A trial manufacture of irradiation/photometry system for cryogenic magneic susceptometer and optofunctionalization of molecule based magnet

低温磁感受器辐照/测光系统的试制及分子磁体的光功能化

• 批准号: 08554023
• 负责人: IWAMURA Hiizu
• 金额: $ 9.86万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08554023/
• 关键词: SQUID susceptometer; Nd; YAG laser; Second harmonic dipyridylcarbene; dipyridylcarbene; YAGレーザー

By mixing 4,4-dipyridyldiazomethane with Mn (hfac) _2or Cu (hfac) _2in 1 : 1 ratio, 1 : 1 complexes have been obtained as red-orange and dark green crystals respectively. X-ray crystallography revealed the polymorphism of the manganese complex. While in one crystal pyridine coordinated as cis configuration and resulted in helical structure, in the other crystal the structure was trans configuration and zigzag chain. Copper complexes had trans configuration and zigzag chain. The photolysis to the crystal was performed by second harmonic wave of Nd/YAG laser. The magnetic susceptibility before and after photolysis was measured by SQUID susceptometer at 2-300K.The temperature dependence of the susceptibility of manganese complex before irradiation showed isolation of magnanese spin, but after irradiation the formation of ferrimagnetic one-dimensional chain composed of manganese and carbene spins. The maximun number of correlation spins was 900. In the case of copper complex, ferromagnetic one-dimensional chain was formed.

通过将4,4-二吡啶基重氮甲烷与Mn(hfac)_2或Cu(hfac)_2以1:1的比例混合，分别得到红橙色和深绿色晶体的1:1配合物。 X射线晶体学揭示了锰络合物的多晶型。在一种晶体中，吡啶配位为顺式构型并形成螺旋结构，而在另一种晶体中，结构为反式构型和锯齿链。铜配合物具有反式构型和锯齿链。利用Nd/YAG激光的二次谐波对晶体进行光解。采用SQUID磁化率计在2-300K下测量了光解前后的磁化率。辐照前锰配合物磁化率的温度依赖性显示出镁自旋的隔离，但辐照后形成了由锰和卡宾组成的亚铁磁一维链旋转。相关自旋的最大数量为900。在铜络合物的情况下，形成铁磁一维链。

项目成果

Hiizu Iwamura: "High-Spin Polynitroxide Radicals as Versatile Bridging Ligands for Transition Metal Complexes with High-Ferri-/Ferromagnetic TC" Pure Appl.Chem.68. 243-252 (1996)

Hiizu Iwamura：“高自旋聚硝基氧自由基作为具有高铁/铁磁性 TC 的过渡金属配合物的多功能桥连配体”Pure Appl.Chem.68。

H.Iwamura, K.Inoue and T.Hayamizu: ""High-Spin Polynitroxide Radicals as Versatile Bridging Ligands for Transition Metal Complexes with High Ferri-/Ferromagnetic Tc"" Pure Appl.Chem.68. 243-252 (1996)

H.Iwamura、K.Inoue 和 T.Hayamizu：“高自旋聚硝基氧自由基作为具有高铁/铁磁性 Tc 的过渡金属配合物的通用桥配体””Pure Appl.Chem.68。

Kenji Matsuda: "Control of the “Superexchenge" Interaction through Diphenyl Sulfide 4,4-Diyl Magnetic Coupler by Changing the Oxidation State and Conformation of the Sulfur Atom" J.Am.Chem.Soc.119. 8058-8064 (1997)

Kenji Matsuda：“通过改变硫原子的氧化态和构象来控制二苯硫醚 4,4-二基磁耦合剂的“超级交换”相互作用”J.Am.Chem.Soc.119 (1997)。

J.Fujita, M.Tanaka, H.Suemune, N.Koga, K.Matsuda, and H.Iwamura: ""Antiferromagnetic Exchange Interaction among the Three Spins Placed in an Isosceles Triangular Configuration in 2,4-Dimethoxy-1,3,5-benzenetriyltris (N-tert-butyl nitroxide) "" J.Am.Chem.S

J.Fujita、M.Tanaka、H.Suemune、N.Koga、K.Matsuda 和 H.Iwamura：“2,4-二甲氧基-1,3 中等腰三角形构型的三个自旋之间的反铁磁交换相互作用”

K.Matsuda and H.Iwamura: ""High-spin Organic Molecular Materials"" Curr.Opin.Solid State Mater.Sci.2(4). 446-450 (1997)

K.Matsuda 和 H.Iwamura：““高自旋有机分子材料””Curr.Opin.Solid State Mater.Sci.2(4)。