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A New Actinide Bis(Ketimide) Platform for the Construction of Multimetallic Complexes: Synthesis and Crystal Structure of (C5Me5)2Th[-N=C(C6H5)(2,2′:6′,2″-terpyridine)]2

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Abstract

The title compound (C5Me5)2Th[-N=C(Ph)(tpy)]2 (1) (Ph=C6H5, tpy=2,2′:6′,2″-terpyridine) was synthesized and characterized by NMR spectroscopy, elemental analysis, and X-ray crystallography. This system represents the first example of an actinide complex featuring ketimide ligands with both a phenyl group and a terpyridyl group. The complex crystallizes in the monoclinic space group P21/c with unit cell parameters a = 10.7037(6) Å, b = 32.0735(16) Å, c = 34.6506(18) Å, β = 90.127(3)°, V = 11895.7(11) Å3, Z = 8, D calc = 1.406 Mg/m3. The thorium(IV) complex adopts a pseudo-tetrahedral geometry, with the two ketimide ligands occupying the plane bisecting the metallocene unit. Structural comparisons of the title complex are made with related metallocene thorium(IV) bis(ketimide) derivatives.

Graphical Abstract

This report describes the synthesis of (C5Me5)2Th[-N=C(Ph)(tpy)]2 (Ph=C6H5, tpy=2,2′:6′,2″-terpyridine) and its characterization by NMR spectroscopy, elemental analysis, and X-ray crystallography.

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Acknowledgments

For financial support of this work, we acknowledge the Division of Chemical Sciences, Office of Basic Energy Science, Heavy Element Chemistry program and the Los Alamos National Laboratory LDRD program.

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  1. Los Alamos National Laboratory, Mail Stop J514, Los Alamos, NM, 87545, USA

    Brian L. Scott & Jaqueline L. Kiplinger

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  1. Brian L. Scott
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  2. Jaqueline L. Kiplinger
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Correspondence to Jaqueline L. Kiplinger.

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Scott, B.L., Kiplinger, J.L. A New Actinide Bis(Ketimide) Platform for the Construction of Multimetallic Complexes: Synthesis and Crystal Structure of (C5Me5)2Th[-N=C(C6H5)(2,2′:6′,2″-terpyridine)]2 . J Chem Crystallogr 41, 1301–1304 (2011). https://doi.org/10.1007/s10870-011-0091-x

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  • DOI: https://doi.org/10.1007/s10870-011-0091-x

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