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用2-氨基-5-巯基-1,3,4-噻二唑乙酸(Hatma)为配体合成出2种新型同构的稀土配合物[Ln(atma)3(H2O)2]n(Ln=La(1),Nd(2))。配体和2个配合物的结构均由X-射线单晶衍射法确定,同时对配合物进行了IR,TGA及元素分析。单晶结构表明,配体属单斜晶系,C2/c空间群,晶胞参数为a=2.141 9(9)nm,b=0.400 76(17)nm,c=1.750 0(8)nm,V=1.495 0(11)nm3,Z=4;配合物1和2的晶体都属于三斜晶系,空间群为P1,配合物1的晶胞参数为a=0.882 0(3)nm,b=1.230 6(4)nm,c=1.258 6(4)nm,V=1.291 3(7)nm3,Z=2;配合物2的晶胞参数为a=0.883 4(4)nm,b=1.228 3(5)nm,c=1.251 0(5)nm,V=1.282 1(9)nm3,Z=2。2个配合物均形成一维链状空间结构,通过丰富的氢键连接形成三维超分子结构。抗菌试验表明,配合物比配体表现出更好的生物活性。初步的植物生长实验表明,配合物对油菜和小麦的生长具有一定的促进作用。
Two new isomorphic rare earth complexes [Ln (atma) 3 (H2O) 2] n (Ln) were synthesized using 2-amino-5-mercapto-1,3,4-thiadiazoleacetic acid = La (1), Nd (2)). The structures of the ligands and the two complexes were determined by X-ray single crystal diffraction. At the same time, the complexes were analyzed by IR, TGA and elemental analysis. The single crystal structure shows that the ligands are monoclinic and C2 / c space group. The unit cell parameters are a = 2.141 9 (9) nm, b = 0.400 76 (17) nm and c = 1.750 0 V = 1.495 0 (11) nm3, Z = 4. The complexes 1 and 2 all belong to the triclinic system with the space group P1. The unit cell parameters of the complex 1 are a = 0.882 0 (3) nm, b = 1.230 6 (4) nm, c = 1.258 6 (4) nm, V = 1.291 3 (7) nm3, Z = 2. The lattice parameters of complex 2 are a = 0.883 4 (4) nm and b = 1.228 The complex of 3 (5) nm, c = 1.251 0 (5) nm, V = 1.282 1 (9) nm3 and Z = 2.2 all formed one-dimensional chain- Molecular Structure. Antibacterial tests showed that the complexes showed better biological activity than the ligands. Preliminary plant growth experiments show that the complexes have a certain promotion effect on the growth of rapeseed and wheat.