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Cyanide-Bridged Polynuclear and One-Dimensional FeIII-MnIII/II Bimetallic Complexes Based-on Pentacyanoferrite(III) Building Block: Synthesis, Crystal Structures, and Magnetic Properties

Xiaoyun Hao, Yong Dou, Tong Cao, Lan Qin, Zhen Zhou, Lu Yang, Dacheng Li, Qingyun Liu, Yueyun Li, Daopeng Zhang

Abstract


In this contribution, based-on the structurally confirmed pentacyanometallate (PPh4)2[Fe(CN)5(imidazole)]·(imidazole)·H2O (1) and the manganese compounds [Mn(L)(H2O)2]ClO4 (L = N,N-ethylenebis(3-methoxysalicylideneiminate) or [Mn(MAC)(H2O)Cl]ClO4 (MAC = 2,13-dimethyl-3,6,9,12,18-pentaazabicyclo-[12.3.1]octadeca-1(18),2,12,14,16-

pentaene), two new cyanide-bridged bimetallic FeIII-MnIII/II complexes {[Mn(L)(H2O)]3[Fe(CN)5(imidazole)]}(ClO4) (2) and {[Mn(MAC)][Fe(CN)5(imidazole)]·CH3OH}n (3) were successfully synthesized and characterized by elemental analysis, IR spectroscopy and X-ray structure determination. Single X-ray diffraction analysis reveals the cationic FeMn3 tetranuclear entity for complex 2, which can be further assembled into supramolecular 1D ladder-like double chain by the strong intermolecular hydrogen bond interactions. For complex 3, it can be structurally characterized as neutral one-dimensional linear single infinite chain. The magnetic investigations discover the ferromagnetic coupling between the FeIII-MnIII units in complex 2 and the antiferromagnetic coupling in complex 3 between the FeIII-MnII units through the bridging cyanide group, respectively.


Keywords


Pentacyanoferrite; Cyanide-bridged; Crystal structure; Magnetic property

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DOI: http://dx.doi.org/10.17344/acsi.2020.5909

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Copyright (c) 2020 Xiaoyun Hao, Yong Dou, Tong Cao, Lan Qin, Zhen Zhou, Lu Yang, Dacheng Li, Qingyun Liu, Yueyun Li, Daopeng Zhang

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