Formation of (C5Me5)2U(EPh)Me, (C5Me5)2U(EPh)2, and (C5Me5)2U(η2-TeC6H4) from (C5Me5)2UMe2 and PhEEPh (E = S, Se, Te)

(C5Me5)2UMe2, 1, reacts with 1 and 2 equiv of PhEEPh (E = S, Se) to form (C5Me5)2UMe(EPh) (E = S, 2; Se, 3) and (C5Me5)2U(EPh)2 (E = S, 4; Se, 5), respectively, with concomitant formation of MeEPh. Complexes 2, 3, and 5 form at ambient temperature, but the synthesis of 4 required heating to 65 °C. Addition of 2 equiv of PhTeTePh to 1 equiv of (C5Me5)2UMe2 generated the tellurium analogue of 4 and 5, namely, (C5Me5)2U(TePh)2, 6, but when 1 was reacted with 1 equiv of PhTeTePh, C−H activation of the aryl ring occurred to form (C5Me5)2U(η2-TeC6H4), 7, along with MeTePh and CH4.

配合物(C₅Me₅)₂UMe₂（记为1）与1当量及2当量的PhEEPh（E=S、Se）分别发生反应，生成(C₅Me₅)₂UMe(EPh)（E=S时为2，E=Se时为3）与(C₅Me₅)₂U(EPh)₂（E=S时为4，E=Se时为5），同时伴随生成MeEPh。配合物2、3和5可在室温下合成，但配合物4的制备需加热至65℃。向1当量的(C₅Me₅)₂UMe₂中加入2当量的二苯基二碲(PhTeTePh)，可得到对应4和5的碲类似物，即(C₅Me₅)₂U(TePh)₂（记为6）；但当配合物1与1当量的二苯基二碲反应时，芳环发生碳氢键活化，生成(C₅Me₅)₂U(η²-TeC₆H₄)（记为7），同时伴随生成MeTePh与甲烷(CH₄)。