3 years ago

Polyoxometalate-Assisted, One-Pot Synthesis of a Pentakis[(triphenylphosphane)gold]ammonium(2+) Cation Containing Regular Trigonal-Bipyramidal Geometries of Five Bonds to Nitrogen

Polyoxometalate-Assisted,
One-Pot Synthesis of a Pentakis[(triphenylphosphane)gold]ammonium(2+)
Cation Containing Regular Trigonal-Bipyramidal Geometries of Five
Bonds to Nitrogen
Sho Shimazaki, Toshiaki Matsubara, Kenji Nomiya, Satoshi Matsunaga, Shogo Horie, Yuichi Murata, Shinya Sato, Kohei Endo, Takuya Yoshida, Eri Nagashima, Yuta Yasuda
A one-pot synthesis of the [(phosphane)gold]ammonium(2+) cation (1), {[Au(PPh3)]55-N)}2+, as a countercation of the polyoxometalate (POM) anions in reasonable yields was performed by the reaction of the Keggin POMs, H3[α-PM12O40nH2O (M = W, Mo) with the phosphanegold(I) carboxylate complex [Au(RS-pyrrld)(PPh3)] [RS-Hpyrrld = (RS)-2-pyrrolidone-5-carboxylic acid] in the presence of aqueous NH3. The Keggin POMs play an important role in the one-pot synthesis and in determining the molecular structure of the pentacoordinate, two-electron-deficient bonding species of the ammonium(2+) cation (1).

Publisher URL: http://dx.doi.org/10.1021/acs.inorgchem.7b02795

DOI: 10.1021/acs.inorgchem.7b02795

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