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Synthesis and Structure of (TMEDA)Cr(I)2(THF) and [(N,N-DMEDA)2CrI] I

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Abstract

The complexes (TMEDA)Cr(I)2(THF) (1) and [(N,N-DMEDA)2CrI] I (2) were synthesized and spectroscopically characterized (TMEDA = tetramethylethylenediamine, N,N-DMEDA = N,N dimethylethylenediamine). Complex 1 possesses square pyramidal geometry and crystallizes in spacegroup Pbca with crystal cell parameters a = 11.206(2) Å, b = 12.698(3) Å, c = 23.434(5) Å, V = 3,334.6(12) Å3 and Z = 4. Complex 2 also possesses square pyramidal geometry with a non-coordinated iodide counter anion and crystallizes in spacegroup P21/n with crystal cell parameters a = 9.4071(13) Å, b = 14.628(2) Å, c = 11.7516(16) Å, β = 98.904(2) Å°, V = 1,597.6(4) Å3 and Z = 4. Complex 2 has previously been incorrectly assigned as an octahedral complex based on spectroscopy.

Graphical Abstract

The title compounds were synthesized and determined to have square pyramidal geometries. The second compound has been previously incorrectly assigned as an octahedral complex based on spectroscopy.

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Acknowledgments

This research was supported by NSF (CHE-0616375) and DOE (DE-FG02-92ER14273).

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Authors and Affiliations

  1. Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA

    Wesley H. Monillas, Glenn P. A. Yap & Klaus H. Theopold

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  1. Wesley H. Monillas
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  2. Glenn P. A. Yap
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  3. Klaus H. Theopold
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Correspondence to Glenn P. A. Yap.

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Monillas, W.H., Yap, G.P.A. & Theopold, K.H. Synthesis and Structure of (TMEDA)Cr(I)2(THF) and [(N,N-DMEDA)2CrI] I. J Chem Crystallogr 39, 842–845 (2009). https://doi.org/10.1007/s10870-009-9617-x

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