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Bu çalışmada. geçiş metallerinden nikel (II), kobalt (II), bakır (II) ve çinko (II) 'nin 1, 2, 3, 4 ve 6 mo! o-f enilendiamin (opd) içeren bazı kompleksleri sen tez lend i. Bu komplekslerin yapıları element analizi, İR, UV gibi spektrometrik yöntemlerle ve kantitatif analiz tayin yöntemleriyle aydınlatılmaya çalışıldı. opd 'nin 5 metal -opd mal oranı 1:2 ve 1:3 stokiyometrisine sahip komplekslerinde ikidisli ligand, 1.4 stokiyometrisine sahip komplekslerde hem tek hem de ikidisli ligand, isi ve 1.6 stokiyometrisine sahip komplekslerde ise tekdisli ligand olarak davrandığı qozlendi.ANAHTAR KELİMELER opd, metal kelat, metal koifipleks, nikel (II) klorür, bakır (II) klorür, kobalt (II) klorür, çinko (II) klorür In this work, some o-phenylenediamine (opd) complexes with transition metals like nickel (II), cobalt ( 1 1 ), cupper (II) and sine (II) containing 1,2, 3,4 and 6 molecules of opd were synthesed and characterised by elemental analysis, some spectroscopics methods such as IR, UV and quantitative analysis. It was found that in these complexes opd acts as monodentate or bidentate or both monodentate and bidentate ligands» If complex structure is 1.2 ( The ratio of mol of metal ion to mol of opd ) or Is 3 stochiometry, opd is bidentate ligand. In the 1.4 stochiometry opd is both unidentate and bidentate ligand. The complexes which have i si and 1.6 stochiometry opd acts as bidentate ligand.KEY WORDS s opd, metal chelate, metal complex, nickel (II) chloride, cupper (II) cholide, cobalt (II) chloride, sine (II) chloride 74