89172-46-3Relevant academic research and scientific papers
Chemistry and structure of hexakis(thiourea-S)technetium(III) trichloride tetrahydrate, [Tc(SC(NH2)2)6]Cl3.4H2O
Abrams,Davison,Faggiani,Jones,Lock
, p. 3284 - 3288 (2008/10/08)
The preparation and characterization of hexakis(thiourea-S)technetium(III) trichloride tetrahydrate, [Tc(SC(N-H2)2)6]Cl3.4H2O (A), is described. Crystals of A are monoclinic, C2/c, with a = 11.876 (2) ?, b = 12.048 (2) ?, c = 19.662 (3) ?, and β = 95.32 (1)°, and have four formula units in the unit cell. The structure was determined by standard methods and refined to R1 = 0.0391, R2 = 0.0452 on the basis of 1753 independent reflections. Data were measured with use of Mo Ka radiation and a Syntex P21 diffractometer. The cation is roughly octahedrally coordinated by the six sulfur atoms of the thiourea groups. The Tc-S bonds (2.431 (1), 2.412 (1), 2.440 (1) ?) are significantly longer than Tc(V)-S lengths reported previously, but bond lengths within the thiourea groups are normal. The structure is held together by an extensive hydrogen-bonding network. Chemical reactions of A are described, as well as the preparation and characterization of [Tc(SC(NH2)2)6](BF4)3, [TcCl2(diphos)2]Cl·2H2O, [Tc(CNC(CH3)3)6]PF6, and [Tc(P(OCH3)3)6]PF6 from A.
