Ion Solvation and Ion Association in Methanol Solution of Lithium Perchlorate
摘 要
通过红外光谱技术探讨了高氯酸锂甲醇溶液中离子与溶剂、离子与离子之间的相互作用。红外光谱分析结果表明:锂离子与溶剂发生了相互作用导致甲醇分子的O-H伸缩振动区蓝移,ClO-4的特征谱带的变化表明了溶液中存在离子缔合。根据密度泛函理论,对不同溶剂化数的配合物结构和两种离子对形式进行优化及热力学性质的计算。
Abstract
Interactions between ions and solvent as well as between ions themselves in a methanol solution of lithium perchlorate were studied by IR spectrometry. As shown by the experimental results, the spectral change of solvent molecule, i.e., the molecule of CH3OH, was due to the interaction between the Li+ ion and CH3OH molecule leading to hypsochromic shift of stretching vibration of O-H group, and it was deduced that the hydrogen bonds between CH3OH molecules were destroyed by the solvation of Li+ ion. Ion association between Li+ and ClO-4 to form (Li+ClO-4) ion pair and its dimer (Li+ClO-4)2 was proved by the change of characteristic bands of ClO-4 ion. Based on the density-functional theory, optimization of structures of the coordination complex [Li(CH3OH)n]+ with different solvation numbers from 1 to 4 and the ion association complexes of (Li+ClO-4) and (Li+ClO-4)2 as well as the thermodynamic parameters were calculated.
中图分类号 O657.33
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收稿日期 2009/11/15
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备注方星(1970-),女,安徽桐城人,讲师,硕士研究生,主要研究方向为工业及仪器分析。
引用该论文: FANG Xing,WU Xiao-jing. Ion Solvation and Ion Association in Methanol Solution of Lithium Perchlorate[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2011, 47(1): 47~49
方星,吴晓静. 高氯酸锂甲醇溶液中离子溶剂化和离子缔合现象[J]. 理化检验-化学分册, 2011, 47(1): 47~49
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参考文献
【1】卢雁,苏贵金,卢锦梭.碱金属盐和碱土金属盐溶液的红外光谱研究进展[J].化学研究与应用, 2001,13(5):485-490.
【2】吴艳平,陈松涛,卢维奇.LiNO3在DMF中的离子溶剂化和离子缔合的红外光谱[J].应用化学, 2004,21(11):1174-1177.
【3】汤俊明,轩小朋,王键吉,等.高氯酸锂在有机溶剂中离子溶剂化和离子缔合的红外光谱研究[J].光谱学与光谱分析, 2001,21(4):472-474.
【4】轩小朋,王键吉,赵扬,等.高浓度LiClO4/丙酮溶液中离子-溶剂和离子-离子的相互作用[J].化学学报, 2005,63(18):1693-1698.
【5】赵扬,王键吉,轩小朋,等.Li+在PC+DMF混合溶剂中优先溶剂化的13C NMR研究[J].化学学报, 2006,64(21):2145-2150.
【6】陈园园,吴晓静,李发.红外光谱法研究氯化钙甲醇溶液的溶剂化性质[J].理化检验-化学分册, 2008,44(4):310-313.
【7】吴晓静,许晓娜.MgCl2/甲醇溶液的近红外光谱研究及计算[J].化学学报, 2009,67(6):535-540.
【8】WU Xiao-jing, CHEN Yuan-yuan, YAMAGUCHI T. Hydrogen bonding in methanol studied by infrared spectroscopy[J]. J Mol Spectrosc, 2007,246:187-191.
【9】BUSHKOVA O V, POPOV S E, YAROSLAVTSEVA T V, et al. Ion-molecular and ion-ion interactions in solvent-free polymer electrolytes based on amorphous butadiene- acrylontrile copolymer and LiAsF6[J]. Solid State Ionics, 2008,178(35/36):1817-1830.
【10】轩小朋,张虎成,王键吉,等.NaBF4/DMSO溶液微观结构的研究[J].化学学报, 2004,62(10):940-945.
【11】MACHINAGA H, OHASHI K, INOKUCHI Y, et al. Infrared photodissociation spectra and solvation structures of Mg+(CH3OH)n (n=1~4)[J]. Chemical Physics Letters, 2004,391(1/3):85-90.
【12】程琥,朱昌宝,杨勇.聚氧化乙烯基聚合物电解质中离子缔合与结晶状态的傅立叶变换红外光谱(FTIR)研究[J].化学学报, 2007,65(24):2832-2838.
【2】吴艳平,陈松涛,卢维奇.LiNO3在DMF中的离子溶剂化和离子缔合的红外光谱[J].应用化学, 2004,21(11):1174-1177.
【3】汤俊明,轩小朋,王键吉,等.高氯酸锂在有机溶剂中离子溶剂化和离子缔合的红外光谱研究[J].光谱学与光谱分析, 2001,21(4):472-474.
【4】轩小朋,王键吉,赵扬,等.高浓度LiClO4/丙酮溶液中离子-溶剂和离子-离子的相互作用[J].化学学报, 2005,63(18):1693-1698.
【5】赵扬,王键吉,轩小朋,等.Li+在PC+DMF混合溶剂中优先溶剂化的13C NMR研究[J].化学学报, 2006,64(21):2145-2150.
【6】陈园园,吴晓静,李发.红外光谱法研究氯化钙甲醇溶液的溶剂化性质[J].理化检验-化学分册, 2008,44(4):310-313.
【7】吴晓静,许晓娜.MgCl2/甲醇溶液的近红外光谱研究及计算[J].化学学报, 2009,67(6):535-540.
【8】WU Xiao-jing, CHEN Yuan-yuan, YAMAGUCHI T. Hydrogen bonding in methanol studied by infrared spectroscopy[J]. J Mol Spectrosc, 2007,246:187-191.
【9】BUSHKOVA O V, POPOV S E, YAROSLAVTSEVA T V, et al. Ion-molecular and ion-ion interactions in solvent-free polymer electrolytes based on amorphous butadiene- acrylontrile copolymer and LiAsF6[J]. Solid State Ionics, 2008,178(35/36):1817-1830.
【10】轩小朋,张虎成,王键吉,等.NaBF4/DMSO溶液微观结构的研究[J].化学学报, 2004,62(10):940-945.
【11】MACHINAGA H, OHASHI K, INOKUCHI Y, et al. Infrared photodissociation spectra and solvation structures of Mg+(CH3OH)n (n=1~4)[J]. Chemical Physics Letters, 2004,391(1/3):85-90.
【12】程琥,朱昌宝,杨勇.聚氧化乙烯基聚合物电解质中离子缔合与结晶状态的傅立叶变换红外光谱(FTIR)研究[J].化学学报, 2007,65(24):2832-2838.
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