Calculation of Acidity Constants of Azo Dyes Derived 4-(Phenyldiazenyl)Benzene-1,3-Diol By Dft Method
Abstract
Bu çalışmada, 4-(phenyldiazenyl) benzene-1,3-diolden türetilmiş altı azo boyar maddenin asitlik sabitleri Gaussian09 [1] program (B3LYP/6-311++G(d,p)) (DFT metodu) ile hesaplanmıştır.[2]. Elde edilen teorik veriler deneysel verilerle kıyaslanmıştır [3].Daha sonra, bu moleküllerin proton alma ve verme merkezleri belirlenmiştir. ?lk protonlanmanın N1 azotu üzerinde olduğu (R2=0,9996 korelasyon sabiti) gösterilmiştir. ?lk deprotonlanma O1'e bağlı hidrojendendir (R2=0, 9957) ve ikinci deprotonlanma ise O1 ve O2'ye bağlı olan hidrojendendir (R2=0, 9715). Bu çalışma, 19 Ocak 2011 tarihinde kaybettiğimiz çalışma arkadaşımız Sayın Prof. Dr. Cemil Öğretir'e adanmıştır. In this study, all acidity constants of six azo dyes derived from 4-(phenyldiazenyl)benzene1,3-diol have been calculated by DFT method with Gaussian09 [1] program (B3LYP/6311++G(d,p)) [2].The theoretical data has compared with those of experimental ones [3]. Then, proton gain and loose centers of these molecules have been determined. It has been indicated that first protonation is on N1 nitrogen with correlation constant R2=0,9996. First deprotonation is on the hydrogen binding O1 with the correlation constants (R2=0, 9957) and second deprotonation is on the hydrogen binding O1 and O2 with R2=0, 9715 This work is dedicated to the memory of our colleague Dear Prof. Dr. Cemil Öğretir, who passed away on January 19, 2011.
Source
Journal of the Turkish Chemical Society, Section A: ChemistryVolume
2Issue
2URI
http://www.trdizin.gov.tr/publication/paper/detail/TWpJNU56RTRPQT09https://hdl.handle.net/11421/17899