A Mössbauer, Magnetic, and Single-crystal X-ray Structural Study of Trans-bis(4-acetylpyridine)diaquobis(isothiocyanato)iron(II)
The single-crystal X-ray structure of trans-bis(4-acetylpyridine)diaquobis(isothiocyanato)iron(II) reveals an all-trans pseudooctahedral coordination geometry. The acetyl oxygen atoms are not coordinated but are hydrogen bonded to the water molecules in an adjacent molecule. The thiocyanate anion is coordinated through the nitrogen atom in an essentially linear fashion. An intermolecular hydrogen bond connects the coordinated water oxygen to the 4-acetylpyridine oxygen. The iron(II) to coordinated nitrogen and oxygen bond distances are typical of high-spin iron(II) and are consistent with magnetic studies, which reveal paramagnetic behavior down to 4.2 K. The high-spin electronic configuration is also confirmed by the optical spectrum and by Mössbauer spectral studies, which indicate a negative quadrupole interaction and a typical high-spin(II) isomer shift. This is the first reported complex with three different ligands coordinated to a high-spin iron(II) ion. © 1983 American Chemical Society.
G. J. Long et al., "A Mössbauer, Magnetic, and Single-crystal X-ray Structural Study of Trans-bis(4-acetylpyridine)diaquobis(isothiocyanato)iron(II)," Inorganic Chemistry, American Chemical Society (ACS), Jan 1983.
The definitive version is available at https://doi.org/10.1021/ic00145a027
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© 1983 American Chemical Society (ACS), All rights reserved.