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二十面体中心 Pt 原子的 Pt13 和 Pt19 羰基簇被[Cd5(μ-Br)5Br(5-x)(溶剂)x]x+ 环所修饰，使人联想到 Au-Fe-CO 和 Au-硫醇盐纳米簇的修饰：一种统一的计算它们电子数的方法。

Icosahedral Pt-centered Pt13 and Pt19 carbonyl clusters decorated by [Cd5(μ-Br)5Br(5-x)(solvent)x]x+ rings reminiscent of the decoration of Au-Fe-CO and Au-thiolate nanoclusters: a unifying approach to their electron counts.

机构信息

Dipartimento di Chimica Fisica ed Inorganica, Università di Bologna, Bologna, Italy.

出版信息

J Am Chem Soc. 2011 Mar 2;133(8):2406-9. doi: 10.1021/ja111235v. Epub 2011 Feb 3.

DOI:10.1021/ja111235v
PMID:21291214
Abstract

The new Pt(13)(CO)(12){Cd(5)(μ-Br)(5)Br(2)(dmf)(3)}(2) and Pt(19)(CO)(17){Cd(5)(μ-Br)(5)Br(3)(Me(2)CO)(2)}{Cd(5)(μ-Br)(5)Br(Me(2)CO)(4)} clusters have been obtained in good yields by reaction of Pt(12)(CO)(24) with CdBr(2)·H(2)O in dmf at 90 °C and structurally characterized by X-ray diffraction. Their structures consist of a Pt-centered Pt(13)(CO)(12) icosahedron and a Pt(19)(CO)(17) interpenetrated double icosahedron, respectively, decorated by two Cd(5)(μ-Br)(5)Br(5-x)(solvent)(x) rings. Their surface decoration may be related to that of Au-Fe-CO clusters as well as to the staple motifs stabilizing gold-thiolates nanoclusters. An oversimplified and unifying approach to interpret their electron count is suggested.

摘要

新的Pt(13)(CO)(12){Cd(5)(μ-Br)(5)Br(2)(dmf)(3)}(2)和Pt(19)(CO)(17){Cd(5)(μ-Br)(5)Br(3)(Me(2)CO)(2)}{Cd(5)(μ-Br)(5)Br(Me(2)CO)(4)}簇通过在 90°C 的 dmf 中用 CdBr(2)·H(2)O 与Pt(12)(CO)(24)反应以高收率得到，并通过 X 射线衍射进行了结构表征。它们的结构分别由一个以 Pt 为中心的 Pt(13)(CO)(12)二十面体和一个 Pt(19)(CO)(17)互穿双二十面体组成，由两个 Cd(5)(μ-Br)(5)Br(5-x)(溶剂)(x)环装饰。它们的表面装饰可能与 Au-Fe-CO 簇以及稳定金硫醇纳米簇的订书钉基序有关。提出了一种过于简化和统一的方法来解释它们的电子计数。

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