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catena-Poly[[[diaqua(nitrato-κ2O,O′)(2,2′:6′,2′′-terpyridine-κ3N,N′,N′′)ytterbium(III)]-μ-cyanido-κ2N:C-[dicyanidoplatinum(II)]-μ-cyanido-κ2C:N] acetonitrile monosolvate]

Author(s): Philip A. Smith | Milorad Stojanovic | Richard E. Sykora

Journal: Acta Crystallographica Section E
ISSN 1600-5368

Volume: 66;
Issue: 12;
Start page: m1619;
Date: 2010;
Original page

The title compound, {[PtYb(CN)4(NO3)(C15H11N3)(H2O)2]·CH3CN}n, was isolated from solution as a one-dimensional coordination polymer. The Yb3+ site has ninefold coordination with a distorted tricapped trigonal–prismatic geometry, while the PtII ion is coordinated by four cyanide groups in an almost regular square-planar geometry. cis-Bridging by the tetracyanidoplatinate(II) anions links the Yb3+ cations, forming chains. Additionally, each Yb3+ is coordinated by two water molecules, one bidentate nitrate anion, and one tridentate 2,2′:6′,2′′-terpyridine molecule. O—H...N hydrogen-bonding interactions are found between adjacent chains and help to consolidate the crystal packing. In addition, π–π stacking interactions exist between the terpyridine ligand and the two corresponding terpyridine ligands along the adjacent chain (average interplanar distance = 3.667 Å). Moderate Pt...Pt interactions [3.5033 (4) Å] are observed in the structure.
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