Synthesis, Crystal Structures, Magnetic Properties, and Fluorescence of Two Heptanuclear Co
<sup>III</sup>
<sub>4</sub>
Ln
<sup>III</sup>
<sub>3</sub>
Compounds (Ln = Gd
<sup>III</sup>
, Dy
<sup>III</sup>
): Multiple Relaxation Dynamics in the Dy
<sup>III</sup>
Analogue
作者:Shuvayan Roy、Nairita Hari、Sasankasekhar Mohanta
DOI:10.1002/ejic.201900383
日期:2019.8.7
This report describes the synthesis, crystal structures, magnetic and spectroscopic properties of two heptanuclear CoIII4LnIII3 systems of composition [CoIII4GdIII3L4(µ4‐O)2(µ‐OMe)2(µ1,3‐OAc)4(H2O)2(NO3)2]·NO3·2CH3OH·2H2O (1) and [CoIII4DyIII3L4(µ4‐O)2(µ‐OMe)2(µ1,3‐OAc)4(H2O)2(NO3)2]·NO3·3CH3OH·1.5H2O (2), where H2L is [1+1] condensation product of 3‐methoxysalicylaldehyde and 2‐amino‐2‐methyl‐1‐propanol
本报告描述的合成,晶体结构,磁性和光谱性质两个heptanuclear钴III 4 LN III 3个的组合物,系统[CO III 4钆III 3大号4(μ 4 -O)2(μ-OME)2(μ 1 ,3 -OAc)4(H 2 O)2(NO 3)2 ] · NO 3 · 2CH 3 OH · 2H 2 O(1)和[Co III4 Dy III 3 L 4(µ 4 ‐O)2(µ‐OMe)2(µ 1,3 ‐OAc)4(H 2 O)2(NO 3)2 ] · NO 3 · 3CH 3 OH · 1.5H 2 O(2),其中H 2 L是3-甲氧基水杨醛和2-氨基-2-甲基-1-丙醇的[1 + 1]缩合产物。可以将1和2中的七金属核视为由两个对称相关的三核Co III组成Ln III Co III部分和一个中心的镧系元素中心,使得两个三核部分中的每一个的三个金属离子通过桥接氧代/烷氧基/乙酸盐配体与中心的