A capped trigonal prismatic cadmium complex with tetra- and tridentate ligands: bis(triethanolamine)-kappa N-3,O,O ';kappa N-4,O,O ',O ''-cadmium(II) squarate monohydrate

Ucar I., YEŞİLEL O. Z., Bulut A., Icbudak H., Olmez H., Kazak C.

ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY, cilt.60, 2004 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 60
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1107/s0108270104013174
  • Dergi Adı: ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chimica, Compendex, EMBASE, INSPEC, MEDLINE
  • Eskişehir Osmangazi Üniversitesi Adresli: Hayır

Özet

In the crystal structure of the title compound, [Cd(C6H15NO3)(2)](C4O4).H2O, a supramolecular structure is observed. The asymmetric unit consists of one unit of the cationic Cd complex, one water molecule and two half-squarate anions, each sitting on a crystallographic inversion center. The different coordinations of the two triethanolamine (TEA) ligands results in an unusual example of coordination number seven for the Cd-II ion. Both TEA ligands coordinate to the Cd-II ion, forming a distorted monocapped trigonal prismatic geometry with approximate C-2nu symmetry. One of the TEA ligands acts as an N,O,O'-tridentate ligand, whereas the other behaves as an N,O,O',O"-tetradentate donor. The anions and cations are linked to one another by hydrogen bonds between hydroxy H atoms of the TEA ligands and squarate O atoms. The crystal structure is stabilized by O - H ... O hydrogen bonds between the unligated water molecule and a squarate O atom, together with a weak pi-ring interaction between the ethylene group of a TEA ligand and a squarate anion.