The new [Pt-13(CO)(12){Cd-5(mu-Br)(5)Br-2(dmf)(3)}(2)](2-) and [Pt-19(CO)(17){Cd-5(mu-Br)(5)Br-3(Me2CO2)}{Cd-5(mu-Br)(5)Br(Me2CO)(4)}](2-) clusters have been obtained in good yields by reaction of [Pt-12(CO)(24)](2-) with CdBr2 center dot H2O in dmf at 90 degrees 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(mu-Br)(5)Br5-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.
C. Femoni, M. C. Iapalucci, G. Longoni, S. Zacchini, S. Zarra (2011). Icosahedral Pt-Centered Pt13 and Pt19 Carbonyl Clusters Decorated by [Cd5(-Br)5Br5-x(solvent)x]x+ Rings Reminiscent of the Decoration of Au-Fe-CO and Au-Thiolates Nanoclusters: A Unifying Approach to Their Electron Counts. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 133, 2406-2409 [10.1021/ja111235v].
Icosahedral Pt-Centered Pt13 and Pt19 Carbonyl Clusters Decorated by [Cd5(-Br)5Br5-x(solvent)x]x+ Rings Reminiscent of the Decoration of Au-Fe-CO and Au-Thiolates Nanoclusters: A Unifying Approach to Their Electron Counts
FEMONI, CRISTINA;IAPALUCCI, MARIA CARMELA;LONGONI, GIULIANO;ZACCHINI, STEFANO;
2011
Abstract
The new [Pt-13(CO)(12){Cd-5(mu-Br)(5)Br-2(dmf)(3)}(2)](2-) and [Pt-19(CO)(17){Cd-5(mu-Br)(5)Br-3(Me2CO2)}{Cd-5(mu-Br)(5)Br(Me2CO)(4)}](2-) clusters have been obtained in good yields by reaction of [Pt-12(CO)(24)](2-) with CdBr2 center dot H2O in dmf at 90 degrees 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(mu-Br)(5)Br5-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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
