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Abstract <p>Polymorphism is an infrequent phenomenon in platinum group complexes. Surprisingly, we found a new monoclinic crystal modification (<i>C</i>2/<i>c</i>) of a relatively simple compound, platinum&#xa0;(II) acetate Pt<sub>4</sub>(OCOMe)<sub>8</sub> (<b>2</b>) (monoclinic <i>C</i>2/<i>c</i> (<b>2</b>), monoclinic <i>P</i>2<sub>1</sub>/<i>c</i> (<b>3</b>) and tetragonal <i>P</i>4<sub>3</sub>2<sub>1</sub>2 (<b>4</b>)). The polymorph was prepared by a novel synthetic protocol and structurally identified by single-crystal X-ray diffraction (SC-XRD) using synchrotron radiation X-ray source. Examination of the intermolecular interaction by Hirshfeld surface analysis of <b>2</b> and its comparison with another known polymorphs - monoclinic (<i>P</i>2<sub>1</sub>/<i>c</i>, <b>3</b>) and tetragonal (<i>P</i>4<sub>3</sub>2<sub>1</sub>2, <b>4</b>) ones, - as well as analysis of packaging motifs revealed the responsibility of weak interactions for their formation.</p>

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Hidden Complexity of a Simple Compound: Unexpected Polymorphism of Tetranuclear Platinum (II) Acetate Pt4(OCOMe)8

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • A. S. Popova,
  • A. D. Maximova,
  • D. R. Chernyavskiy,
  • N. V. Cherkashina,
  • M. V. Panina,
  • O. V. Sulimova,
  • E. A. Sosunov,
  • P. V. Dorovatovskii,
  • M. N. Vargaftik,
  • I. A. Yakushev

摘要

Abstract

Polymorphism is an infrequent phenomenon in platinum group complexes. Surprisingly, we found a new monoclinic crystal modification (C2/c) of a relatively simple compound, platinum (II) acetate Pt4(OCOMe)8 (2) (monoclinic C2/c (2), monoclinic P21/c (3) and tetragonal P43212 (4)). The polymorph was prepared by a novel synthetic protocol and structurally identified by single-crystal X-ray diffraction (SC-XRD) using synchrotron radiation X-ray source. Examination of the intermolecular interaction by Hirshfeld surface analysis of 2 and its comparison with another known polymorphs - monoclinic (P21/c, 3) and tetragonal (P43212, 4) ones, - as well as analysis of packaging motifs revealed the responsibility of weak interactions for their formation.