Stabilization of propene molybdenum and tungsten half–sandwich complexes by intramolecular coordination of a thioether function
作者:Lukáš Hanzl、Jaromír Vinklárek、Libor Dostál、Ivana Císařová、Miroslava Litecká、Jan Honzíček
DOI:10.1039/d3ra03383j
日期:——
characterized by NMR spectroscopy. The molybdenum compounds are stable at low temperature and the propene ligand can easily be exchanged by thioethers or acetonitrile. Several representatives of the reaction products were characterized by X-ray structure analysis. The stabilization effect in tungsten complexes [η5:κS-C5H4(CH2)2SR}W(CO)2(η2-C2H3Me)][BF4] (R = Et, Ph) was unusually high. The compounds are
本研究报告了通式[η 5 :κ S -C 5 H 4 (CH 2 ) 2 SR}M(CO) 2 (η 2 -C 2 H)丙烯配合物中分子内配位硫醚功能的稳定作用3 Me)][BF 4 ] (M = Mo、W;R = Et、Ph)。它们是通过烯丙基类似物[η 5 -C 5 H 4 (CH 2 ) 2 SR}M(CO) 2 (η 3 -C 3 H 5 )]在非配位溶剂中被四氟硼酸质子化而形成。与具有未取代的 Cp 配体的类似物相比,这些丙烯络合物可以纯品形式分离并通过 NMR 光谱进行表征。钼化合物在低温下稳定,丙烯配体很容易被硫醚或乙腈交换。通过 X 射线结构分析对几种代表性的反应产物进行了表征。 钨配合物的稳定化作用 [η 5 :κ S -C 5 H 4 (CH 2 ) 2 SR}W(CO) 2 (η 2 -C 2 H 3 Me)][BF 4 ] (R = Et, Ph) 异常高。该