PlumX Metrics
Embed PlumX Metrics

Capped-tetrahedrally coordinated Fe(II) and Co(II) complexes using a "click"-derived tripodal ligand: Geometric and electronic structures

Inorganic Chemistry, ISSN: 0020-1669, Vol: 51, Issue: 14, Page: 7592-7597
2012
  • 52
    Citations
  • 0
    Usage
  • 19
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

Article Description

Figure Persented: The 'Click'-derived tripodal ligand tris[(1-benzyl-1H-1, 2,3-triazole-4-yl)methyl]amine, tbta, was used to synthesize the complexes [Fe(tbta)Cl]BF , 1, and [Co(tbta)Cl]BF , 2. Both complexes were characterized by H NMR spectroscopy and elemental analysis. Single-crystal X-ray structural determination of 2 shows a 4 + 1 coordination around the cobalt(II) center with a rather long bond between Co(II) and the central amine nitrogen atom of tbta. Such a coordination geometry is best described as capped tetrahedral. 1 and 2 are thus the first examples of pseudotetrahedral coordinated Fe(II) and Co(II) complexes with tbta. A combination of SQUID susceptometry, EPR spectroscopy, Mössbauer spectroscopy, and DFT calculations was used to elucidate the electronic structures of these complexes and determine the spin state of the metal center. Comparisons are made between the complexes presented here with related complexes of other ligands such as tris(2-pyridylmethyl)amine, tmpa, hydrotris(pyrazolyl) borate, Tp, and tris(2-(1-pyrazolyl)methyl)amine, amtp. 1 and 2 were tested as precatalysts for the homopolymerization of ethylene, and both complexes delivered distinctly different products in this reaction. Blind catalyst runs were carried out with the metal salts to prove the importance of the tripodal ligand for product formation. © 2012 American Chemical Society.

Bibliographic Details

Schweinfurth, David; Demeshko, Serhiy; Khusniyarov, Marat M; Dechert, Sebastian; Gurram, Venkatanarayana; Buchmeiser, Michael R; Meyer, Franc; Sarkar, Biprajit

American Chemical Society (ACS)

Chemistry

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know