Kinetic and structural studies on the oxotetracyanotechnetate(V) core: Protonation and ligation of dioxotetracyanotechnetate(V) ions and crystal structure of 2,2 prime -bipyridinium trans-oxothiocyanatotetracyanotechnetate(V)

Journal Article · Wed Mar 18 04:00:00 EST 1992 · Inorganic Chemistry; (United States)

DOI:https://doi.org/10.1021/ic00032a030· OSTI ID:7011446

Roodt, A; Leipoldt, J G ^[1]; Deutsch, E A ^[2]; Sullivan, J C ^[3]

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1. Univ. of the Orange Free State, Bloemfontein (South Africa)
2. Univ. of Cincinnati, OH (United States)
3. Argonne National Lab., IL (United States)

The tetracyanodioxotechnetate(V) ion undergoes protonation reactions in acidic aqueous solutions, forming the (TcO(OH)(CN){sub 4}){sup 2{minus}} (1) and (TcO(OH{sub 2})(CN){sub 4}){sup {minus}} (2) complexes. A dimeric species, (Tc{sub 2}O{sub 3}(CN){sub 8}){sup 4{minus}} (3), is rapidly formed from the hydroxo oxo complex, and it is therefore impossible to isolate complex 1. The coordinated water of (TcO(H{sub 2}O)(CN){sub 4}){sup {minus}} can be displaced by monodentate ligands such as thiocyanate. The reaction with thiocyanate ions gives (TcO(NCS)(CN){sub 4}){sup 2{minus}} (4), the composition and structure of which was confirmed by means of an X-ray crystal structure determination. 2,2{prime}-Bipyridinium oxothiocyanatotetracyanotechnetate(V) (C{sub 25}H{sub 18}N{sub 9}OSTc) crystallizes in the monoclinic space group. A final R value of 6.4% resulted from refinement of 1868 observed reflections.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7011446
• Journal Information: Inorganic Chemistry; (United States), Journal Name: Inorganic Chemistry; (United States) Vol. 31:6; ISSN 0020-1669; ISSN INOCA
• Country of Publication: United States
• Language: English

Related Subjects

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62 RADIOLOGY AND NUCLEAR MEDICINE
ABSORPTION SPECTRA
AQUEOUS SOLUTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BOND ANGLE
BOND LENGTHS
CHEMICAL REACTION KINETICS
COHERENT SCATTERING
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DIMENSIONS
DIMERS
DISPERSIONS
DISSOCIATION
DRUGS
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KINETICS
LABELLED COMPOUNDS
LENGTH
LIGANDS
MIXTURES
MONOCLINIC LATTICES
NUCLEI
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PERTECHNETATES
RADIOISOTOPES
RADIOPHARMACEUTICALS
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
SCATTERING
SOLUTIONS
SPECTRA
TECHNETIUM 99
TECHNETIUM COMPLEXES
TECHNETIUM COMPOUNDS
TECHNETIUM ISOTOPES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
YEARS LIVING RADIOI