Acta Crystallographica Section C

Crystal Structure Communications

Volume 68, Part 12 (December 2012)


metal-organic compounds



fg3281 scheme

Acta Cryst. (2012). C68, m370-m376    [ doi:10.1107/S0108270112047452 ]

Low-dimensional compounds containing bioactive ligands. IV. Unusual ionic forms of 5-chloro­quinolin-8-ol

P. Vranec, I. Potocnák and P. Repovský

Abstract: Bis(5-chloro-8-hy­droxy­quinolinium) tetra­chloridopalladate(II), (C9H7ClNO)2[PdCl4], (I), catena-poly[dimethyl­ammonium [[di­chloridopalladate(II)]-[mu]-chlorido]], {(C2H8N)[PdCl3]}n, (II), ethyl­enediammonium bis­(5-chloro­quinolin-8-olate), C2H10N22+·2C9H5ClNO-, (III), and 5-chloro-8-hy­droxy­quinolinium chloride, C9H7ClNO+·Cl-, (IV), were synthesized with the aim of preparing biologically active complexes of PdII and NiII with 5-chloro­quinolin-8-ol (ClQ). Compounds (I) and (II) contain PdII atoms which are coordinated in a square-planar manner by four chloride ligands. In the structure of (I), there is an isolated [PdCl4]2- anion, while in the structure of (II) the anion consists of PdII atoms, lying on centres of inversion, bonded to a combination of two terminal and two bridging Cl- ligands, lying on twofold rotation axes, forming an infinite [-[mu]2-Cl-PdCl2-]n chain. The negative charges of these anions are balanced by two crystallographically independent protonated HClQ+ cations in (I) and by dimethyl­ammonium cations in (II), with the N atoms lying on twofold rotation axes. The structure of (III) consists of ClQ- anions, with the hy­droxy groups deprotonated, and centrosymmetric ethyl­ene­di­ammonium cations. On the other hand, the structure of (IV) consists of a protonated HClQ+ cation with the positive charge balanced by a chloride anion. All four structures are stabilized by systems of hydrogen bonds which occur between the anions and cations. [pi]-[pi] inter­actions were observed between the HClQ+ cations in the structures of (I) and (IV).

Formula: (C9H7ClNO)2[PdCl4], (C2H8N)[PdCl3], C2H10N22+·2C9H5ClNO- and C9H7ClNO+·Cl-


cmldisplay filedownload file

Chemical Markup Language (CML) file (7.3 kbytes)
[ doi:10.1107/S0108270112047452/fg3281IIIsup6.cml ]
Supplementary material


cmldisplay filedownload file

Chemical Markup Language (CML) file (3.3 kbytes)
[ doi:10.1107/S0108270112047452/fg3281IVsup7.cml ]
Supplementary material


Notes:

To open or display or play some files, you may need to set your browser up to use the appropriate software. See the full list of file types for an explanation of the different file types and their related mime types and, where available links to sites from where the appropriate software may be obtained.

The download button will force most browsers to prompt for a file name to store the data on your hard disk.

Where possible, images are represented by thumbnails.

 bibliographic record in  format

  Find reference:   Volume   Page   
  Search:     From   to      Advanced search

Copyright © International Union of Crystallography
IUCr Webmaster