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

Ken Sakai, Akira Ishikura, Taro Tsubomura, Kazuko Matsumoto

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

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
Volume52
Issue numberPt 4
DOIs
Publication statusPublished - Jan 1 1996

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Platinum
Crystals
Hydrogen
Hydrogen bonds
Ligands
pyrazole
X-Ray Diffraction
Nitrates
Crystal structure
X ray diffraction
Atoms
Molecules

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Two different crystal forms of cis-diamminebis(pyrazole)platinum(II) dinitrate. / Sakai, Ken; Ishikura, Akira; Tsubomura, Taro; Matsumoto, Kazuko.

In: Acta Crystallographica, Section C: Crystal Structure Communications, Vol. 52, No. Pt 4, 01.01.1996, p. 779-783.

Research output: Contribution to journalArticle

Sakai, Ken ; Ishikura, Akira ; Tsubomura, Taro ; Matsumoto, Kazuko. / Two different crystal forms of cis-diamminebis(pyrazole)platinum(II) dinitrate. In: Acta Crystallographica, Section C: Crystal Structure Communications. 1996 ; Vol. 52, No. Pt 4. pp. 779-783.
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AB - 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.

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