Quantum chemical computational studies on 4-(1-Aminoethyl)pyridine

Yıl 2021, , 751 - 760, 31.08.2021

Hatice Vural

https://doi.org/10.18185/erzifbed.906280

Öz

The density functional theory (DFT) method combined with B3LYP and B3PW91 hybrid functional were utilized for geometrical optimization, vibrational frequencies and electronic spectral study. The B3LYP and B3PW91 levels of the time dependent-DFT with 6–311+G(d, p) basis set have been used to determine the highest occupied molecular orbital (HOMO) – the lowest unoccupied molecular orbital (LUMO) energies, absorption wavelengths, and electronic properties (total energy and energy gap) of 4-(1-aminoethyl)pyridine. Global reactivity descriptors like ionization potential, chemical hardness and electron affinity, etc. have been estimated using the B3LYP/6–311+G (d, p) and B3PW91/6–311+G (d, p) methods. The effect of the solvent has been simulated using the integral equation formalism-polarized continuum model (IEF-PCM).

Anahtar Kelimeler

4-(1-aminoethyl)pyridine, DFT, Solvent effect, Energy

4-(1-Aminoetil)piridin’in Kuantum Kimyasal Hesaplamaları Üzerine Çalışmalar

Öz

Geometrik optimizasyonu, titreşim frekansları ve elektronik spektral çalışma için yoğunluk fonksiyonel teorisinin (DFT) B3LYP ve B3PW91 hibrit fonksiyonelleri kullanıldı. 4-(1-aminoetil) piridin’in en yüksek dolu moleküler orbital (HOMO) ve en düşük boş moleküler orbitallerin (LUMO) enerjileri, absorbsiyon dalga boylarının ve elektronik özelliklerinin (toplam enerji, enerji aralığı vb.) hesaplanmasında zamana bağlı-DFT ile B3LYP ve B3PW91 ve 6–311+G(d, p) baz seti kullanıldı. İyonizasyon potansiyeli, kimyasal sertlik ve elektron afinitesi gibi global reaktiflik tanımlayıcıları B3LYP/6–311+G (d, p) ve B3PW91/6–311+G (d, p) yöntemleri kullanılarak tahmin edilmiştir. Çözücü etkisi zamana bağlı yoğunluk fonksiyonel teorisine sürekli polarizasyon modeli (IEF-PCM) uygulanarak hesaplandı.

Anahtar Kelimeler

DFT, enerji, 4-(1-aminoetil)pridin, çözücü etkisi

Kaynakça

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