Polyoxidovanadate complexes: synthesis, structures and catalytic oxidative bromination of phenol red
作者:Xiao-Meng Lin、Xiao-Dong Feng、Yang Wang、Yong-Heng Xing、Li-Xian Sun、Si-Yue Wei、Zhan Shi
DOI:10.1080/00958972.2016.1247445
日期:2017.1.2
[H2N(CH3)2]3[PV14O42]·2TMP·6H3O+ (2), have been synthesized at different pH values using V2(SO4)3, Ni(CH3COO)2, and H6TTHA (for 1), VO(acac)2 and TPP (for 2) (en = C2H8N2, TPP = thiamine pyrophosphate, TMP = thiamine monophosphate, H6TTHA = 1,3,5-triazine-2,4,6-triamine hexaacetic acid). The complexes have been characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis (TG), and single
摘要 通过选择合适的配体,得到了两种多氧钒酸盐配合物[Ni(en)2]3[V18O42Cl]·7H2O·2H3O+(1)和[H2N(CH3)2]3[PV14O42]·2TMP·6H3O+(2)。使用 V2(SO4)3、Ni(CH3COO)2 和 H6TTHA(对于 1)、VO(acac)2 和 TPP(对于 2)在不同 pH 值下合成(en = C2H8N2,TPP = 焦磷酸硫胺素,TMP = 硫胺素单磷酸酯) , H6TTHA = 1,3,5-三嗪-2,4,6-三胺六乙酸)。该配合物已通过元素分析、红外光谱、热重分析 (TG) 和单晶 X 射线衍射表征。该配合物在H2O2和溴化物存在下催化有机底物酚红的氧化,该反应体系被认为是过氧化氢测定的模型。1 和 2 的反应速率常数 (k) 计算为 3.729 × 103 和 4.083 × 103 (mol L)-2 s-1。