Synthesis, molecular and crystal structure of bis(triethanolamine)manganese(II) saccharinate: A seven-coordinate manganese complex with tri- and tetradentate triethanolamine ligands

Topcu Y., Andaç Ö., YILMAZ V. T., Harrison W. T.

Journal of Molecular Structure, vol.610, no.1-3, pp.99-103, 2002 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 610 Issue: 1-3
  • Publication Date: 2002
  • Doi Number: 10.1016/s0022-2860(02)00014-5
  • Journal Name: Journal of Molecular Structure
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.99-103
  • Keywords: Crystal structures, Mn(II)complexes, Monocapped trigonal prism, Seven-coordination, Triethanolamine complexes
  • Ondokuz Mayıs University Affiliated: Yes


The synthesis, molecular and crystal structure of bis(triethanolamine)Mn(II) saccharinate, [Mn(tea)2](sac)2 are reported. The configuration of the tea ligands results in an unusual example of coordination number seven for the Mn(II) ion. The two triethanolamine (tea) ligands coordinate to the Mn(II) ion forming a monocapped trigonal prism geometry, in which one of the tea ligands behaves as a tridentate ligand, while the other one acts as a tetradentate donor. The free and coordinated hydroxyl hydrogens of the tea ligands are involved in hydrogen bonding with the amine nitrogen, carbonyl and sulfonyl oxygens of the neighbouring sac ions to form a three-dimensional infinite network. A weak π-π interaction between the phenyl rings of the sac ions also occurs. © 2002 Elsevier Science B.V. All rights reserved.