Synthesis and Characterization of Octacyano-Fe-Phthalocyanine

Octacyano-metal-phthalocyanine MPc(CN)8 is a promising n-type stable organic semiconductor material with eight cyano groups, including strong electron-withdrawing group at its molecular terminals. However, thorough investigation of has not yet been conducted. Therefore, we synthesized FePc(CN)8 and investigated crystal structure, chemical electronic states, electrical properties, photocatalytic activity, magnetic properties. In this paper, discuss the various properties in comparison those FePc. X-ray diffraction measurements indicated that structure was strongly influenced by groups differed from α- β-forms The space P4/mcc similar to x-form LiPc. ultraviolet–visible (UV–vis) absorption spectrum observed wavelengths longer than Density functional theory-based orbital calculations energy gap smaller FePc, which can lead observation Q-band UV–vis Because wider optical band visible region activity approximately four times higher conductivity also due larger overlap π-electron clouds molecules FePc(CN)8. Magnetic revealed exists an antiferromagnetic ground state. are specific direct exchange interactions between Fe2+ ions π-electron-mediated interactions. particular, Pauli paramagnetic behavior high temperatures low (Weiss temperature θ = −4.3 ± 0.1 K) characteristic π–d system.