| 2-(5-甲基-1，3，4-噻二唑)-硫乙酸稀土配合物的合成和晶体结构(英文) |
| Syntheses and Crystal Structures of Rare Earth Coordination Compounds with 2-(5-Methyl-1,3,4-thiadiazol-2-ylthio)acetic Acid |
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| 摘要: 由溶液法合成了2个稀土配合物{[Ln(Hmtyaa)3(H2O)2]·H2O}n(Ln=Nd，1；Pr，2)(Hmtyaa=2-(5-甲基-1，3，4-噻二唑)-硫乙酸)，用X-射线单晶衍射仪测定了配合物的单晶结构，并对其进行了元素分析、红外光谱、热重和粉末X-射线衍射等表征。晶体结构表明：配合物1和2结构相同，都属于三斜晶系，P1 空间群。配合物中金属离子均采取九配位模式，金属离子被配体桥连形成一维双链结构，该一维双链被氢键和π-π作用连接成二维层状结构。 |
| 关键词: 2-(5-甲基-1，3，4-噻二唑)-硫乙酸 稀土 晶体结构 π-π相互作用 氢键 |
| 基金项目: |
| Abstract: Two coordination compounds {[Ln(Hmtyaa)3(H2O)2]·H2O}n(Ln=Nd, 1; Pr,2) (Hmtyaa is 2-(5-methyl-1,3,4-thiadiazol-2-ylthio)acetic acid) have been synthesized and they were structurally characterized by single-crystal X-ray diffraction, and then were characterized by elemental analysis, FTIR spectra, thermal analysis and powder X-ray diffraction. Both compounds are isostructural and crystallize in the triclinic system, space group P1. Single crystal X-ray diffraction analysis indicate that each asymmetric unit contains one metal ion and one non-coordinated water molecules and each Ln(Ⅲ) (Ln=Nd, Pr) ion adopts nine-coordinated mode in both compounds. Metal centers are bridged together by carboxylate oxygen atoms to result in a double chain structure. Weak face-to-face π-π interactions between the neighbouring parallel thiadiazole rings of the ligand link the compounds into 2D layer structures. CCDC: 653458, 1; 653459, 2. |
| Keywords: 2-(5-methyl-1,3,4-thiadiazol-2-ylthio)acetic acid rare earth crystal structure π-π interaction hydrogen bonds |
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| 潘兆瑞.2-(5-甲基-1，3，4-噻二唑)-硫乙酸稀土配合物的合成和晶体结构(英文)[J].无机化学学报,2011,27(10):2027-2032. |
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