Synthesis and spectroscopic characterization of some new [tris(3,5-dimethyl-pyrazol)borato] molybdenum complexes

Abstract

öz Bu çalışmada, [MoTp*(0)Cİ2] [Tp* =Tris-(3, 5-dimetil-pirazol)borat] bileşiğinin toluen çözeltisinde p- ve m- anilin ligandlarıyla reaksiyonları incelenmiştir. Oluşan yeni binükleer oxo köprülü imido molybden (V) komplekslerinin [MoTp*(0)Cl](n-0)[MoTp*(Cl)(=NC6H4X)], (X = Cl, Br) and [MoTp*(0)Cl](jx-0) [MoTp*(Cl)(=NC6H4Y)], (Y = I, F) 'H-NMR, İR spektroskopisi ve kütle spektrometri yöntemleri ile yapılan aydınlatılmıştır. [MoTp*(0)Cl](u-0)[MoTp*(Cl)(=NC6H4X)]5 (p-X = Br) ve [MoTp*(0)Cl] (^ı-0)^IoTp*(Cl)(=NC6H4Y)], (m-Y = I, F) bileşiklerin yapıları X-ray' difraksiyon yöntemi ile de çözülmüştür.

ABSTRACT In this study, the new binuclear oxo bridged imido Mo(V) complexes [MoTp*(0)Cl](n-0)[MoTp*(Cl)(=NC6H4X)], (p-X = CI, Br) and [MoTp*(0)Cl](n-0) [MoTp*(Cl)(sNC6H4Y)]5 (m-Y = I, F) have been synthesized by the reaction oxo molybdenum (V) precursor [MoTp*(0)Cİ2]; [Tp* = Tris(3, 5-dimethyl-pyrazol)borato] with p- and m- functionalized anilines, H2NC6H4X and H2NC6H4Y (p-X = CI, Br; m- Y=I, F) in toluene solution. The complexes have been characterised by ^-NMR, IR spectroscopy and FAB- Mass spectrometry. The structures of [MoTp*(0)Cl](n-0)[MoTp*(Cl)(=NC6H4X)]5 (p-X = Br) and [MoTp*(0)Cl](^i-0)[MoTp*(Cl)(=NC6H4Y)], (m-Y = I, F) have been characterised by X-Ray diffaction method. IV