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Local coordination of Co2+ and Ni2+ cations in polyacrylate matrices |
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| Authors: | N N Trofimova Ya V Zubavichus O I Titova E A Karpyuk V A Ivanov A D Pomogailo Yu L Slovokhotov |
| Institution: | 1. Moscow State University, Moscow, 119991, Russia 2. National Research Center Kurchatov Institute, Moscow, 123182, Russia 3. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, 119991, Russia 4. Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia |
| Abstract: | Parameters of the local coordination of Co2+ and Ni2+ cations in polymer matrices are determined by XAFS spectroscopy at the K edges of the corresponding elements. Ion-exchange complexes of Ni2+ and polymethacrylate, low-molecular acrylamide complexes M(CH2=CHC(O)NH2)6](NO3)2 (M = Co or Ni), and products of their thermal polymerization are investigated. The final results are in agreement with the octahedral coordination of M atoms (average distances, 2.10–2.11 (Co-O) and 2.05–2.06 Å (Ni-O). |
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