Used as a deuterated reagent in NMR spectroscopy to study reaction mechanisms and molecular structures where hydrogen atoms may interfere. Its deuterated form enhances signal clarity by reducing background noise from proton signals. Commonly employed in coordination chemistry as a ligand in metal complexes, especially in catalysis and photophysical studies, where isotopic labeling helps track electron transfer processes and improve spectral resolution. Also utilized in kinetic and mechanistic investigations of organometallic reactions due to its stability and distinct isotopic signature.