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

将4，4-联吡啶重氮甲烷与Mn（hfac）_2或Cu（hfac）_2按1：1的比例混合，得到1：1的配合物，分别为红橙色和深绿色晶体。X射线晶体学显示锰配合物的多晶型。其中一种晶体中吡啶以顺式配位形成螺旋结构，而另一种晶体中吡啶以反式配位形成锯齿状链状结构。铜配合物具有反式构型和锯齿形链状结构。用Nd/YAG激光的二次谐波对晶体进行光解。在2- 300 K温度范围内，用SQUID磁敏仪测量了锰配合物光解前后的磁化率，发现锰配合物在辐照前磁化率随温度的变化表现为锰自旋的孤立，而在辐照后形成了由锰和卡宾自旋组成的亚铁磁一维链.最大相关自旋数为900。在铜配合物的情况下，铁磁一维链形成。

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.