We report the synthesis, crystal structure, thermal response, and electrochemical behaviour {of the|from the|in the|on the|with the|of your} Prussian blue analogue (PBA) K2Cu[Fe(CN)6]. From a structural {perspective|viewpoint|point of view}, {this is|this really is|this can be|that is} {the most|probably the most|essentially the most|one of the most|by far the most} {complex|complicated} PBA {yet|however|but} characterised: its triclinic crystal structure {results|outcomes|final results|benefits} from an interplay of cooperative Jahn–Teller order, octahedral tilts, {and a|along with a|as well as a|plus a|and also a|in addition to a} collective `slide’ distortion involving K-ion displacements. These {different|various|distinct|diverse|unique|distinctive} distortions give rise to two crystallographically-distinct K-ion channels with {different|various|distinct|diverse|unique|distinctive} mobilities. Variable-temperature X-ray powder diffraction measurements show that K-ion slides {are the|would be the|will be the} lowest-energy distortion mechanism at play, as {they are|they’re|they may be} the only distortion {to be|to become} switched off with {increasing|growing|escalating|rising} temperature. Electrochemically, the material operates as a K-ion cathode {with a|having a|using a} {high|higher} operating voltage, and an {improved|enhanced} initial capacity relative to higher-vacancy PBA {alternatives|options}. On charging, K+ ions are selectively removed from a single K-ion channel {type|kind|sort|variety|form} {and the|and also the|as well as the|along with the|plus the} slide distortions are {again|once more|once again} switched on and off accordingly. We {discuss|talk about|go over} the functional {importance|significance|value} of {various|numerous|different|a variety of|several|many} {aspects|elements} of structural complexity {in this|within this} {system|method|program|technique}, {placing|putting} our discussion {in the|within the|inside the} context of other {related|associated|connected} PBAs. Ethyl 5-bromo-2-methylnicotinate web Formula of 82409-02-7 PMID:24487575
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