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Type: Artigo de periódico
Title: Selective formation of a triangulo-irondiplatinum cluster
Author: Ursini, CV
Dias, GHM
Gambardella, MTP
Santos, RHA
Abstract: The trinuclear platinum cluster [Pt-3(mu-CNBut)(3)(CNBut)(3)] reacts selectively with the monodentate dppm-iron complex [Fe(dppm-P)(CO)(4)] (1:1 or 2:1 ratios of Pt:Fe) [dppm = bis(diphenylphosphino)methane], to give the mixed-metal cluster [FePt2(mu-dppm)(CNBut)(2)(CO)(4)]. A single-crystal X-ray diffraction study established the structure of an isosceles triangular FePt2 core with short Pt-Pt [2.5756(5) Angstrom], Fe-Pt(1) [2.559(2) Angstrom] and Fe-Pt(2) [2.565(3) Angstrom] bond lengths, and with the two platinum atoms bridged by the dppm ligand. Cell data: monoclinic, P2(1)/n, a = 11.031(1) Angstrom, b = 20.593(3) Angstrom, c = 18.129(2) Angstrom, beta = 91.32(1) degrees, D-c (Z = 4) = 1.789 mg m(-3). Least-squares refinement based on 4171 reflections converged to a final R = 0.0508 and R-w = 0.0558. The IR and NMR spectra (H-1, C-13-{H-1}, P-31-{H-1}, and Pt-195-{H-1}) of the cluster are also reported and discussed.
Subject: trinuclear irondiplatinum cluster
ligand transfer
Country: Brasil
Editor: Soc Brasileira Quimica
Rights: aberto
Date Issue: 1997
Appears in Collections:Unicamp - Artigos e Outros Documentos

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