钆-邻氟苯甲酸-邻菲咯啉配合物的合成、晶体结构

由于有机羧酸化合物具有多种配位方式,以此为配体的稀土羧酸配合物具有多种多样的晶体结构。这类配合物有单核分子、双核分子和高聚物,可形成1D、2D、3D等多种结构。而且由于这类配合物在萃取分离、催化和发光材料等方面的潜在应用一直受到学者们的广泛研究。稀土与苯甲酸及其衍生物和1,10-邻菲咯啉的混合配体配合物已有很多报道[1￣6]。文献[1,2]报道了在同一个配合物的结构单元中存在两个晶体学不等同的双核分子,是由于羧基桥联方式不同而导致的。其中一个分子的两个中心离子通过4个苯甲酸的羧基桥联,另一个只有2个羧基桥联。我们合成了…

Synthesis and Crystal Structure of a Gadolinium 2-Fluorobenzoate Complex with 1,10-Phenanthroline

This paper reports a novel rare interesting crystal structures of gadolinium 2-fluorobenzoato (2-FBA) complex containing 1,10-phenanthroline (phen). The two non-equivalent binuclear molecules, [Gd(2-FBA)₃(phen)(CH₃CH₂OH)]₂ and [Gd(2-FBA)₃(phen)]₂, exist in the asymmetric unit of the crystal. The molecular structure of [Gd(2-FBA)₃(phen)(CH₃CH₂OH)]₂ shows that the Gd³⁺ ion is eight-coordinated by five O atoms from five 2-FBA groups and one O atom from one ethanol molecule and two N atoms from phen molecule. 2-FBA groups adopt monodentate and bridging two coordination modes. The molecular structure of [Gd(2-FBA)₃(phen)]₂ shows that the Gd³⁺ ion is coordinated by nine atoms, seven O atoms from five 2-FBA groups and two N atoms from phen molecule. The 2-FBA groups link Gd³⁺ ion in chelating, bridging and chelating-bridging three coordination modes. CCDC: 273106.