对苯二甲酸根桥联的双铁(Ⅲ)配合物的穆斯堡尔研究

Mo¨ssbauer Study of Terephthalato Bridged Iron(Ⅲ) Binuclear Complexes

本文以对苯二甲 酸根（ Ｔ Ｐ Ｈ Ａ）为桥合成 了三个双核铁（Ⅲ）的 配合物。经元素分 析、红外光谱、穆 斯堡尔 谱等方 法推定 配合 物具 有对 苯二 甲酸根 桥联 结构， Ｆｅ（Ⅲ） 的配位 环境 为八 面体 构型。配合物 的低 温（７８ Ｋ）穆斯堡尔谱显示两组不同的双 峰，说明 Ｆｅ（Ⅲ）具有自旋交叉现象（ｓ＝ １／２和 ｓ＝ ３／２）。

Three terephthalato(TPHA) bridged iron(Ⅲ) binuclear complexes had been synthesized.The complexes were characterized by elemental analysis,IR spectra.The results suggested that the TPHA was a bridge which connected two ferram atoms.Ferram atom was in a octahedron configuration. Mo¨ssbauer spectra of complexes(at 78k) show two different doublets,which suggest that Fe(Ⅲ) had a spin\|cross( s =1/2 and s =3/2) phenomenon.