Anahtar Kelimeler: DHP, monastrol, TCNQ, TCNE, DDQ, I2 ve yük transferkompleksler.Bu çalışmanın amacı; Dihidropiridin ve 3,4-dihidropirimidin?2-on bileşiklerininelektron donor akseptör komplekslerinin nasıl oluşturduğunu incelemektir. Elektronakseptör olan TCNE, DDQ, pikrik asit ve I2 ile elektron donorlar olan DHP veMonastrol' ün elektron donor akseptör kompleksleri Spektrofotometrik olarakincelendi. Kompleks stokiometrileri Job Metodu, komplekslerin denge sabitleriBenesi-Hildebrand denklemi ve Termodinamik sabitleri Van't Hoff denklemi ilehesaplandı.DHP -TCNE Kompleksi 500 nm de maksimum absorbans verdi. Kompleksin dengesabiti 184.162 L mol?1, termodinamik sabitleri ?H: -4404.17 cal. mol-1, ?S: -14.3cal. mol?1, ?Go: -3036.2 cal. mol?1 dir. DHP ?Pikrik Asit Kompleksi 495 demaksimum absorbans verdi. Kompleksin denge sabiti 12.346 L mol?1, termodinamiksabitleri ?H: -1906.34 cal. mol-1, ?S: -4.891 cal. mol?1, ?Go: -1463.1 cal. mol?1 dir.Monastrol-DDQ Kompleksi 546 nm de maksimum absorbans vermiştir. Kompleksindenge sabiti 45.95 L mol?1, termodinamik sabitleri ?H: -588,39 cal. mol?1, ?S: -4.59cal. mol?1, ?Go: -2228.1 cal. mol?1 dir. Monastrol-TCNQ Kompleksi 742 nm demaksimum absorbans verdi. Kompleksin denge sabiti 491.4 L mol?1, termodinamiksabitleri ?H: -3619.1 cal. mol-1, ?S: -15.406 cal. mol?1, ?Go: -3607 cal. mol?1 dir.Monastrol- I2 Kompleksi 370 nm de maksimum absorbans vermiştir. Kompleksindenge sabiti 625 L mol?1, termodinamik sabitleri ?H: -221.50 cal. mol?1, ?S: -5.19cal. mol?1, ?Go: -3747.5 cal. mol?1 dir.
Key Words: DHP, Monastrol, TCNQ, TCNE, DDQ, I2 ve yük transfer chargetransfer complexes.The purpose of this study is to examine how Dihydropiridine ve 3,4-dihydropirimidin?2-on. Electron donor acceptor complexes of DHP and Monastrolas electron donors with TCNE, DDQ, picric acid and I2 as electron acceptors havebeen examined spectrophotometricly. Stoichiometries of the complexes weredetermined by Job?s method. Equilibrium constants of the complexes were calculatedby Benesi-Hildebrand equation. Thermodynamic constants of the complexes werecalculated by Van?t Hoff equation.EDA complexes of DHP ?TCNE gave a maximum absorption at 500 nm.Equilibrium constant of the complex is 184.162 L mol?1, thermodynamic constants ofthe complex; ?H: -4404.17 cal. mol?1, ?S: -14.3 cal. mol?1, ?Go: -3036.2 cal. mol?1.EDA complexes of DHP ?Picric Asid gave a maximum absorption at 495 nm.Equilibrium constant of the complex is 12.346 L mol?1, thermodynamic constants ofthe complex; ?H: -1906.34 cal. mol-1, ?S: -4.891 cal. mol?1, ?Go: -1463.1 cal. mol?1.EDA complexes of Monastrol-DDQ gave a maximum absorption at 546 nm.Equilibrium constant of the complex is 12.346 L mol?1, thermodynamic constants ofthe complex; ?H: -588,39 cal. mol?1, ?S: -4.59 cal. mol?1, ?Go: -2228.1 cal. mol?1.EDA complexes of Monastrol-TCNQ gave a maximum absorption at 742 nm.Equilibrium constant of the complex is 12.346 L mol?1, thermodynamic constants ofthe complex; ?H: -3619.1 cal. mol-1, ?S: -15.406 cal. mol?1, ?Go: -3607 cal. mol?1.EDA complexes of Monastrol-TCNQ gave a maximum absorption at 370 nm.Equilibrium constant of the complex is 625 L mol?1, thermodynamic constants of thecomplex; ?H: -221.50 cal. mol?1, ?S: -5.19 cal. mol?1, ?Go: -3747.5 cal. mol?1 dir.
