Rare earth-N, N'-(2-hydroxy-3-methoxybenzene methyl) ethylene diamine complex single crystal and preparation thereof
A technology of methoxybenzyl and complexes, which is applied in the field of single crystal compounds and their preparation, can solve the problems of inaccurately judging the real structure of powder complexes, achieve clear composition and molecular structure, and require low experimental equipment , The effect of simple process
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Embodiment 1
[0023] Example 1. Rare earth-N, N'-(2-hydroxy-3-methoxybenzyl) ethylenediamine complex single crystal is characterized in that its crystal structure is as follows figure 1 shown. Among them: Ln represents the rare earth ion Tb 3+ , Pr 3+ , Er 3+ . When Ln is rare earth ion Pr 3+ , the unit cell parameters of the complex are: orthorhombic crystal system, space group Iba2, α=β=γ=90°, the space is packed into a three-dimensional network; when Ln is a rare earth ion Tb 3+ When , the unit cell parameters of the single crystal of the complex are: orthorhombic crystal system, space group Iba2, α=β=γ=90°, the space is packed into a three-dimensional network; when Ln is a rare earth ion Er 3+ , the unit cell parameters of the single crystal of the complex are: orthorhombic system, space group Iba2, α=β=γ=90°, the space is packed into a three-dimensional network.
Embodiment 2
[0024] Example 2. A kind of rare earth-N as described in embodiment 1, the preparation method of N '-(2-hydroxyl-3-methoxybenzyl) ethylenediamine complex single crystal, first rare earth ion Tb 3+ or Pr 3+ or Er 3+ Soluble in ethanol, then add N,N'-(2-hydroxy-3-methoxybenzyl)ethylenediamine to react, and the rare earth ion and N,N'-(2-hydroxy-3-form The ratio of the amount of oxybenzyl) ethylenediamine substance is 2:1.
Embodiment 3
[0025] Example 3. refer to figure 1 , 2 . N,N'-(2-hydroxy-3-methoxybenzyl)ethylenediamine praseodymium (III) complexes. Its preparation method steps are as follows:
[0026] 0.355g (1mmol) PrCl 3 ·6H 2 Dissolve O in 10ml of ethanol, weigh 0.48g (2mmol) of N,N'-(2-hydroxy-3-methoxybenzyl)ethylenediamine and dissolve in 10ml of ethanol, mix and react for 2h, filter , The brown-red crystals precipitated out after the solution was left for a few weeks. IR (KBr, cm -1 ): 3258, 2946, 2858, 1572, 1477, 1385, 1292, 1234, 1076, 947, 845, 733, 533. Elemental Analysis, C 36 h 45 N 4 o 8 Pr: Calculated for C53.75; H5.65; N6.98. The measured values are C53.61; H5.54; N6.88. X-diffraction single crystal structure picture figure 1 shown. The crystallographic data are listed in Table 1.
[0027] Table 1 Crystallographic data of the complexes
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