Structural Studies of Mono‐ and Dimetallic Mo
<sup>VI</sup>
Complexes − A New Mechanistic Contribution in Catalytic Olefin Epoxidation Provided by Oxazoline Ligands
作者:José A. Brito、Montserrat Gómez、Guillermo Muller、Helena Teruel、Jean‐Claude Clinet、Elisabet Duñach、Miguel A. Maestro
DOI:10.1002/ejic.200400331
日期:2004.11
New seven-coordinate oxo(peroxo)molybdenum(VI) complexes with bidentate chiral oxazolines, anionic κ 2 -N,O (V) and neutral κ 2 -N,N (VI), have been prepared and fully characterised by NMR spectroscopy and single-crystal X-ray diffraction studies. Dimetallic dioxo(µ-oxo)molybdenum(VI) compounds containing oxazolinylpyridine ligands II−IV have also been synthesised. NMR studies showed the presence of
已制备出具有双齿手性恶唑啉、阴离子 κ 2 -N,O (V) 和中性 κ 2 -N,N (VI) 的新型七配位氧代(过氧)钼 (VI) 配合物,并通过 NMR 光谱和充分表征单晶 X 射线衍射研究。还合成了含有恶唑啉基吡啶配体 II-IV 的双金属二氧(μ-氧)钼(VI)化合物。NMR 研究表明,由于 Mo-O-Mo 桥角和 N,N 配体的不对称性质,存在多种异构体(最多 6 种)。单(I、V 和 VI)和双金属(II)氧代钼(VI)配合物在催化环氧化物中的作用