Four cobalt coordination polymers, namely, {[Co(3-pmpmd)Cl₂]·2.6CH₃OH}_n (1), {[Co₂(3-pmpmd)₄(NCS)₄]·2CH₃OH·5CHCl₃}_n (2), {[Co(3-pmpmd)1.5(NO₃)₂]·0.8CH₃OH}_n (3) and {[Co(3-pmpmd)₂(NCS)₂]·CHCl₃}_n (4) (3-pmpmd = N,N′-bis(3-pyridylmethyl)pyromellitic diimide) have been synthesized and characterized. The different conformations of the diimide ligand are crucial for obtaining structural diversity. The adsorption isotherms of complex 3 for water and ethanol are quite different; 3 adsorbs water with a gate-opening phenomenon, but it does not adsorb ethanol and therefore, it has the potential capacity to capture water from ethanol.

中文翻译：

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用于水/乙醇分离和发光的 多种钴（ii）配位聚合物，用于水传感应用†

四种钴配位聚合物，即{[Co（3-pmpmd）Cl ₂ ]·2.6CH ₃ OH} _n（1），{[Co ₂（3-pmpmd）₄（NCS）₄ ]·2CH ₃ OH·5CHCl ₃ } _n（2），{[Co（3-pmpmd）1.5（NO ₃）₂ ]·0.8CH ₃ OH} _n（3）和{[Co（3-pmpmd）₂（NCS）₂ ]·CHCl ₃ } _n（4）（3-pmpmd = N，N合成了'-双（3-吡啶基甲基）均苯四甲二酰亚胺）。二酰亚胺配体的不同构象对于获得结构多样性至关重要。配合物3对水和乙醇的吸附等温线有很大不同；3吸附有开门现象的水，但不吸附乙醇，因此具有从乙醇中捕获水的潜在能力。