High-Nuclearity Metal–Organic Nanospheres: A Cd66 Ball
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American Chemical Society
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Abstract
Reaction of H3L with Cd(NO3)2·4H2O in DMF at 150 °C for 3 days affords the metal–organic nanosphere [Cd66(μ3-OH)28(μ3-O)16(μ5-NO3-O,O,O′,O′,O″,O″)12(L)20(μ2-DMF)12⊂(DMF)9]. The cluster is composed of a spherical shell of 66 Cd(II) cations bridged by 28 μ3-hydroxide, 16 μ3-oxo, and five μ5-NO3– anions surrounded by a shell of 20 tripodal capping ligands (L) and 12 DMF ligands. The 66 Cd(II) cations and 12 NO3– anions form a polydeltahedron that has 78 vertices [Cd(II) or NO3–] (V), 228 edges (E), and 152 triangular faces (F), giving it an Euler characteristic (χ) of 2 (χ = V + F – E). Reaction of H3L with Cd(NO3)2·4H2O at lower temperatures or with CdCl2 affords coordination polymer frameworks instead of nanospheres.
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This document is the unedited author’s version of a submitted work that was subsequently accepted for publication in Journal of the American Chemical Society, copyright © 2011 American Chemical Society after peer review. To access the final edited and published work see https://doi.org/10.1021/ja207845u
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Argent, S.P., Greenaway, A., Gimenez-Lopez, M. C., Lewis, W., Nowell, H., Khlobystov, A. N., Blake, A. J., Champness, N. R., Schröder, M. (2012). High-Nuclearity Metal–Organic Nanospheres: A Cd66 Bal. "Journal of the American Chemical Society". vol. 134, 1, 55–58
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https://doi.org/10.1021/ja207845uSponsors
This work was supported by the ERC, the EPSRC, and the University of Nottingham. M.S. gratefully acknowledges an ERC Advanced Grant and an EPSRC Programme Grant. N.R.C. gratefully acknowledges a Royal Society Leverhulme Trust Senior Research Fellowship and a Royal Society Wolfson Merit Award. We thank Victoria J. Richards for help in determining network topologies using TOPOS, (25) Dr. Sihai Yang for collecting XRPD data, and Dr. Graham Rance for assistance with DLS measurements. We also acknowledge the EPSRC National Service for Mass Spectrometry at the University of Swansea for assistance in mass spectrometric analysis and Diamond Light Source for access to Beamline I19.
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