Acta Cryst. (2009). E65, m755  [ doi:10.1107/S1600536809021370 ]

Tripotassium bis(acetato-²O,O')(thiocyanato-N)plumbate(II) dithiocyanate

S. W. Ng

Abstract: In the crystal structure of the title salt, K₃[Pb(CH₃COO)₂(NCS)](NCS)₂, the [Pb(CH₃COO)₂(NCS)]^- anion exists as a covalently bonded entity in which the acetate anions chelate in an anisobidentate manner. The Pb atom shows a distorted -octahedral coordination to four acetate O atoms and one isocyanate N atom, with the stereochemically active lone pair occupying one of the six sites. When the three longer PbS interactions are considered, the eight-coordinate geometry is based on a dodecahedron. The Pb(CH₃COO)₂(NCS)]^- anion has mirror symmetry. The potassium cations connect the other constituents into a three-dimensional network through electrostatic KN and KS interactions.

Online 10 June 2009

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