Technetium complexes with thioether ligands—III. Synthesis and structural characterization of cationic nitridotechnetium(V) complexes with thiacrown ethers
作者:Hans-Juergen Pietzsch、Hartmut Spies、Peter Liebnitz、Guenter Reck
DOI:10.1016/s0277-5387(00)80052-2
日期:1993.12
Abstract The first representative of a new class of TcN complexes with thiacrown ethers have been prepared by ligand exchange reaction of NBu4[TcNCl4] with 1,4,8,11-tetrathiacyclotetradecane (14S4), 1,5,9,13-tetrathiacyclohexadecane (16S4), 1,5,9,13-tetrathiacyclohexadecane-3,11-diole (16S4-(OH)2) and 1,4,7,10,13,16-hexathiacyclooctadecane (18S6). The crystal structure of [TcNCl(14S4)]TcNCl41) consists
摘要通过NBu4 [TcNCl4]与1,4,8,11-四硫代环十四烷(14S4),1,5,9,13-四硫代环十六烷( 16S4),1,5,9,13-四硫代环十六烷-3,11-二醇(16S4-(OH)2)和1,4,7,10,13,16-六硫代环十八烷(18S6)。[TcNCl(14S4)] TcNCl41)的晶体结构由成对的独立阳离子与处于氧化态+ 5的金属和六价TcNCl4-阴离子组成。在络合阳离子中,金属在相当扭曲的八面体几何形状中是六配位的,直接与赤道面大环配体上的四个硫原子键合,在轴向位置上与氮原子和一个氯原子键合。亚硝基配体的强反式影响导致TcCl键距极大延长至2.718A。[TcNCl(18S6)] TcNCl4(3)的八面体分子结构与1相当,但只有四个硫原子硫杂环丁烷醚的大部分形成赤道平面,两个硫原子保持不配位,并且亚硝基和Cl-配体在轴向位置。[TcNCl(16S4-(OH)2)]