COORDINATION OF FE3+ IN CONCENTRATED AQUEOUS-SOLUTIONS WITH CHLORIDE LIGANDS
COORDINATION OF FE3+ IN CONCENTRATED AQUEOUS-SOLUTIONS WITH CHLORIDE LIGANDS
复制标题
DOI：
10.1021/ic50208a044
复制
发表时间：
1980-01-01
影响因子：
4.6
通讯作者：
STEELE, ML
中科院分区：
文献类型：
--
作者：
WERTZ, DL;STEELE, ML
X 射线衍射测量表明，在溶液制备后不久，FeCl3-6H20 (ICHH) 和 FeCl3 (AIC) 浓水溶液中形成的溶质种类不同，表明一组（或两组）水溶液中溶质种类的缓慢平衡。八面体配位的六水合铁 (III) 和离子对 Fe-Cl 相互作用解释了 ICHH 溶液中发现的溶质种类。平均Fe-0距离为2.04±0.02μ，离子对Fe-Cl距离为ca。 4.1 A。在浓 AIC 溶液中，Fe3+ 呈四面体配位，并发生氯桥连。 Fe-Cl距离为2.28±0.02 Á，最近邻Cl-Cl原子对相互作用发生在约。 3.7A。
X-ray diffraction measurements indicate that the solute species formed in concentrated aqueous solutions of FeCl3-6H20 (ICHH) and FeCl3 (AIC) are different shortly after solution preparation, suggesting a slow equilibration of the solute species in one (or both) set (s) of the aqueous solutions. Octahedrally coordinated hexaaquoiron (III) and ion-pair Fe—Cl interactions account for the solute species found in the ICHH solutions. The average Fe-0 distance is 2.04±0.02 Á, and the ion-pair Fe—Cl distance isca. 4.1 Á. In the concentrated AIC solutions, Fe3+ is tetrahedrally coordinated, and chloro bridging occurs. The Fe-Cl distance is 2.28±0.02 Á and the nearest-neighbor Cl—Cl atom-pair interactions occur at ca. 3.7 A.