کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1233679 | 968814 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spectroscopic investigation of the interaction between diperoxovanadate complexes and benzimidazole-like ligands
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Spectroscopic investigation of the interaction between diperoxovanadate complexes and benzimidazole-like ligands Spectroscopic investigation of the interaction between diperoxovanadate complexes and benzimidazole-like ligands](/preview/png/1233679.png)
چکیده انگلیسی
To understand the effects of benzimidazole substitution on reaction equilibrium, the interactions between a series of benzimidazole-like ligands and [OV(O2)2(D2O)]â/[OV(O2)2(HOD)]â in solution were explored by a combination of multinuclear (1H, 13C, and 51V) magnetic resonance and variable temperature NMR in 0.15 mol/L NaCl ionic medium for mimicking the physiological condition. Some direct NMR data are reported for the first time. These results show that the relative reactivity among the organic ligands is 2-methyl-1H-benzo[d]imidazole > (1H-benzo[d]imidazol-2-yl)methanol > 1-(1H-benzo[d]imidazol-2-yl)ethanol > 1H-benzo[d][1,2,3]triazole. Both the steric effect and the electron effect of the 2-position substituted groups in benzimidazole ring affect the reaction equilibrium. The competitive coordination results in the formation of a series of new six-coordinated peroxovanadate species [OV(O2)2L]â (L = benzimidazole-like ligands). Moreover, the results of density functional calculations provided a reasonable explanation on the relative reactivity of the benzimidazole-like ligands as well as the important role of solvation in these reactions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 77, Issue 4, November 2010, Pages 816-820
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 77, Issue 4, November 2010, Pages 816-820
نویسندگان
Xianyong Yu, Fengxian Yang, Danhong Ji, Jiming Zhou, Ronghua Liu, Guobin Li, Xiaofang Li, Jian Chen, Haowen Huang, Pinggui Yi,