Počet záznamů: 1  

Polyhedral Platinaborane Chemistry. Interaction of PMe2Ph with [((PMePh)-Ph-2)(2)PtB10H12]

  1. 1.
    0381705 - ÚACH 2013 RIV US eng J - Článek v odborném periodiku
    Bould, Jonathan - Císařová, I. - Kennedy, J.D.
    Polyhedral Platinaborane Chemistry. Interaction of PMe2Ph with [((PMePh)-Ph-2)(2)PtB10H12].
    Organometallics. Roč. 31, č. 7 (2012), s. 2691-2696. ISSN 0276-7333. E-ISSN 1520-6041
    Grant CEP: GA ČR(CZ) GAP207/11/1577; GA ČR(CZ) GAP207/11/0705
    Výzkumný záměr: CEZ:AV0Z40320502
    Klíčová slova: NUCLEAR-MAGNETIC-RESONANCE * OXIDATIVE-INSERTION REACTIONS * CLUSTER CHEMISTRY * METALLAHETEROBORANE CHEMISTRY
    Kód oboru RIV: CA - Anorganická chemie
    Impakt faktor: 4.145, rok: 2012

    In solution, [(PMe2Ph)(2)PtB10H12] (1) and PMe2Ph exist in dynamic equilibrium with [(PMe2Ph)(3)PtB10H12] (2). The activation energy for the dynamic process, Delta G(double dagger), is ca. 63 kJ mol(-1) at +17 degrees C, with Delta S being ca. 335 J mol(-1) deg(-1) and Delta H ca. 105 kJ mol(-1) for the equilibrium. At low temperatures a rocking fluxionality of the {Pt(PMe2Ph)(3)} unit versus the {eta(4)-B10H12} unit in 2 becomes apparent, with an activation energy Delta G(double dagger) of ca. 28 kJ mol(-1) at ca. -105 degrees C. Compound 2 is characterized by NMR spectroscopy and by a single-crystal X-ray diffraction analysis, for which the results suggest that, in contrast to the common view, the extra electron pair gained by the metal-atom center in going from 1 to 2 does not disrupt the cluster electron count proper nor the observed nido electronic structure and geometry.
    Trvalý link: http://hdl.handle.net/11104/0212114

     
     
Počet záznamů: 1  

  Tyto stránky využívají soubory cookies, které usnadňují jejich prohlížení. Další informace o tom jak používáme cookies.