Zusammenfassung
The crystal structure of Cs₂[Pt(CN)₄]•H₂O has been determined from X-ray diffraction data and refined to a conventional R value of 0.068 from 2210 reflections. The compound is hexagonal, a = 9.687(2) and c = 19.336(6) Å, space group C²₆-P6₁, Z = 6. The given atomic coordinates represent the absolut configuration. The nearly square planar [Pt(CN)₄]²⁻ groups from a helix with respect to the c axis. ...
Zusammenfassung
The crystal structure of Cs₂[Pt(CN)₄]•H₂O has been determined from X-ray diffraction data and refined to a conventional R value of 0.068 from 2210 reflections. The compound is hexagonal, a = 9.687(2) and c = 19.336(6) Å, space group C²₆-P6₁, Z = 6. The given atomic coordinates represent the absolut configuration. The nearly square planar [Pt(CN)₄]²⁻ groups from a helix with respect to the c axis. The distance between neighboring Pt atoms in the helix is 3.543(1) Å. The normal of the [Pt(CN)₄]²⁻ group is tilted about 15 deg to the c axis leading to a considerable overlap of metal orbitals which is suggested from optical emission studies. The protons of the water molecules form hydrogen bonds to nitrogen atoms of different helices. Both Cs atoms have similar sevenfold coordination.
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