Bis-tetradentate complexes of Cd(ii) and Hg(ii) with N8 coordination: Structural and NMR comparisons

Edith V. Bowers, Geoffrey S. Murphy, Stephanie N. Till, Christopher VandenBussche, Melissa M. Yaroschak, Robert D. Pike, Raymond J. Butcher, Deborah C. Bebout

Research output: Contribution to journalArticle

Abstract

Tripodal N4 ligands tris[(1-methylimidazol-2-yl)methyl]amine (L1), bis[(1-methylimidazol-2-yl)methyl][(2-pyridyl)methyl]amine (L2) and [(1-methylimidazol-2-yl)methyl]-bis-[(2-pyridyl)methyl]amine (L3) were used to prepare five new [ML2](ClO4)2 (M = Cd(ii), Hg(ii)) complexes. All complexes had N8 metal coordination and a trans-bicapped octahedral structure as determined by X-ray crystallography. Metal-nitrogen bond distances generally decreased in the order M-Namine > M-Npyridyl > M-Nimidazoyl, and the perchlorates were well separated from the metal ions. Variable temperature solution state 1H NMR spectroscopy revealed conditions for slow intramolecular reorganization were more readily accessible for the Cd(ii) complexes than for the Hg(ii) complexes. Both protons of imidazoyl ring ligand components had large, comparable J(199Hg1H) despite sizable differences in nuclear separation.

Original languageEnglish (US)
Pages (from-to)16475-16485
Number of pages11
JournalDalton Transactions
Volume43
Issue number43
DOIs
StatePublished - Nov 21 2014
Externally publishedYes

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Amines
Metals
Nuclear magnetic resonance
Perchlorates
Ligands
X ray crystallography
X Ray Crystallography
Nuclear magnetic resonance spectroscopy
Metal ions
Protons
Magnetic Resonance Spectroscopy
Nitrogen
Ions
Temperature
1-methylimidazole
perchlorate
Proton Magnetic Resonance Spectroscopy
2,2'-dipyridylamine

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Medicine(all)

Cite this

Bowers, E. V., Murphy, G. S., Till, S. N., VandenBussche, C., Yaroschak, M. M., Pike, R. D., ... Bebout, D. C. (2014). Bis-tetradentate complexes of Cd(ii) and Hg(ii) with N8 coordination: Structural and NMR comparisons. Dalton Transactions, 43(43), 16475-16485. https://doi.org/10.1039/c4dt02435d

Bis-tetradentate complexes of Cd(ii) and Hg(ii) with N8 coordination : Structural and NMR comparisons. / Bowers, Edith V.; Murphy, Geoffrey S.; Till, Stephanie N.; VandenBussche, Christopher; Yaroschak, Melissa M.; Pike, Robert D.; Butcher, Raymond J.; Bebout, Deborah C.

In: Dalton Transactions, Vol. 43, No. 43, 21.11.2014, p. 16475-16485.

Research output: Contribution to journalArticle

Bowers, EV, Murphy, GS, Till, SN, VandenBussche, C, Yaroschak, MM, Pike, RD, Butcher, RJ & Bebout, DC 2014, 'Bis-tetradentate complexes of Cd(ii) and Hg(ii) with N8 coordination: Structural and NMR comparisons', Dalton Transactions, vol. 43, no. 43, pp. 16475-16485. https://doi.org/10.1039/c4dt02435d
Bowers, Edith V. ; Murphy, Geoffrey S. ; Till, Stephanie N. ; VandenBussche, Christopher ; Yaroschak, Melissa M. ; Pike, Robert D. ; Butcher, Raymond J. ; Bebout, Deborah C. / Bis-tetradentate complexes of Cd(ii) and Hg(ii) with N8 coordination : Structural and NMR comparisons. In: Dalton Transactions. 2014 ; Vol. 43, No. 43. pp. 16475-16485.
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