Anionic T‐Shaped Platinum(0) Pincer Complexes and Platinum(I) Intermediates in Radical Reactions With Alkyl Halides
Abstract
ABSTRACT Two anionic T‐shaped d 10 platinum(0) complexes supported by a sterically demanding carbazole‐based PNP ligand were obtained by reduction of a platinum(II) chloride precursor and characterized as contact ion aggregates 2‐Na and 2‐Mg with the Na + and [MgCl(thf) 2 ] + counterions, respectively. Reactions with organyl bromides produced the homocoupled hydrocarbons and the platinum(II) bromide and alkyl species, depending on the stability of the generated radicals. In situ EPR spectroscopic studies allowed the detection of the transient T‐shaped 15‐electron platinum(I) metalloradical (g iso = 2.219 and a hyperfine coupling (HFC) interaction with a 195 Pt atom A iso of 2124 MHz) involved in the sequential single‐electron transfer steps.
Article Details
Authors (7)
Vincenz J. Kohler
Anorganisch‐Chemisches Institut Ruprecht‐Karls‐Universität Heidelberg Heidelberg Germany
Julia Rößling
Anorganisch‐Chemisches Institut Ruprecht‐Karls‐Universität Heidelberg Heidelberg Germany
Tim M. Diederich
Anorganisch‐Chemisches Institut Ruprecht‐Karls‐Universität Heidelberg Heidelberg Germany
Joachim Ballmann
Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 276, D-69120 Heidelberg, Germany
Regine Herbst‐Irmer
Institut für Anorganische Chemie Georg‐August‐Universität Göttingen Göttingen Germany
Dietmar Stalke
Institut für Anorganische Chemie
Lutz H. Gade
Anorganisch‐Chemisches Institut Ruprecht‐Karls‐Universität Heidelberg Heidelberg Germany