Intermolecular hydrogen-bonding in the solid-state structure of CpFe(CN)2(PTAH)
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The salt K[CpFe(CN)2PTA] (1) has been synthesized from the photolysis of K[CpFe(CN)2CO] and 1,3,5-triaza-7-phosphaadamantane (PTA) in methanol. Protonation of the salt by hydrogen ion exchange employing DOWEX 50 WX8-100 ion exchange resin yielded the complex CpFe(CN)2PTAH (2). The solid-state structures of both compounds have been determined by X-ray crystallography. Protonation was shown via v(CN) and 31P-NMR to occur at one of the PTA nitrogens. Furthermore, it was found in the solid-state of the protonated structure that intermolecular hydrogen-bonding occurs between the cyanide nitrogen of one molecule and the PTA nitrogen of another molecule. The average Fe-CCN distance for 1 is 1.877(11) . Fe-CCN distances for complex 2 differ significantly at 1.839(12) and 1.940(12) , with the shorter bond length associated with the hydrogen-bonded CN group. Spectral (v(CN) and 31P-NMR) characterization of the complexes and their potential use as precursors to double metal cyanide derivatives are reported. 2002 Elsevier Science B.V. All rights reserved.
Journal of Organometallic Chemistry
author list (cited authors)
Darensbourg, D. J., Phelps, A. L., Adams, M. J., & Yarbrough, J. C.
complete list of authors
Darensbourg, Donald J||Phelps, Andrea L||Adams, M Jason||Yarbrough, Jason C