作者:Lars Hirneise、Dennis A. Buschmann、Cäcilia Maichle-Mössmer、Reiner Anwander
DOI:10.1021/acs.organomet.2c00029
日期:2022.4.25
The first structurally characterized fluorenyl (Flu) complexes of cerium are reported, bearing one, two, and three fluorenyl ligands. The reaction of CeX3(THF)x (X = Cl and I) with KFlu led to the half-sandwich complexes FluCeX2(THF)3. The chloride derivative was utilized in salt metathesis reactions, affording complexes FluCeR2(THF)x with R = OtBu, OSiMe3, OC6H3iPr2-2,6, Me2Pz, and Cp (x = 1 or 2;
报道了第一个结构特征的芴基 (Flu) 铈配合物,带有一个、两个和三个芴基配体。CeX 3 (THF) x (X = Cl 和 I) 与 KFlu 的反应导致形成半夹心复合物 FluCeX 2 (THF) 3。氯化物衍生物用于盐复分解反应,得到配合物 FluCeR 2 (THF) x,其中 R = O t Bu、OSiMe 3、OC 6 H 3 i Pr 2 -2,6、Me 2 Pz 和 Cp ( x = 1或 2;Me 2 Pz = 3,5-二甲基吡唑,Cp = C 5 H5)。单(芴基)配合物 FluCeR 2 (THF) x在环境温度下易于发生配体再分布,导致各自的夹心配合物 Flu 2 CeR(THF)。使用 K(2,10- t Bu 2 Flu) (KFlu t Bu ) 得到三(芴基) 络合物 Flu t Bu 3 Ce(THF) ,展示了两个 η 5 - 和一个 η 1结合的芴基配体。用卤化氧化剂如