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Four-Step Spin Crossover in a New Cyano-Bridged Iron-Silver Coordination Polymer |
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| Authors: | Olesia I Kucheriv Dr Sergii I Shylin Valerii Y Sirenko Dr Vadim Ksenofontov Prof Wolfgang Tremel Dr Ioan-Andrei Dascălu Dr Sergiu Shova Dr Il'ya A Gural'skiy |
| Institution: | 1. Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska St. 64, Kyiv, 01601 Ukraine;2. Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg University of Mainz, Staudingerweg 9, Mainz, 55099 Germany
Department of Chemistry – Ångström Laboratory, Uppsala University, Uppsala, 75120 Sweden;3. Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg University of Mainz, Staudingerweg 9, Mainz, 55099 Germany;4. Department of Inorganic Polymers, Institute of Macromolecular Chemistry “Petru Poni”, Aleea Grigore Ghica Voda 41 A, Iasi, 700487 Romania |
| Abstract: | Spin-crossover complexes with multistep transitions attract much attention due to their potential applications as multi-switches and for data storage. A four-step spin crossover is observed in the new iron(II)-based cyanometallic guest-free framework compound Fe(2-ethoxypyrazine)2{Ag(CN)2}2 during the transition from the low-spin to the high-spin state. A reverse process occurs in three steps. Crystallographic studies reveal an associated stepwise evolution of the crystal structures. Multiple transitions in the reported complex originate from distinct FeII sites which exist due to the packing of the ligand with a bulky substituent. |
| Keywords: | Hofmann clathrates analogues iron(II) multistep transitions spin crossover substituted pyrazine |