Synthesis, Structural Characterization, and Density Functional Study of Homo‐ and Heteropolyhalide Complexes of Cu
<sup>II</sup>
with Dien and Dpta Ligands: Crystal Structure of [Bis(3‐aminopropyl)amine](bromo)(diiodobromo)copper(
<scp>II</scp>
)
作者:Aikaterini T. Chaviara、Athanasios C. Tsipis、Philip J. Cox、Christos A. Bolos
DOI:10.1002/ejic.200500146
日期:2005.9
calculations at the B3LYP level of theory provided a satisfactory description of the structures of all complexes, while the distorted square-pyramidal structure of a representative complex, namely [CuBr(dpta)(BrI2)], was further substantiated by a single-crystal X-ray diffraction study. In the square-pyramidal structure of [CuBr(dpta)(BrI2)], the basal plane of the pyramid involves three Cu–N contacts
多卤化物单核 [CuX(L)(XY2)] 和双核 [CuX(L)}2(μ-XY2X)] CuII 配合物 [L = 二亚乙基三胺 (dien) 或二亚丙基三胺 (dpta); X = Cl, Br 和 Y = Br, I] 是通过用 Br2 或 I2 以 1:1 和 2:1 的摩尔比处理前体 [CuX2(L)] 络合物而获得的。新的同-和杂多卤化物 CuII 配合物,无论是单核还是双核,被预测为五坐标 CuII 配合物,表现出扭曲的方形锥体配置。B3LYP 理论水平的 DFT 计算提供了对所有配合物结构的令人满意的描述,而代表性配合物的扭曲方形锥体结构,即 [CuBr(dpta)(BrI2)],通过单晶进一步证实X 射线衍射研究。在[CuBr(dpta)(BrI2)]的方形锥体结构中,金字塔的基面涉及来自 dpta 和 Br(1) 原子的三个 Cu-N 接触 [1.990(7)、2.065(7)