Synthetic, crystallographic, and computational study of copper(II) complexes of ethylenediaminetetracarboxylate ligands

Zoran D. Matović, Vesna D. Miletić, Marina Ćendić, Auke Meetsma, Petra J. Van Koningsbruggen, Robert J. Deeth

Research output: Contribution to journalArticle

Abstract

Copper(II) complexes of hexadentate ethylenediaminetetracarboxylic acid type ligands Heda3p and Heddadp (Heda3p = ethylenediamine-N-acetic-N,N',N'-tri-3-propionic acid; H eddadp = ethylenediamine-N,N'-diacetic-N,N'-di-3- propionic acid) have been prepared. An octahedral trans(O) geometry (two propionate ligands coordinated in axial positions) has been established crystallographically for the Ba[Cu(eda3p)]·8HO compound, while Ba[Cu(eddadp)]·8HO is proposed to adopt a trans(O ) geometry (two axial acetates) on the basis of density functional theory calculations and comparisons of IR and UV-vis spectral data. Experimental and computed structural data correlating similar copper(II) chelate complexes have been used to better understand the isomerism and departure from regular octahedral geometry within the series. The in-plane O-Cu-N chelate angles show the smallest deviation from the ideal octahedral value of 90°, and hence the lowest strain, for the eddadp complex with two equatorial ß-propionate rings. A linear dependence between tetragonality and the number of five-membered rings has been established. A natural bonding orbital analysis of the series of complexes is also presented.
Original languageEnglish
Pages (from-to)1238-1247
Number of pages10
JournalInorganic Chemistry
Volume52
Issue number3
DOIs
Publication statusPublished - 18 Jan 2013

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ethylenediamine
Copper
propionic acid
Propionates
Ligands
chelates
copper
ligands
Geometry
geometry
rings
Acetic Acid
Density functional theory
acetates
Acetates
density functional theory
deviation
orbitals
acids
Acids

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Matović, Zoran D. ; Miletić, Vesna D. ; Ćendić, Marina ; Meetsma, Auke ; Van Koningsbruggen, Petra J. ; Deeth, Robert J. / Synthetic, crystallographic, and computational study of copper(II) complexes of ethylenediaminetetracarboxylate ligands. In: Inorganic Chemistry. 2013 ; Vol. 52, No. 3. pp. 1238-1247.
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Synthetic, crystallographic, and computational study of copper(II) complexes of ethylenediaminetetracarboxylate ligands. / Matović, Zoran D.; Miletić, Vesna D.; Ćendić, Marina; Meetsma, Auke; Van Koningsbruggen, Petra J.; Deeth, Robert J.

In: Inorganic Chemistry, Vol. 52, No. 3, 18.01.2013, p. 1238-1247.

Research output: Contribution to journalArticle

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T1 - Synthetic, crystallographic, and computational study of copper(II) complexes of ethylenediaminetetracarboxylate ligands

AU - Matović, Zoran D.

AU - Miletić, Vesna D.

AU - Ćendić, Marina

AU - Meetsma, Auke

AU - Van Koningsbruggen, Petra J.

AU - Deeth, Robert J.

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