Chemical Activity Calculations with Density Functional Theory of 2-chloro-1-(6-flouro-3,4-dihydro-2H-chromen-2-yl)ethanone

Abstract

In this study, the 2-chloro-1-(6-flouro-3,4-dihydro-2H-chromen-2yl)ethanone molecule which was synthesized and whose structure was illuminated by X-ray diffraction method in previously study was determined by chemical activity, second order nonlinear optical properties and interactions with DNA bases were investigated. Density functional theory was chosen as the theoretical method because of it is significant values close to experimental and its computational cost. There is no imaginary frequencies was observed as a result of the frequency calculations also supported the optimized structure and thus other properties were obtained and interpreted from the optimized structure. The stable molecular geometry of the studied molecule was obtained by optimization. DFT/B3LYP/6-311++G(d,p) bases set was used in all theoretical calculations. It was seen that the geometric parameter values of the optimized molecule were compatible with the experimental data and thus other properties obtained through the optimized structure were calculated and interpreted. In the calculation of the chemical activity of the molecule, hardness, softness and other chemical activity parameters were obtained by frontier molecular orbital (HOMO, LUMO) energies. Molecular electrostatic potential (MEP), charge population and Fukui functional analaysis was determined in which regions the structure is susceptible to chemical interactions. Inaddition to these, molecular interactions, Hirshfeld surface maps, interaction percentages of atoms with each other (2D-finger print) were examined by Hirshfeld surface analysis.

Keywords

• DFT
• chemical activity
• Hirshfeld surface analysis
• DNA bases

2-kloro-1-(6-floro-3,4-dihidro-2H-kromen-2yl)ethanon Yapısının Yoğunluk Fonksiyonel Kuramı İle Kimyasal Aktivite Hesaplamaları

Abstract

Bu çalışmada, sentezi yapılmış ve X-ışını kırınımı yöntemi ile yapısı aydınlatılmış 2-kloro-1-(6-floro-3,4-dihidro-2H-kromen-2yl) ethanon molekülünün kimyasal aktivitesi, ikinci dereceden lineer olmayan optik özellikleri ve DNA bazları ile etkileşimi üzerine kuramsal çalışmalar yapılmıştır. Kuramsal yöntem olarak, deneysel çalışmalara yakın ve anlamlı değerler vermesi ayrıca hesapsal maliyeti nedeniyle Yoğunluk Fonksiyonel Kuramı (YFK) seçildi. Çalışılan molekülün kararlı moleküler geometrisi optimizasyon yapılarak elde edildi. Tüm kuramsal hesaplamalarda YFK/B3LYP/6-311++G(d,p) baz seti kullanıldı. Optimize edilmiş molekülün geometrik parametre değerlerinin deneysel verilerle uyumlu olduğu görüldü. Frekans hesaplamaları sonucunda sanal frekans verisinin gözlenmemesi de yapının başarılı olarak optimize edildiğini destekledi. Böylece optimize yapı üzerinden elde edilen diğer özellikler hesaplanarak yorumlandı. Molekülün kimyasal aktivitesinin hesaplanmasında sınır moleküler orbital (HOMO, LUMO) enerjileri kullanılarak sertlik, yumuşaklık ve diğer kimyasal aktivite parametreleri elde edildi. Moleküler elektrostatik potansiyel (MEP), yük popülasyon ve Fukui fonsiyon analizleri ile yapının hangi bölgelerde kimyasal etkileşime yatkın olduğu belirlendi. Bunların yanı sıra Hirshfeld yüzey analizi ile moleküler etkileşimler, Hirshfeld yüzey haritaları, atomların birbirleriyle etkileşim yüzdeleri 2 boyutlu-parmak izi tayini ile incelendi.

Keywords

• YFK
• kimyasal aktivite
• Hirshfeld yüzey analizi
• DNA bazları

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