In an article, author is Chen, Hsieh, once mentioned the application of 1945-84-2, Name is 2-Ethynylpyridine, molecular formula is C7H5N, molecular weight is 103.1213, MDL number is MFCD00041598, category is pyridine-derivatives. Now introduce a scientific discovery about this category, Safety of 2-Ethynylpyridine.
Predicting Stability Constants for Terbium(III) Complexes with Dipicolinic Acid and 4-Substituted Dipicolinic Acid Analogues using Density Functional Theory
The relative stability constants of Tb(III) complexes exhibiting binding to a series of 4-substituted analogues of dipicolinic acid (2,6-pyridinedicarboxylic acid) (DPA) were calculated using density functional theory (DFT) with the standard thermodynamic cycle. DFT calculations showed that the strengths of the stability constants were modified by the substituents in the following (decreasing) order: -NH2 > -OH similar to -CH2OH > -imidazole similar to -CI similar to -Br similar to -H > -F > -I, with the differences among them falling within one to two log units except for -NH2. Through population and structural analysis, we observed that the -NH2, -OH, -CH2OH, and halide substituents can donate electrons via resonance effect to the pyridine ring of DPA while inductively withdrawing electrons with different strengths, thus resulting in the different binding strengths of the 4-substituted DPAs to the Tb(III) ions. We believe that these observations possess utility not only in the ongoing development of luminescent probes for bioanalytical studies but also for more recent cross-industrial efforts to enhance reservoir surveillance capabilities using chemical tracers within the oil and gas sector.
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Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem