Multiple Bonds between Main-Group Elements and Transition Metals. 166.1 Oxo/Imido Complexes of Heptavalent Rhenium: Structures, Reactivity, and Behavior in Solution†
Multiple Bonds between Main-Group Elements and Transition Metals. 166.1 Oxo/Imido Complexes of Heptavalent Rhenium: Structures, Reactivity, and Behavior in Solution†
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主族元素和过渡金属之间的多重键 166.1 七价铼的氧代/亚胺络合物：结构、反应性和溶液中的行为†。
DOI：
10.1021/om971062
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发表时间：
1998
期刊：
影响因子：
2.8
通讯作者：
W. Scherer
中科院分区：
文献类型：
--
作者：
W. Herrmann;H. Ding;F. E. Kühn;W. Scherer
Mixed imido/oxo rhenium(VII) complexes, formal derivatives of methyltrioxorhenium(VII) (1) with (2,6-diisopropylphenyl)imido ligands of general formula CH3ReO3-x(NR)x (x = 1, and 2; compounds 2 and 3, respectively), have been synthesized. Their structures and behavior in solution have been studied by dynamic 1H and 17O NMR spectroscopy. In the solid state, compounds 2 and 3 display dimeric structures, as shown by X-ray crystallography. In solution, monomeric and dimeric forms exist in equilibria. At elevated temperatures, the monomers are dominant. In the solid state, the dimeric compounds are bridged by oxygen ligands, forming Re2O2 units, while in solution, nitrogen bridging is also evident. Formal replacement of all three oxo groups in 1 by (2,6-diisopropylphenyl)imido ligands leads to a compound of formula CH3Re(NR)3 (4). Complex 4 is monomeric both in solution, regardless of the temperature, and in the solid state. Ligand exchange processes take place via dimeric intermediates if organorhenium oxides...
