Synthesis and structure of copper(II) 3-(3′,5′-Di-tert-butyl-4′-hydroxybenzyl)acetylacetonate
作者:S. N. Pod’‘yachev、S. V. Bukharov、I. A. Litvinov、V. I. Morozov、A. T. Gubaidullin、G. N. Nugumanova、N. A. Mukmeneva
DOI:10.1007/s11176-005-0079-3
日期:2004.11
Copper(II) 3-(3′,5′-di-tert-butyl-4′-hydroxybenzyl)acetylacetonate was prepared, and its molecular and crystal structure were determined by single crystal X-ray diffraction. There are two crystallographically independent molecules of the complex in the crystal. In the first molecule, the square planar coordination of Cu(II) is virtually ideal, and in the second molecule it is somewhat distorted. On the whole, the conformations of the independent molecules are similar. The ESR spectrum of the polycrystalline complex suggests magnetic coupling of the Cu atoms and magnetic ordering. In solution in coordination-inert toluene, heating increases the contribution of tetrahedral distortions. In ethanol, the solvent molecule additionally coordinates at the axial positions of the complex.
制备了 3-(3′,5′-二叔丁基-4′-羟基苄基)乙酰丙酮酸铜(II),并通过单晶 X 射线衍射测定了其分子和晶体结构。晶体中有两个晶体学上独立的复合物分子。在第一个分子中,Cu(II) 的方形平面配位几乎是理想的,而在第二个分子中,Cu(II) 的方形平面配位有些扭曲。总体而言,独立分子的构象相似。多晶复合物的 ESR 光谱表明铜原子之间存在磁耦合和磁有序性。在配位惰性的甲苯溶液中,加热会增加四面体畸变。在乙醇中,溶剂分子会在复合物的轴向位置进行额外配位。