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Two New Mn(II) and Co(II) Complexes with the Tridentate 2,4,6-Tris(2-pyridyl)-1,3,5-triazine Ligand

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Two New Mn(II) and Co(II) Complexes with the Tridentate 2,4,6-Tris(2-pyridyl)-1,3,5-triazine Ligand

Arpi Majumdera, Chirantan Roy Choudhurya, Samiran Mitraa, Christoph Marschnerb, and Judith Baumgartnerb

aDepartment of Chemistry, Jadavpur University, Kolkata – 700 032, India

bInstitut f¨ur Anorganische Chemie, Technische Universit¨at Graz, Stremayrgasse 16, A-8010 Graz, Austria

Reprint requests to Prof. S. Mitra. Fax: 91-33-2414-6266. E-mail: smitra 2002@yahoo.com Z. Naturforsch. 60b, 99 – 105 (2005); received June 4, 2004

Two new complexes of manganese(II) and cobalt(II), [Mn(tptz)(OCH3CO)(H2O)2]ClO4 (1) and [Co(tptz) (OSO3) (H2O)2](H2O)2(2){where tptz = 2,4,6-tris(2-pyridyl)-1,3,5-triazine}, have been prepared and characterised by elemental analyses, spectroscopic, electrochemical studies and single crystal X-ray diffraction. Single crystal X-ray analysis reveals complexes of Mn(II) and Co(II), where tptz remains intact and behaves as a tridentate ligand and forms heptacoordinated Mn(II) and hexa- coordinated Co(II) complexes for 1 and 2, respectively.

Key words: Heptacoordinated Mn(II), Hexacoordinated Co(II), Tptz

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