Formation of (C<sub>5</sub>Me<sub>5</sub>)<sub>2</sub>U(EPh)Me, (C<sub>5</sub>Me<sub>5</sub>)<sub>2</sub>U(EPh)<sub>2</sub>, and (C<sub>5</sub>Me<sub>5</sub>)<sub>2</sub>U(<i>η</i><sup>2</sup>-TeC<sub>6</sub>H<sub>4</sub>) from (C<sub>5</sub>Me<sub>5</sub>)<sub>2</sub>UMe<sub>2</sub> and PhEEPh (E
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(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.
创建时间：
2007-08-13
