Synthesis of 2,6-Bis(bis(2-(methylthio)phenyl)phosphino)-4-methylphenol, a Novel Polydentate Ligand Containing Two Tripodal [S,S,P,O] Coordination Pockets; Crystal Structure of the Dimeric Thallium(I) Complex
作者:Aldona Beganskiene、Natcharee Kongprakaiwoot、Rudy L. Luck、Eugenijus Urnezius
DOI:10.1002/zaac.200600119
日期:2006.8
topological analog of binucleading ligands built on a 2,6-diaminophenol core, where two tripodal N- or O-ligating compartments are flanking the phenolate functionality. A distinguishing feature of 2 is the “soft” donor environment of the potentially [S,S,P]-ligating pockets flanking the phenolic OH group. Reaction of 2 with TlOEt lead to the formation of the dimeric thallium(I) phenoxide (3), which was characterized
双(2-(甲硫基)苯基)氯膦(5a)(2 当量)与 O-保护的 2,6-二硫基-4-甲基苯酚反应,随后进行酸性处理,分离出 2,6-双 (双(2-(甲硫基)苯基)膦基)-4-甲基苯酚(2)。如果使用空间体积更大的双(2-(叔丁硫基)苯基)氯膦(5b)代替 5a,则类似的反应不会进行。化合物 2 是构建在 2,6-二氨基苯酚核心上的双核配体的拓扑类似物,其中两个三足 N 或 O 连接隔室位于酚盐官能团的两侧。2 的一个显着特征是酚羟基侧翼的潜在 [S, S, P] 连接口袋的“软”供体环境。2 与 TlOEt 的反应导致形成二聚铊 (I) phenoxide (3),其特征在于单晶 X 射线衍射研究。除了μ-苯氧基连接之外,在固态下,每个铊原子还与来自相反配体的两个磷原子相互作用。相互作用并不等效,两个 TlI-P 距离相差约 0.3A。固态中不存在显着的 Tl···S 相互作用。室温 31P