Noschang Cabral B, Kirsten L, Hagenbach A, Piquini P C, Patzschke M, Lang E Schulz, Abram U
Universidade Federal de Santa Maria, Department of Chemistry, Laboratory of Inorganic Materials, 97105-900 Santa Maria, RS, Brazil.
Dalton Trans. 2017 Jul 18;46(28):9280-9286. doi: 10.1039/c7dt02041d.
Reactions of (NBu)[TcOCl] or [TcCl(PPh)(CHCN)] with in situ-prepared lithium arylselenolates and -tellurolates give (NBu)[TcO(ArE)] (E = Se, Te; Ar = phenyl) and [Tc(ArE)(PPh)(CHCN)] (E = Se, Te; Ar = phenyl, 2,6-Mephenyl, mesityl) complexes, respectively. The products contain square-pyramidal (Tc compounds) and trigonal bipyramidal (Tc complexes) coordinated technetium atoms. Density functional theory calculations indicate that the Tc-chalcogen bonds in the Tc compounds have a greater bond order than those in the Tc compounds.
（NBu）[TcOCl] 或 [TcCl(PPh)(CHCN)] 与原位制备的芳基硒醇锂盐和碲醇锂盐反应，分别生成 （NBu）[TcO(ArE)] （E = Se，Te；Ar = 苯基）和 [Tc(ArE)(PPh)(CHCN)] （E = Se，Te；Ar = 苯基、2,6-二甲基苯基、均三甲苯基）配合物。产物含有四方锥型（Tc 化合物）和三角双锥型（Tc 配合物）配位的锝原子。密度泛函理论计算表明，Tc 化合物中的 Tc-硫族元素键比 Tc 配合物中的键级更高。
