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Phenylamido and Diphenylamido Complexes of Chromium(II)

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Abstract

Addition LiNHPh to a [(NacNac)Cr(μ-I)]2 [NacNac = 2,4 pentane-N-N′-bis(2,6-diisopropylphenyl) ketiminato] in THF yields a dimeric anilido complex, 1, that crystallizes in P21/n with unit cell parameters a = 13.390(2) Å, b = 26.298(5) Å, c = 21.326(4) Å, β = 93.905(4)°, V = 7492(2) Å3 and Z = 4. The same reaction in the presence of aniline yields a monomeric anilido complex, 2, with a coordinated aniline molecule. Complex 2 crystallizes in P2 1 /c with unit cell parameters a = 28.530(5) Å, b = 10.8116(18) Å, c = 26.492(5) Å, β = 115.685(3)°, V = 7364(2) Å3 and Z = 8. Addition of aniline to isolated 1 yields 2. Addition of LiNPh2 to [(NacNac)Cr(μ-I)]2 in THF yields a monomeric complex that crystallizes in P21/n with the unit cell parameters a = 11.152(6) Å, b = 23.820(12) Å, c = 17.915(9) Å, β = 106.223(9)°, V = 4569(4) Å3 and Z = 4. All complexes have been spectroscopically and structurally characterized.

Graphical Abstract

Addition of LiNHPh or LiNPh2 to [(NacNac)Cr(μ-I)]2 yields a dimeric or a monomeric complex whereas addition of LiNHPh in the presence of aniline yields the monomeric anilido complex.

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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, 19711, 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. Phenylamido and Diphenylamido Complexes of Chromium(II). J Chem Crystallogr 39, 535–538 (2009). https://doi.org/10.1007/s10870-009-9571-7

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