Synthesis and Characterization of Structurally Diverse Alkaline-Earth Salen Compounds for Subterranean Fluid Flow...

Area of Science:

• Coordination Chemistry
• Materials Science

Background:

• Salen-derivatives are versatile ligands in coordination chemistry.
• Monitoring subterranean fluid flow is crucial for resource management and environmental studies.

Purpose of the Study:

• To synthesize and characterize novel magnesium and calcium salen-derivatives.
• To evaluate their potential as taggants for subterranean fluid flow monitoring.

Main Methods:

• Synthesis of Mg and Ca complexes with various salen ligands.
• Characterization using single-crystal X-ray diffraction, Fourier transform infrared, and resonance Raman spectroscopies.
• Evaluation of stability under high temperature and pressure, mineral surface interactions, and elution behavior.

Main Results:

• Successfully synthesized and structurally characterized several Mg and Ca salen-complexes.
• Compounds 2-7 exhibited distinct spectral fingerprints via FTIR and resonance Raman spectroscopy.
• Demonstrated good stability and favorable interaction/elution properties for subterranean applications.

Conclusions:

• The synthesized Mg and Ca salen-derivatives are promising candidates for subterranean fluid flow monitoring.
• Their unique spectral properties and stability make them suitable for use as taggants.