Two different crystal forms of cis-diamminebis(pyrazole)platinum(II) dinitrate

Ken Sakai, Akira Ishikura, Taro Tsubomura, Kazuko Matsumoto

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The crystal structures of cis-diamminebis(pyrazole)-platinum(II) dinitrate, cis-[Pt(NH3)2(C3H4N2)2](NO3)2, (1), and cis-diamminebis(pyrazole)platinum(II) dinitrate pyrazole solvate, cis-[Pt(NH3)2(C3H4N2)2](NO3)2.C 3H4N2, (2), have been determined by X-ray diffraction. Interestingly, compound (1) crystallizes in the centrosymmetric space group P21/n, while compound (2) somehow crystallizes in the non-centrosymmetric space group P21. In both (1) and (2), the two coordinated pyrazole planes are twisted with respect to the Pt coordination planes at angles of between 46.0 (9) and 60.5 (4)°. The free pyrazole molecule contained as a crystal solvent in compound (2) forms a strong hydrogen bond [2.82 (1) angstroms] with one of the two coordinated pyrazole ligands. In each crystal, the packing is electrostatically stabilized through hydrogen bonds formed between the nitrate O atoms and the ammine and pyrazole ligands.

Original languageEnglish
Pages (from-to)779-783
Number of pages5
JournalActa Crystallographica, Section C: Crystal Structure Communications
Issue numberPt 4
Publication statusPublished - Jan 1 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Biochemistry,Genetics and Molecular Biology


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