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合成了芳香基硼氨配合物MesNHBMes_2及其As的衍生物AsCl_2NMesBMes_2(Mes=Me_3C_6H_2-),并通过X线衍射进行了结构测定。结果表明,带有配体的N-B中心呈平面形,平面间扭曲的角度一般小于10°,B-N原子之间多重键的性质无改变。用M_0K_a(λ=0.0071069nm)在130K低温下X线衍射所得的晶体数据为:1.MesNHBMes_2,C_(27)H_(34)BN,a=0.8200(1)nm,b=1.0370(3)nm,C=1.5134(3)nm,α=109.38(2)°,β=80.96(2)°,γ=108.71(2)°,三斜晶体,空间群p(?),R=0.063。2.AsCl_2NMesBMes_2,C_(27)H_(33)AsBCl_2N,a=2.2681(3)nm,b=8.3510(9)nm,C=2.7961(3)nm,β=98.80(1)°,单斜晶体,空间群P2_(1/a)。
The arylboron ammonia complex MesNHBMes_2 and its As derivative AsCl_2NMesBMes_2 (Mes = Me_3C_6H_2-) were synthesized and the structures were determined by X-ray diffraction. The results show that the center of N-B with ligand is planar, and the twist between planes is generally less than 10 °. There is no change in the nature of multiple bonds between B-N atoms. The crystal data obtained by X-ray diffraction at 130K with M_0K_a (λ = 0.0071069nm) are as follows: 1.MesNHBMes_2, C_ (27) H_ (34) BN, a = 0.8200 (1) nm and b = 1.0370 (3) nm , T = 1.83 (3) nm, α = 109.38 (2) °, β = 80.96 (2) ° and γ = 108.71 (2) °. AsCl_2NMesBMes_2, C_ (27) H_ (33) AsBCl_2N, a = 2.2681 (3) nm, b = 8.3510 (9) nm, C = 2.7961 (3) nm, β = 98.80 P2_ (1 / a).