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The Structure and Characterization of [1,11-Bis(2-Hydroxybenzyl)-1,4,8,11-Tetraazaundecane]Iron(III) Perchlorate

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Abstract

The structure of an Fe(III) complex of reduced Schiff base is reported. The title compound, C21H30ClFeN4O6 (I), crystallizes in the monoclinic space group P21/n with cell constants: a = 9.988(2) Å, b = 20.430(5) Å, c = 11.415(3) Å, β = 105.480(4)°. It contains a six-coordinate FeN4O2 cation where the ligand is a reduced Schiff base resulting from the NaBH4 reduction of the condensation product between salicylaldehyde and 1,4,8,11-tetraazaundecane. Due to the increased flexibility of the saturated backbone of the ligand compared to the Schiff base from which it was synthesized, the complex adopts a trans-FeN4O2 conformation. There is extensive hydrogen bonding between the amine H atoms and the anion O atoms.

Index Abstract

The structure of an Fe(III) complex of reduced Schiff base is reported which adopts a trans-FeN4O2 conformation where the ligand is a reduced hexadentate Schiff base resulting from the NaBH4 reduction of the condensation product between salicylaldehyde and 1,4,8,11-tetraazaundecane.

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Acknowledgements

RJB wishes to acknowledge the Department of Defense (DoD-ONR) for partial funding to upgrade the diffractometer. YG would like to acknowledge the financial support of graduate students by the NIH MBRS program (through the Graduate School of Howard University) and the EPA GEM program and the Provost Office of Howard University for support with laboratory supplies.

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Authors and Affiliations

  1. Department of Chemistry, Howard University, 525 College Street NW, Washington, DC, 20059, USA

    Teshome B. Yisgedu, Yohannes T. Tesema, Yilma Gultneh & Ray J. Butcher

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  1. Teshome B. Yisgedu
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  2. Yohannes T. Tesema
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  3. Yilma Gultneh
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  4. Ray J. Butcher
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Correspondence to Ray J. Butcher.

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Yisgedu, T.B., Tesema, Y.T., Gultneh, Y. et al. The Structure and Characterization of [1,11-Bis(2-Hydroxybenzyl)-1,4,8,11-Tetraazaundecane]Iron(III) Perchlorate. J Chem Crystallogr 39, 315–319 (2009). https://doi.org/10.1007/s10870-008-9470-3

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  • DOI: https://doi.org/10.1007/s10870-008-9470-3

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