The effect of magnetic field on the stability of (18-crown-6) complexes with potassium ion.

Talanta · 2004 · Harm · Insufficient evidence

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HarmInsufficient evidencePaper 3677

In conductometric measurements at 25±0.05 °C, the stability constants for 18-crown-6 complexes with potassium ion in water decreased in the presence of a magnetic field. The authors also report that the magnetic field influenced the ion, solvent, and ligand.

Study snapshot

PublicationTalanta · 2004

Study typeother

Reported directionHarm

Evidence ratingInsufficient

Abstract

Macrocyclic polyethers are ligands with selectivity for metal ions. In order to understand the interactions between ligand, ion and solvent we resorting to study of magnetic field effect on ion-macrocyclic complexes. Therefore, we studied the complexation between 18-crown-6 and potassium ion in water through the conductometry technique (in 25+0.05 degrees C) by a nonlinear least-square program (Genplot) under magnetic field. We observed that stability constants of complexes in the presence of the magnetic field, were decreased. Like-wise, we observed that, magnetic field influenced on ion, solvent and ligand one by one.

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeother

Effect directionharm

PopulationNot supplied

Sample sizeNot supplied

ExposureNot supplied

Evidence strengthInsufficientConfidence: 66% · Peer reviewed: yes

Main findings

Outcomes measured

Stability constants of 18-crown-6–potassium complexes in water (conductometry)

Limitations

Magnetic field characteristics (e.g., strength, frequency/type) not reported in the abstract
No sample size or replication details provided in the abstract
Study context is chemical complexation in solution; no biological/health outcomes reported

View raw extracted JSON

{
  "study_type": "other",
  "exposure": {
    "band": null,
    "source": "magnetic field",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Stability constants of 18-crown-6–potassium complexes in water (conductometry)"
  ],
  "main_findings": "In conductometric measurements at 25±0.05 °C, the stability constants for 18-crown-6 complexes with potassium ion in water decreased in the presence of a magnetic field. The authors also report that the magnetic field influenced the ion, solvent, and ligand.",
  "effect_direction": "harm",
  "limitations": [
    "Magnetic field characteristics (e.g., strength, frequency/type) not reported in the abstract",
    "No sample size or replication details provided in the abstract",
    "Study context is chemical complexation in solution; no biological/health outcomes reported"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "magnetic field",
    "18-crown-6",
    "potassium ion",
    "complexation",
    "stability constant",
    "conductometry",
    "water"
  ],
  "suggested_hubs": []
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1016/j.talanta.2004.02.039
PubMed: 18969640

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