Late to the Party: Synthesis and Characterization of Tellurium and Selenium Half-Sandwich Complexes
作者:Jerod M. Kieser、Leighton O. Jones、Madeleine C. Uible、Matthias Zeller、George C. Schatz、Suzanne C. Bart
DOI:10.1021/acs.organomet.1c00546
日期:2021.12.27
We report the synthesis and characterization of the first series of tellurium and selenium complexes featuring an η5-cyclopentadienyl ligand. Reaction of Ph3TeX (X = Cl, S2CNEt2) with MCpR (M = Li, K; R = H, Me4, Me5) results in high yields of [Cp][TePh3] (1), [CpMe4][TePh3] (2), and [Cp*][TePh3] (3), respectively. Similarly, reaction of Ph3SeCl with LiCp and KCp* furnishes [Cp][SePh3] (4) and [Cp*][SePh3]
我们报告了具有 η 5 -环戊二烯基配体的第一系列碲和硒配合物的合成和表征。Ph 3 TeX (X = Cl, S 2 CNEt 2 ) 与 MCp R (M = Li, K; R = H, Me 4 , Me 5 ) 的反应导致 [Cp][TePh 3 ] ( 1 ) 的高产率、[Cp Me4 ][TePh 3 ] ( 2 ) 和 [Cp*][TePh 3 ] ( 3 )。类似地,Ph 3 SeCl 与 LiCp 和 KCp* 的反应提供 [Cp][SePh 3 ] ( 4) 和 [Cp*][SePh 3 ] ( 5 )。每个都通过 X 射线晶体学表征,揭示了相似的 η 5配位,而理想化的半夹心几何结构几乎没有畸变,推测来自碲和硒上剩余的孤对电子。Te-质心距离相对较长(1 : 2.770(3)、2 : 2.746(1) 和3 : 2.733(1) Å),表明主要是离子相互作用。尽管其原子半径较小,但Se-质心距离