Cited by 49Metal complexes synthesis and propertiesChemical and Physical Properties in Aqueous SolutionsInorganic and Organometallic Chemistry

Thermodynamic and spectroscopic study of copper( II )–glycyl- L -histidylglycine complexes in aqueous solution

Daniele, Pier G., Zerbinati, Orfeo, Zelano, Vincenzo, Ostacoli, Giorgio·1991·J. Chem. Soc., Dalton Trans.

Abstract

The complexes formed in aqueous solution by copper(II) with glycyl-L-histidylglycine (L–) have been extensively studied, by using potentiometry, calorimetry, visible spectrophotometry and circular dichroism techniques, with the aim of elucidating their type and probable structure. Only monomeric species are formed in the acidic range of pH ([CuL]+, [CuLH–1], [CuL2] and [CuL2H–1]–), while at higher pH (>8) polynuclear [Cu4L4H–6]4– is formed in addition to [CuLH–2]–. The interpretation of all the experimental data is strongly consistent with a structure involving three nitrogen atoms co-ordinated to copper(II) for [CuLH–1] and [CuL]+ and with the participation of a fourth nitrogen atom in [CuLH–2]– and [Cu4L4H–8]4–. In the tetrameric species very probably there is a dissociation of the N(1)-pyrrole hydrogen ion, with consequent formation of imidazolate bridges.

Integrity signals

Registry

Crossref · 10.1039/dt9910002711

Cites

15 of 15 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The assignment of the deprotonation to a water molecule instead of an imidazole N1 from another Cu(GHK) complex is rationalized by the lack of drastic changes of CD parameters expected upon formation of imidazole-bridged dimeric or tetrameric species.

    “The aforementioned assignment of the deprotonation to a water molecule instead of an imidazole N1 from another Cu(GHK) complex (with concomitant polynuclear species formation) is rationalized by the lack of drastic changes of CD parameters that would be expected upon formation of imidazole-bridged dimeric or tetrameric species [21,22,23].”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Daniele, P. G., Zerbinati, O., Zelano, V., & Ostacoli, G.
Venue
J. Chem. Soc., Dalton Trans.
Published
1991
Issue
10
Pages
2711-2715
ISSN
  • 1364-5447 (ISSN-L)
  • 0300-9246
OpenAlex
W2168119268
Cited by
49
References
15
Citations by year
2026: 1 · 2022: 2 · 2021: 1 · 2020: 3 · 2019: 3 · 2018: 6 · 2017: 1 · 2016: 1 · 2015: 1 · 2014: 1 · 2013: 4 · 2012: 1
FWCI
0.68
Type
journal article
Language
en
Open access
closed
Locations
Journal of the Chemical Society Dalton Transactions (publishedVersion)
Funders
Consiglio Nazionale delle Ricerche
Topics
  • Health Sciences › Medicine › Oncology › Metal complexes synthesis and properties
  • Physical Sciences › Chemical Engineering › Filtration and Separation › Chemical and Physical Properties in Aqueous Solutions
  • Physical Sciences › Chemistry › Organic Chemistry › Inorganic and Organometallic Chemistry
Keywords
copper(II) complexes, coordination chemistry, polynuclear copper complexes, complex stoichiometry, pH dependence, aqueous solutions, circular dichroism, potentiometric titration, calorimetry, visible spectrophotometry

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review