A 3D open-framework iron hydrogenophosphate showing high proton conductance under water and aqua-ammonia vapor

Abstract

Herein we report the first example of the proton conductivity of an open-framework metal phosphate (NH3(CH2)3NH3)2–[Fe4(OH)3(HPO4)2(PO4)3]·4H2O under aqua-ammonia vapor.

The proton conduction behavior of two 1D open-framework metal phosphates with similar crystal structures and different hydrogen bond networks

“… 14 ) and (NH 3 (CH 2 ) 3 NH 3 ) 2 [Fe 4 (OH) 3 (HPO 4 ) 2 (PO 4 ) 3 ] . 4H 2 O 15 reached 0.8 × 10 −3 S cm −1 at 317 K and 99% RH.…”