studied in dehydrated variants of the compounds A2Zn3 [Fe (CN) 6] 2· xH2O (A= H, Li, Na, K, Rb), revealing maximum adsorption enthalpies that vary from 7.7 kJ mol− 1 for A= Na to 9.0 kJ mol− 1 for A= K.
The impact of coordinatively-unsaturated alkali-metal ions on hydrogen adsorption is studied in dehydrated variants of the compounds A2Zn3[Fe(CN)6]2·xH2O (A = H, Li, Na, K, Rb), revealing maximum adsorption enthalpies that vary from 7.7 kJ mol−1 for A = Na to 9.0 kJ mol−1 for A = K.