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Technetium I

Evidence for rc(-l) in complex compounds appears in the synthesis of the carbonyl anion 1Tc(CO)5], the carbonyl hydride [HTc(CO)s]°, and the heteronuclcar carbonyl anion TcFe2(CO)i2] . Their existence was suggested by a comparison of their TR absorption bands with those of the corresponding compounds of manganese and rhenium, however, no structural determinations or magnetic measurements were reported. [Pg.352]

When freshly sublimed [Tc2(CO)io in dry THE was reduced with 1 % Na-amal-gam at 0 °C, a reddish coloration of THE with evolution of CO was observed. Ehc IR spectra of THE solutions showed two strong bands at 1865 and 1911 cm. A comparison of these bands with those from solutions of [Mn(CO)5] indicated the presence of [Tc(CO)5] . The action of Na-amalgam on Re2(CO)ioj also led to [Rc(CO)j], with strong IR absorptions in THE at 1864 and 1910 cm [622]. [Pg.352]

Complex Slructurc Tc-I, distance [A] Magnetic property References [Pg.353]

1152) 11. Spies. Pictzsch. and I. Hoffmann. Inorg. Chim. Acta 161.17 19 (1989) [Pg.357]

Duatti, A. Marchi, S.A. Luna, G. Bandoli. U. Mazzi, and F. Tisato, J. Chem. Soc. Dallon Trans. 867-871 (1987) [Pg.363]

This is the rarest oxidation state for technetium. The IR spectrum of a solution prepared by the addition of Na amalgam to [Tc2(CO)10] in THF showed two v(CO) bands at 1911 and 1865 cm-1, which were assigned to the carbonyl anion [Tc(CO)5] by comparison with the spectra of [M(CO)5] (M = Mn, Re). Solutions of Na[Tc(CO)5] in THF undergo the expected reactions, including the formation of volatile [HTc(CO)5] on treatment with H3P04 (45). The [Tc(CO)5]- anion has been used as a nucleophile for the preparation of mixed-metal decacar-bonyls (46) by reactions such as [Pg.5]


A series of technetium(I) J -diketonates have been prepared by refluxing 32 in the corresponding neat / -diketone. Due to the instability of the CO ligands trans to a ff-donor ligand, one of the COs can be substituted by an additional amine (L), forming compounds of the composition [Tc(OaO)(CO)3L] (61) [74,75],... [Pg.174]

Tc(IV) [or Tc(VII)] and Tc. An analogous tendency was observed for these clusters in aqueous solutions [11,80,87]. Polynuclear technetium clusters decompose with the formation of metallic technetium, i.e. the system of M-M bonds in this case appears to be more stable than the bonding of technetium with ligands. [Pg.232]

Isomer shift data, Fe,S4 clusters, 38 20, 50 Isomorphic substitution, 39 179, 186 p-Isonicotinamide complexes, osmium, 37 307 p-lsonicotinamidepoly(proline) complexes, osmium, 37 307 Isonitrile complexes osmium, 37 245 technetium(I), 41 13-14 technetium(II), 41 31 technetium(IIl), 41 45 Isopolymolybdates, 19 239ff 19 265-280 crystallization from aqueous solution, 19 265-269... [Pg.156]

Hexadienes, cyclization-hydrosilylation, 11, 383-385 Hexaethyldigermane, synthesis, 3, 787 Hexafluoroarseniate salts, phase transition behavior, 12, 581 Hexakis(biphenyl)diplumbane, preparation, 3, 887 Hexakis(isocyanide)technetium(I) compound, synthesis,... [Pg.118]


See other pages where Technetium I is mentioned: [Pg.234]    [Pg.170]    [Pg.294]    [Pg.215]    [Pg.13]    [Pg.38]    [Pg.68]    [Pg.70]    [Pg.207]    [Pg.235]    [Pg.235]    [Pg.879]    [Pg.99]    [Pg.57]    [Pg.69]    [Pg.165]    [Pg.169]    [Pg.1]    [Pg.5]    [Pg.1]    [Pg.5]    [Pg.194]   


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Technetium

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