED SPECTRA
LIGANDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
SPECTRA
SPECTROSCOPY
SYNTHESIS
TECHNETIUM COMPLEXES
TRANSITION ELEMENT COMPLEXES