固态下肌醇与三价镧系阳离子的络合作用：PrCl3·肌醇·9H2O的晶体结构及傅里叶变换红外光谱研究

Complexation of trivalent lanthanide cations by inositols in the solid state: crystal structure and an FT-IR study of PrCl3.myo-inositol.9 H2O.

作者信息

Yang L, Wang Z, Zhao Y, Tian W, Xu Y, Weng S, Wu J

机构信息

College of Chemistry and Molecular Engineering, Peking University, The University of Hong Kong Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing, PR China.

出版信息

Carbohydr Res. 2000 Dec 1;329(4):847-53. doi: 10.1016/s0008-6215(00)00230-5.

DOI:10.1016/s0008-6215(00)00230-5

PMID:11125827

Abstract

The title compound, PrCl3.C6H12O6.9 H2O crystallized in the monoclinic space group P2(1)/n with cell dimensions a = 15.8293(3), b = 8.67750(10), c = 16.2292(3) A, beta = 107.0788(8) degrees, V = 2130.92(6) A3 and Z = 4. Each Pr ion is coordinated to nine oxygen atoms, two from the inositol and seven from water molecules, with Pr-O distances from 2.4729 to 2.6899 A; the other two water molecules are hydrogen-bonded. No direct contacts exist between Pr and Cl. There is an extensive network of hydrogen bonds formed by hydroxyl groups, water molecules, and chloride ions. The IR spectra of Pr-, Nd-, and Sm-inositol complexes are similar, which shows that the three metal ions have the same coordination mode. The IR results are consistent with the crystal structure.

摘要

标题化合物PrCl₃·C₆H₁₂O₆·9H₂O以单斜空间群P2(1)/n结晶，晶胞参数a = 15.8293(3)，b = 8.67750(10)，c = 16.2292(3) Å，β = 107.0788(8)°，V = 2130.92(6) Å³，Z = 4。每个Pr离子与九个氧原子配位，两个来自肌醇，七个来自水分子，Pr - O距离为2.4729至2.6899 Å；另外两个水分子通过氢键相连。Pr和Cl之间不存在直接接触。由羟基、水分子和氯离子形成了广泛的氢键网络。Pr - 、Nd - 和Sm - 肌醇配合物的红外光谱相似，这表明三种金属离子具有相同的配位模式。红外结果与晶体结构一致。