Half‐sandwich ruthenium complexes with
<scp>S</scp>
chiff base ligands bearing a hydroxyl group: Preparation, characterization and catalytic activities
作者:Wei‐Guo Jia、Zhi‐Bao Wang、Xue‐Ting Zhi
DOI:10.1002/aoc.5289
日期:2020.1
Three half‐sandwichruthenium(II) complexes with hydroxyl group functionalized Schiff‐base ligands [Ru(p‐cymene)LCl] (2a‐2c) have been synthesized and characterized. All rutheniumcomplexes were fully characterized by 1H and 13C NMR spectra, mass spectrometry and infrared spectrometry. The molecular structure of rutheniumcomplex 2c was confirmed by single‐crystal X‐ray diffraction methods. Furthermore
合成并表征了三种具有羟基官能化席夫碱配体[Ru(p- cymene)LCl](2a-2c)的半三明治钌(II)配合物。所有钌络合物均通过1 H和13 C NMR光谱,质谱和红外光谱进行了全面表征。钌配合物2c的分子结构已通过单晶X射线衍射法确定。此外,发现这些半三明治钌络合物在室温下在水中有十六烷基三甲基溴化铵(CTAB)的情况下,使用NaBH 4还原剂对硝基化合物的还原显示出高催化活性。
Triphenylphosphinopalladium(II) complexes with ONO-donor ligands: syntheses, structures and catalytic applications in CC cross-coupling reactions
作者:Rupesh Narayana Prabhu、G. Narendra Babu、Samudranil Pal
DOI:10.1002/aoc.3544
日期:2017.1
diffraction analysis. In each complex, the fused 5,6‐membered chelate rings forming phenolate‐O, azomethine‐N and naphtholate‐O donor (Ln)2− and the PPh3 form a square‐planar ONOP coordination environment around the metal centre. Infrared and NMR spectroscopic features of 1, 2, 3 are consistent with their molecular structures. Electronic spectra of the three complexes display several strong primarily ligand‐centred
Towards a global greener process: from solvent-less synthesis of molybdenum(<scp>vi</scp>) ONO Schiff base complexes to catalyzed olefin epoxidation under organic-solvent-free conditions
characterised by means of IR spectroscopy, thermal analyses and also by powder and five molybdenum complexes by single crystal X-ray diffraction. The crystalstructure analysis of mononuclear complexes reveal distorted octahedral Mo(VI) coordination by ONO donor atoms from a dianionic tridentate Schiffbaseligand, two oxido oxygen atoms from the MoO22+ moiety and an oxygen atom from the MeOH molecule trans