Dioxidomolybdenum(VI) complexes bearing sterically constrained aroylazine ligands: Synthesis, structural investigation and catalytic evaluation
作者:Sudarshana Majumder、Sagarika Pasayat、Satabdi Roy、Subhashree P. Dash、Sarita Dhaka、Mannar R. Maurya、Martin Reichelt、Hans Reuter、Krzysztof Brzezinski、Rupam Dinda
DOI:10.1016/j.ica.2017.09.043
日期:2018.1
substituted aromatic aldehydes/ketones. All the synthesized ligands and metal complexes were successfully characterized by elemental analysis, IR, UV–Vis and NMR spectroscopy. X-ray structures of 1 – 6 revealed that the ligands coordinate to the metal center as a dibasic tridentate ligand. Cyclic voltammetry of the complexes shows two irreversible reductive responses within the potential window −0.50 to −1.36 V
摘要七个新的二氧化钼(VI)络合物[MoO 2 L 1(X)]。X(1)和[MoO 2 L 2-7(X)](2-7)[其中X = EtOH,分别为1和5分离出X = DMSO,在2 – 4和6的情况下,7 []含有大的3-羟基-2-萘取代基的芳香酰嗪被分离并进行结构表征。芳嗪配体H 2 L 1–7来自3-羟基-2-萘甲酸酰肼与几种取代的芳族醛/酮的缩合反应。所有合成的配体和金属络合物均已通过元素分析,IR,UV-Vis和NMR光谱法成功表征。1-6的X射线结构表明,配体作为二元三齿配体与金属中心配位。配合物的循环伏安法显示在电位窗口-0.50至-1.36 V内有两个不可逆的还原反应,由于采用了Mo VI / Mo V和Mo V / Mo IV工艺。合成的配合物1–7被用作安息香的氧化催化剂和水杨醛的氧化溴化反应(作为卤代过氧化物酶的功能模拟物)。结果发现,在含有庞大取代基的催化剂1–7的存