High-Nuclearity Metal鈥揙rganic Nanospheres: A Cd66 Ball

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• 作者：Stephen P. Argent ; Alex Greenaway ; Maria del Carmen Gimenez-Lopez ; William Lewis ; Harriott Nowell ; Andrei N. Khlobystov ; Alexander J. Blake ; Neil R. Champness ; Martin Schr枚der
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：January 11, 2012
• 年：2012
• 卷：134
• 期：1
• 页码：55-58
• 全文大小：313K
• 年卷期：v.134,no.1(January 11, 2012)
• ISSN：1520-5126

文摘

Reaction of H₃L with Cd(NO₃)₂路4H₂O in DMF at 150 掳C for 3 days affords the metal鈥搊rganic nanosphere [Cd₆₆(渭³-OH)₂₈(渭³-O)₁₆(渭⁵-NO₃-O,O,O鈥?O鈥?O鈥?O鈥?₁₂(L)₂₀(渭²-DMF)₁₂(DMF)₉]. The cluster is composed of a spherical shell of 66 Cd(II) cations bridged by 28 渭³-hydroxide, 16 渭³-oxo, and five 渭⁵-NO₃^{鈥?/sup> anions surrounded by a shell of 20 tripodal capping ligands (L) and 12 DMF ligands. The 66 Cd(II) cations and 12 NO₃鈥?/sup> anions form a polydeltahedron that has 78 vertices [Cd(II) or NO₃鈥?/sup>] (V), 228 edges (E), and 152 triangular faces (F), giving it an Euler characteristic (蠂) of 2 (蠂 = V + F 鈥?E). Reaction of H₃L with Cd(NO₃)₂路4H₂O at lower temperatures or with CdCl₂ affords coordination polymer frameworks instead of nanospheres.}