A Monomeric Thallium(I) Amide in the Solid State: Synthesis and Structure of TlN(Me)Ar<sup>Mes</sup><sub><sup>2</sup></sub> (Ar<sup>Mes</sup><sub><sup>2</sup></sub> = C<sub>6</sub>H<sub>3</sub>-2,6-Mes<sub>2</sub>)
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Reaction of TlCl and [LiN(Me)ArMes2]2 [ArMes2 = C6H3-2,6-(C6H2-2,4,6-Me3)2] in Et2O generated the thallium amide, TlN(Me)ArMes2 (1). X-ray data showed that it has a monomeric structure with an average Tl−N distance of 2.364(3) Å. There was also a Tl−arene approach [Tl−centroid = 3.026(2) Å (avg)] to a flanking mesityl ring from the terphenyl substituent. DFT calculations showed that this interaction is weak and supported essentially one coordination for thallium. The electronic spectrum of 1 is hypsochromically shifted in comparison to the monomeric TlArTrip2 (Trip = C6H2-2,4,6-Pri3).
创建时间：
2016-05-06
