化学
铜
反离子
无机化学
金属
选择性
反铁磁性
化学计量学
试剂
吸附
结晶学
离子
物理化学
有机化学
催化作用
吸附
物理
凝聚态物理
作者
Halyna I. Buvailo,Valeriya G. Makhankova,Vladimir N. Kokozay,Artem A. Babaryk,Irina V. Omelchenko,S. V. Shishkina,Dariusz C. Bieñko,Julia Jezierska,Alina Bieńko
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2022-04-04
卷期号:61 (15): 5701-5714
被引量:7
标识
DOI:10.1021/acs.inorgchem.1c02993
摘要
A one-pot reaction of a copper source (metallic powder Cu0 or Cu2+ salts) and bpy (bpy = 2,2'-bipyridine) in the presence of (NH4)2HPO4 and (NH4)6Mo7O24·4H2O yields heterometallic hybrid compounds of the general type {[Cu(bpy)n(H2O)m]p[P2MoxOy]}. The structures exhibit a number of phosphomolybdate POMs including not only a common Strandberg anion [P2Mo5O23]6- but also its unprecedented bi- and trilacunary derivatives [P2Mo3O18]8- and [P2Mo2O15]8-. The structural determinants including the metal source (copper powder vs copper salts), counterion of the salts, and stoichiometry of the reagents were examined. An ex situ EPR study revealed the formation of different CuII complexes in the reaction mixture depending on the copper precursor. The obtained compounds have been found to possess selectivity toward the sorption of methylene blue in a mixture of organic dyes. DC magnetic measurements of 1-3 indicate rather strong antiferromagnetic metal-metal exchange interactions. Compound 1 exhibits field-induced slow magnetic relaxation in AC magnetic measurements, which is a rarely observed phenomenon among Cu(II) complexes.
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