Tuning the formal potential of ferrocyanide over a 2.1 V range.

ABSTRACT: We report the synthesis and characterization of homoleptic borane adducts of hexacyanoferrate(ii). Borane coordination blueshifts d-d transitions and CN IR and Raman frequencies. Control over redox properties is established with respect to borane Lewis acidity, reflected in peak anodic potential shifts per borane of +250 mV for BPh₃ and +350 mV for B(C₆F₅)₃. Electron transfer from [Fe(CN-B(C₆F₅)₃)₆]^4- to photogenerated [Ru(2,2'-bipyridine)₃]³⁺ is very rapid, consistent with voltammetry data. Coordination by Lewis acids provides an avenue for selective modification of the electronic structures and electrochemical properties of cyanometalates.

SUBMITTER: McNicholas BJ 

PROVIDER: S-EPMC6430091 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature