Trinuclear nickel(II) complex through a 2,3,5,6-tetrakis(2-pyridyl)pyrazine ligand with a linear exchange pathway

Inorg Chem. 2010 Jun 21;49(12):5353-5. doi: 10.1021/ic100562e.

Abstract

The compound [Ni(3)(tppz)(2)(NCS)(2)(H(2)O)(4)](NO(3))(4).4H(2)O [tppz = 2,3,5,6-tetrakis(2-pyridyl)pyrazine and NCS = thiocyanate ligand] consists of trimeric units, where the three Ni(II) cations are linked by two bis-tridentate tppz ligands. This compound crystallizes in the monoclinic space group C2/c, with Z = 4, a = 25.1116(12) A, b = 10.8127(5) A, c = 25.2294(13) A, and beta = 116.856(5) degrees . The crystal structure is in good agreement with the antiferromagnetic interactions because of unidirectional coupling through the tppz ligands.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Crystallography, X-Ray
  • Ligands
  • Models, Molecular
  • Molecular Structure
  • Nickel / chemistry*
  • Organometallic Compounds / chemical synthesis
  • Organometallic Compounds / chemistry*
  • Pyrazines / chemistry*

Substances

  • 2,3,5,6-tetrakis(2-pyridyl)pyrazine
  • Ligands
  • Organometallic Compounds
  • Pyrazines
  • Nickel