摘要
对两个新颖的碘化亚铜配合物CuI[2-(Dpp)bp]_2(配合物1,2-(Dpp)bp=二(二苯基膦)联苯)和Cu_2(μ-I)_2[TPP(o-OCH_3)]_2?CH_3CN (配合物2,TPP(o-OCH_3)=三(3-甲氧基苯基)膦)的合成、晶体结构和性质进行了研究。配合物1和配合物2分别表现为单核、双核碘化亚铜配合物的结构类型。在配合物1和2的晶体结构中,亚铜原子都表现为不同寻常的近乎平面的三角形配位构型,推测其原因可能是由于膦配体较大的空间位阻效应所致。两配合物都表现了良好的热稳定性,双核配合物2的热稳定性优于单核配合物1。配合物1和2的紫外-可见吸收主要来自于膦配体的π-π~*电子吸收跃迁,配合物1和2的能隙值分别为3.58、3.21 eV,说明配合物1和2均属于半导体。
The syntheses, structures and properties of two new cuprous iodide complexes, CuI[2-(Dpp)bp]_2(2-(Dpp)bp=2-(diphenylphosphino)-biphenyl) and Cu_2(μ-I)2[TPP(o-OCH_3)]_2·CH_3CN(TPP(o-OCH_3)= tri(3-methoxyphenyl)phosphine) were studied. The complex 1(CuI[2-(Dpp)bp]_2) andcomplex 2 showed structural styles of mononuclear and dinuclear cuprous iodide, respectively. In the crystal structures of complexes 1 and 2, cuprous atoms showed unusual near-planar triangle coordination geometry. This may be because of large steric-hinerance effect of phosphine ligand. The two complexes presented good thermal stability, and the thermal stability of dinuclear complex 2 was better than that of mononuclear complex 1. The UV-Vis absorption of the complexes 1 and 2 mainly came from the π-π~* electron transfer of the phosphine ligands. The band gaps of complexes 1 and 2 were 3.58 eV and 3.21 eV, respectively, indicating that the complexes belong to semiconductors.
引文
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