Acta Cryst. (2003). E59, m411-m413  [ doi:10.1107/S1600536803011541 ]

[-2,3,5,6-Tetrakis(2-pyridyl)pyrazine]bis[chloroplatinum(II)] bis[trichloro(dimethyl sulfoxide-S)platinate(II)]

K. Sakai and M. Kurashima

Abstract: A reaction of cis-PtCl₂(DMSO)₂ (DMSO = dimethyl sulfoxide, C₂H₆OS) with 2,3,5,6-tetrakis(2-pyridyl)pyrazine (tpp, C₂₄H₁₆N₆) gave the title salt, [Pt₂Cl₂(-tpp)][PtCl₃(DMSO)]₂. The compound consists of a dinuclear Pt cation, [Pt₂Cl₂(-tpp)]²⁺, and two [PtCl₃(DMSO)]^- anions. The two Pt atoms within the cation are separated by a distance of 6.4792  (17)  Å, and their coordination planes are canted at an angle of 19.6  (9)°. The shortest intermolecular PtPt distance is 4.5726  (16)  Å. Metal-metal interactions are unimportant in the crystal structure, and the packing is stabilized by extensive - interactions between the tpp moieties, in addition to ionic interactions.

Online 10 June 2003

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