State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, China.
Carbohydr Res. 2012 Nov 1;361:12-8. doi: 10.1016/j.carres.2012.07.026. Epub 2012 Aug 8.
Three novel lanthanum chloride-erythritol complexes (LaCl(3)·C(4)H(10)O(4)·5H(2)O (LaE(I)), LaCl(3)·C(4)H(10)O(4)·3H(2)O (LaE(II)), and LaCl(3)·1.5C(4)H(10)O(4) (LaE(III)) were synthesized and characterized by single crystal X-ray diffraction, FTIR, far-IR, THz, and Raman spectroscopy. The coordination number of La(3+) is nine. LaE(I) and LaE(II) have similar coordination spheres, but their hydrogen bond networks are different. Erythritol exhibits two coordination modes: two bidentate ligands and tridentate ligands in LaE(III). Chloride ions and water coordinate with La(3+) or participate in the hydrogen-bond networks in the three complexes. Crystal structures, FTIR, FIR, THz, and Raman spectra provide detailed information on the structures and coordination of hydroxyl groups to metal ions in the metal-carbohydrate complexes.
三种新型的氯化镧-赤藓糖醇配合物（LaCl(3)·C(4)H(10)O(4)·5H(2)O (LaE(I))、LaCl(3)·C(4)H(10)O(4)·3H(2)O (LaE(II)) 和 LaCl(3)·1.5C(4)H(10)O(4) (LaE(III)) 通过单晶 X 射线衍射、FTIR、远红外、太赫兹和拉曼光谱进行了合成和表征。La(3+)的配位数为九。LaE(I) 和 LaE(II) 具有相似的配位球，但它们的氢键网络不同。赤藓糖醇在 LaE(III) 中表现出两种配位模式：两个双齿配体和一个三齿配体。氯离子和水分子与 La(3+)配位或参与三种配合物中的氢键网络。晶体结构、FTIR、FIR、太赫兹和拉曼光谱为金属-碳水化合物配合物中羟基与金属离子的结构和配位提供了详细信息。
