Acta Cryst. (2004). E60, m664-m667  [ doi:10.1107/S1600536804009523 ]

Bis[-3-(N'-methyl-4,4'-bipyridinium-1-yl)propionamidato]bis[cis-diammineplatinum(II)] hexaperchlorate dihydrate: a head-to-tail isomer

K. Sakai, Y. Yokoyama, H. Hama, K. Kato, Y. Ikuta, T. Tsubomura and T. Tanase

Abstract: In the title compound, [Pt₂(-C₁₄H₁₆N₃O)₂(NH₃)₄](ClO₄)₆·2H₂O, the diplatinum(II) cation is found to be a head-to-tail isomer. The intradimer Pt-Pt distance [3.0304  (7)  Å] is much shorter than the value of 3.0852  (13)  Å reported for the analogous cis-diammineplatinum(II) dimer bridged by 2-(N'-methyl-4,4'-bipyridinium-1-yl)acetamidates [Sakai, Ikuta, Tsubomura, Kato, Yokoyama, Kajiwara & Ito (2003). Acta Cryst. E59, m780-m783], showing that the electron density at the metal centers is higher in the title system than in the previously reported system. The shortest interdimer PtPt distance is 8.4585  (8)  Å.

Online 30 April 2004

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