AI Article Synopsis
- [(PhP)AuPt(nbe)][BAr] is the first formal complex containing both gold (Au) and platinum (Pt) alongside an olefin compound, norbornene (nbe).
- The coordination mode and electronic properties of this complex were explored using spectroscopy and computational methods.
- Due to the low binding energy of its nbe ligands, this complex shows potential as a precursor for creating AuPt compounds and could be useful in heterobimetallic catalysis.
Article Abstract
[(PhP)AuPt(nbe)][BAr] (nbe = norbornene) constitutes the first olefin-containing, formal AuPt complex. The unusual coordination mode and the electronic properties have been analyzed spectroscopically and by calculations. The low binding energy of the nbe ligands make this complex a valuable precursor for formal AuPt complexes and a candidate for heterobimetallic catalysis.
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Article Synopsis
- [(PhP)AuPt(nbe)][BAr] is the first formal complex containing both gold (Au) and platinum (Pt) alongside an olefin compound, norbornene (nbe).
- The coordination mode and electronic properties of this complex were explored using spectroscopy and computational methods.
- Due to the low binding energy of its nbe ligands, this complex shows potential as a precursor for creating AuPt compounds and could be useful in heterobimetallic catalysis.
Syntheses and structural analyses of variable-stoichiometric Au-Pt-Ni carbonyl/phosphine clusters, Pt3(Pt(1-x)Ni(x))(AuPPh3)2(mu2-CO)4(CO)(PPh3)3 and Pt2(Pt(2-y)Ni(y))(AuPPh3)2(mu2-CO)4(CO)2(PPh3)2, with ligation-induced site-specific Pt/Ni substitutional disorder within butterfly-based Pt3(Pt(1-x)Ni(x))Au2 and Pt2(Pt(2-y)Ni(y))Au2 core-geometries.
Dalton Trans
May 2006
University of Wisconsin-Madison, Department of Chemistry, 1101 University Avenue, Madison, WI 53706, USA.
In ongoing attempts of directed synthesis of high-nuclearity Au-Pt carbonyl/phosphine clusters with [Ni6(CO)12]2- used as reducing agent and CO source, we have isolated and characterized two new closely related variable-stoichiometric trimetallic clusters, Pt3(Pt(1-x)Ni(x))(AuPPh3)2(mu2-CO)4(CO)(PPh3)3 (1) and Pt2(Pt(2-y)Ni(y))(AuPPh3)2(mu2-CO)4(CO)2(PPh3)2 (2). Their M4Au2 cores may be envisioned as substitutional disordered butterfly-based M4Au2 frameworks (M = Pt/Ni) formed by connections of the two basal M(B) atoms with both (Au-Au)-linked Au(PPh3) moieties. Based upon low-temperature CCD X-ray diffraction studies of eight crystals obtained from different samples, ligation-induced site-specific Pt/Ni substitutional disorder (involving formal insertion of Ni in place of Pt) in a given crystal was found to occur only at the one OC-attached basal M(B) site in 1 or at both OC-attached basal M(B) sites in 2 corresponding to a crystal composite of the Pt3(Pt(1-x)Ni(x))Au2 core in 1 or of the Pt2(Pt(2-y)Ni(y))Au2 core in 2; the Ph3P-attached M(B) site (M(B) = Pt) in 1 and two wingtip M(w) sites (M(w) = Pt) in 1 and 2 were not substitutionally disordered.
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