当前位置: X-MOL 学术Eur. J. Inorg. Chem. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Synthesis, Crystal Structure, and DFT Study of Two New Dinuclear Copper(I) Complexes Bearing Ar‐BIAN Ligands Functionalized with NO2 Groups
European Journal of Inorganic Chemistry ( IF 2.2 ) Pub Date : 2020-06-27 , DOI: 10.1002/ejic.202000423
Mani Outis 1 , Vitor Rosa 1 , César A. T. Laia 1 , João Carlos Lima 1 , Sónia Barroso 2 , Ana Luísa Carvalho 2 , Maria José Calhorda 3 , Teresa Avilés 1
Affiliation  

Two new bis(aryl‐imino)‐acenaphthene, Ar‐BIAN (Ar = 2,4,6‐trimethylphenyl = mes) ligands, bearing the NO2 group in the naphthalene moiety of the iminoacenaphthene at para‐ (5‐NO2) and meta‐ (4‐NO2) position, of formulations 1,2‐bis(mes‐imino)‐5‐nitroacenaphthene, 1 , and 1,2‐bis(mes‐imino)‐4‐nitroacenaphthene, 2 , were synthesized. Their respective dinuclear iodide bridged copper(I) complexes [Cu2(µ‐I)2(mes‐BIAN‐5‐NO2)2], 3 and [Cu2(µ‐I)2(mes‐BIAN‐4‐NO2)2], 4 , were obtained in good yields by treatment with an equimolar amount of CuI. All compounds were characterized by elemental analysis, single‐crystal X‐ray diffraction, 1H‐NMR, 13C‐NMR, FTIR, UV/Vis spectroscopy. DFT calculations helped to understand the different molecular structure observed in the crystals of 3 and 4 and the determining role of packing forces. TDDFT revealed that the absorption bands in the visible were essentially MLCT (Metal to Ligand Charge Transfer), with some n→π* character (intra ligand). The shift to the red compared to the spectrum of the Cu(I) complex analogue without the NO2 group, [Cu2(µ‐I)2](mes‐BIAN)2], 6 , could be explained by the stabilization of the ligand unoccupied π* orbitals in the presence of NO2.

中文翻译:

两种带有被NO2基官能化的Ar-BIAN配体的新型双核铜(I)配合物的合成,晶体结构和DFT研究

两个新的双(芳基-亚氨基)-ena,Ar-BIAN(Ar = 2,4,6-三甲基苯基= mes)配体,在亚氨基ac的萘部分的对位(5-NO 2)带有NO 2基团。和间位(4-NO 2)的位置,配制剂的1,2-双(MES亚氨基)-5- nitroacenaphthene,1,和1,2-双(MES-亚氨基)-4-nitroacenaphthene,2,合成。它们各自的双核碘桥联铜(I)络合物[Cu 2(µ-I)2(mes-BIAN-5-NO 22 ],3和[Cu 2(µ-I)2(mes-BIAN-4-mes )NO 2通过用等摩尔量的CuI处理以良好的产率获得)2 ] 4。所有化合物均通过元素分析,单晶X射线衍射,1 H-NMR,13 C-NMR,FTIR,UV / Vis光谱进行了表征。DFT计算有助于理解在34晶体中观察到的不同分子结构以及堆积力的确定作用。TDDFT显示可见光中的吸收带基本上是MLCT(金属到配体的电荷转移),具有一些n→π*特征(配体内)。与没有NO 2基团[Cu 2]的Cu(I)配合物类似物的光谱相比,向红色的转变(µI)2 ](mes-BIAN)2 ],6可以通过在NO 2存在下配体未占据的π*轨道的稳定来解释。
更新日期:2020-08-10
down
wechat
bug