当前位置：
X-MOL 学术
›
Inorg. Chem. Front.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Non-traditional thermal behavior of Co(II) coordination networks showing slow magnetic relaxation
Inorganic Chemistry Frontiers ( IF 7 ) Pub Date : 2021-07-27 , DOI: 10.1039/d1qi00667c Anna Świtlicka 1 , Barbara Machura 1 , Alina Bieńko 2 , Sandra Kozieł 2 , Dariusz C. Bieńko 3 , Cyril Rajnák 4 , Roman Boča 4 , Andrew Ozarowski 5 , Mykhaylo Ozerov 5
Inorganic Chemistry Frontiers ( IF 7 ) Pub Date : 2021-07-27 , DOI: 10.1039/d1qi00667c Anna Świtlicka 1 , Barbara Machura 1 , Alina Bieńko 2 , Sandra Kozieł 2 , Dariusz C. Bieńko 3 , Cyril Rajnák 4 , Roman Boča 4 , Andrew Ozarowski 5 , Mykhaylo Ozerov 5
Affiliation
|
Three new coordination polymers, one-dimensional ones [Co(5,6-(Me)2-bzim)2(dca)2] (1) and [Co(5-Mebzim)2(dca)2]n (2) and two-dimensional polymer [Co(2-Mebzim)(dca)2]n (3), show DC magnetic data consistent with the S = 3/2 spin system with large zero-field splitting D > 0, which was confirmed by high-field HF EPR and FIRMS measurements. The experimental spectra of all complexes were simulated with axial g tensor components, a very large positive D value and different E/D ratios. These systems exhibit a slow magnetic relaxation under the moderate DC magnetic field with two relaxation channels. The high-frequency relaxation time develops according to combined Raman and phonon bottleneck relaxation mechanisms resulting from the unexpected thermal reciprocating behaviour when the low temperature relaxation time for the HF channel during cooling is shortened.
中文翻译：
Co(II) 配位网络的非传统热行为表现出缓慢的磁弛豫
三种新的配位聚合物，一维的 [Co(5,6-(Me) 2 -bzim) 2 (dca) 2 ] ( 1 ) 和 [Co(5-Mebzim) 2 (dca) 2 ] n ( 2 )和二维聚合物 [Co(2-Mebzim)(dca) 2 ] n ( 3 )，显示直流磁数据与大零场分裂D > 0的S = 3/2 自旋系统一致，这证实了高场 HF EPR 和 FIRMS 测量。所有配合物的实验光谱都用轴向g张量分量模拟，一个非常大的正D值和不同的E / D比率。这些系统在具有两个弛豫通道的中等直流磁场下表现出缓慢的磁弛豫。高频弛豫时间是根据拉曼和声子瓶颈弛豫机制的组合产生的，这是由于冷却过程中 HF 通道的低温弛豫时间缩短时意外的热往复行为导致的。
更新日期：2021-08-16
中文翻译：
Co(II) 配位网络的非传统热行为表现出缓慢的磁弛豫
三种新的配位聚合物，一维的 [Co(5,6-(Me) 2 -bzim) 2 (dca) 2 ] ( 1 ) 和 [Co(5-Mebzim) 2 (dca) 2 ] n ( 2 )和二维聚合物 [Co(2-Mebzim)(dca) 2 ] n ( 3 )，显示直流磁数据与大零场分裂D > 0的S = 3/2 自旋系统一致，这证实了高场 HF EPR 和 FIRMS 测量。所有配合物的实验光谱都用轴向g张量分量模拟，一个非常大的正D值和不同的E / D比率。这些系统在具有两个弛豫通道的中等直流磁场下表现出缓慢的磁弛豫。高频弛豫时间是根据拉曼和声子瓶颈弛豫机制的组合产生的，这是由于冷却过程中 HF 通道的低温弛豫时间缩短时意外的热往复行为导致的。
京公网安备 11010802027423号