pH-Specific synthetic chemistry, and spectroscopic, structural, electrochemical and magnetic susceptibility studies in binary Ni(II)-(carboxy)phosphonate systems

M. Menelaou, M. Dakanali, C. P. Raptopoulou, C. Drouza, N. Lalioti, A. Salifoglou

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Nickel can play numerous roles in biological systems and in advanced abiotic materials. Supporting the diverse roles of Ni(II) in biological media are, among others, metal ion binding amino acids, their variably phosphorylated forms and/or exogenously administered organophosphonate drug substrates. In an effort to comprehend the aqueous chemistry of interactions between Ni(II) and organophosphonate substrates, research efforts were launched involving the ligands imino bis(methylenephosphonic acid) (H4IDA2P), H2O3P-CH2-NH2 +-CH 2-PO3H-, and N-(phosphonomethyl)glycine (glyphosate-H3IDAP), HOOC-CH2-NH2 +-CH2-PO 3H-. pH-Specific reactions of Ni(II) with H4IDA2P and H3IDAP led to the isolation of [Ni(C2H8O6NP2)2(H 2O)2] (1) and [Ni(OOC-CH2-NH-CH2-PO3H)2] ·[Ni(H2O)6]·3.3H2O (2), respectively. Compound 1 was characterized by analytical, spectroscopic techniques (UV-Vis, FT-IR), cyclic voltammetry, magnetic susceptibility measurements and X-ray crystallography. Compound 2 was characterized by elemental analysis, FT-IR spectroscopy, and X-ray crystallography. The structures of 1 and 2 reveal mononuclear octahedral Ni(II) assemblies bound by H3IDA2P- and water (1), and glyphosate (HIDAP2-) and water molecules (2), respectively. Magnetic susceptibility studies on 1 support the presence of high-spin octahedral Ni(II) in an oxygen environment, consistent with X-ray crystallography. The collective physicochemical features of the discrete Ni(II) assemblies in both species (a) shed light on aqueous binary Ni(II)-phosphoderivative interactions potentially influencing cellular physiology or toxicity, and (b) define the fundamental properties essential for the employment of such species in advanced materials synthesis and applications.

Original languageEnglish (US)
Pages (from-to)3331-3339
Number of pages9
JournalPolyhedron
Volume28
Issue number15
DOIs
StatePublished - Oct 13 2009

Fingerprint

glyphosate
Organophosphonates
X ray crystallography
Magnetic susceptibility
crystallography
chemistry
magnetic permeability
assemblies
Amino acids
sheds
physiology
x rays
Water
Physiology
Biological systems
Substrates
glycine
Nickel
toxicity
water

Keywords

  • Binary interactions
  • Magnetic susceptibility
  • Ni(II)-(carboxy)phosphonate species
  • pH-Specific synthesis
  • X-ray structure

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

pH-Specific synthetic chemistry, and spectroscopic, structural, electrochemical and magnetic susceptibility studies in binary Ni(II)-(carboxy)phosphonate systems. / Menelaou, M.; Dakanali, M.; Raptopoulou, C. P.; Drouza, C.; Lalioti, N.; Salifoglou, A.

In: Polyhedron, Vol. 28, No. 15, 13.10.2009, p. 3331-3339.

Research output: Contribution to journalArticle

Menelaou, M. ; Dakanali, M. ; Raptopoulou, C. P. ; Drouza, C. ; Lalioti, N. ; Salifoglou, A. / pH-Specific synthetic chemistry, and spectroscopic, structural, electrochemical and magnetic susceptibility studies in binary Ni(II)-(carboxy)phosphonate systems. In: Polyhedron. 2009 ; Vol. 28, No. 15. pp. 3331-3339.
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AU - Drouza, C.

AU - Lalioti, N.

AU - Salifoglou, A.

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