Аннотация
Halidocuprates(ii) show unusual magnetic properties and a high degree of structural flexibility. We present the results of crystallographic, electron paramagnetic resonance (EPR) spectroscopic and magnetochemical analyses of a new [HL]2n[Cu3Br8]n compound (HL = 3-amino-4-bromopyrazolium)-the first example of an inorganic polymer built from trimeric [Cu3Br8]2- units with a 5-membered nitrogen-containing heterocycle as an organic counter ion. The EPR spectrum of the polycrystalline sample exhibited a signal at g ≅ 2.06 broadened owing to spin-spin interactions between copper ions. The EPR and magnetochemical data indicate a ferromagnetic intertrimer interaction with Θ = 13 K and an antiferromagnetic intratrimer interaction with J = 310 K between the nearest-neighbor copper(ii) ions, which is in agreement with DFT calculations.
Язык оригинала | английский |
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Страницы (с-по) | 18203-18209 |
Число страниц | 7 |
Журнал | New Journal of Chemistry |
Том | 43 |
Номер выпуска | 46 |
DOI | |
Состояние | Опубликовано - 14 дек 2019 |