Abstract
Hexacyanoferrates are well-known to form metal organic frameworks by coordination to metal atoms or acting as hydrogen bond acceptors. In this paper we report a new type of hexacyanoferrate self-assembly, based on direct hydrogen bonding of partially protonated hexacyanoferrate anions. By preparing a series of 15 hexacyanoferrates with various organic bases, we have found that protonated hexacyanoferrates (present in 10 structures) readily form chains (two structures), two-dimensional (four structures), or three-dimensional networks (four structures), whereby the dimensionality of the network generally increases with the protonation degree of the hexacyanoferrates. The exact mode of the self-assembly, including the network type, depends on fine interplay of the pK(a) value of the base, its steric properties, and the stoichiometry of the formed solid.
Original language | English |
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Pages (from-to) | 6793-6800 |
Number of pages | 8 |
Journal | Crystal Growth & Design |
Volume | 17 |
Issue number | 12 |
DOIs | |
Publication status | Published - Dec-2017 |
Externally published | Yes |
Keywords
- PRUSSIAN BLUE ANALOGS
- SODIUM-ION BATTERIES
- MOLECULAR TECTONICS
- CRYSTAL-STRUCTURE
- COORDINATION POLYMER
- MAGNETIC-PROPERTIES
- ROOM-TEMPERATURE
- POTENTIOMETRIC DETERMINATION
- BIMETALLIC ASSEMBLIES
- CATHODE MATERIALS