catena‐Poly[[diaqua(isonicotinato‐O,O′)europium(III)]‐di‐μ‐isonicotinato‐O:O′] |
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Authors: | Xi‐Rui Zeng Yan Xu Ren‐Geng Xiong Li‐Juan Zhang Xiao‐Zeng You |
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Abstract: | The title complex, [Eu(C6H4O2)3(H2O)2], has a double carboxylate‐bridged infinite‐chain structure, with one chelating carboxylate group on each Eu ion centre, which also binds to two water molecules to yield an eight‐coordinate square‐antiprismatic geometry, with Eu—O bond lengths in the range 2.338 (3)–2.594 (3) Å. The pyridine N atoms of the isonicotinate groups do not coordinate to the Eu ions; instead, they direct the formation of EuIII coordination polymers via hydrogen bonding with coordinated water molecules. |
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