在二恶烷中使用Strohmeier回流法研究了[2.2]对环烷(C 16 H 16)和对二甲苯(C 6 H 4 Me 2 -1,4)由六羰基铬形成芳烃三羰基配合物的相对能力,并且速率常数形成对比。该反应发现与[2.2]对环芳烷通过更快速地进行CA。25%。密度泛函分子轨道计算已使该观察合理化,并表明[2.2]对环粉体系统相对于p具有增强的反应性-二甲苯是前者两个芳烃平台之间排斥相互作用的结果,通过吸电子的Cr(CO)3片段的配位可以在一定程度上缓解二甲苯的相互作用。
Ultraviolet Laser Desorption of Chromium Tricarbonyl Arene Complexes: A Route to Extended Sandwich Complexes
作者:Michael J. Dale、Paul J. Dyson、Priya Suman、Renato Zenobi
DOI:10.1021/om960592n
日期:1997.1.1
desorption/ionization mass spectra of the benzene complex Cr(CO)3(C6H6) and the [2.2]cyclophane complexes Cr(CO)3(C16H16-1,4), Cr(CO)3(C16H16-1,3), and Cr(CO)3}2(C24H24) are reported. In each spectrum intense ion signals are obtained which correspond to the decarbonylated chromium arene cation [Cr(arene)]+ and the bis(arene) sandwich cation [Cr(arene)2]+. The cyclophane complexes also generate ion signals at higher
苯配合物Cr(CO)3(C 6 H 6)和[2.2]环烷配合物Cr(CO)3(C 16 H 16 -1,4),Cr的正离子紫外激光解吸/电离质谱报告了(CO)3(C 16 H 16 -1,3)和Cr(CO)3 } 2(C 24 H 24)。在每个光谱中,获得对应于脱羰基铬芳烃阳离子[Cr(arene)] +和双(芳烃)夹心阳离子[Cr(arene)2 ] +的强离子信号。环烷配合物还产生更高质量的离子信号,这可归因于扩展的多核夹心复合物。另外,Cr(CO)6和[2.2]对环环烷的混合物的紫外激光解吸质谱显示包含含有新的金属-配体键的离子,即。夹心物质[Cr(C 16 H 16 -1,4)2 ] +。
Mononuclear and binuclear tricarbonylchromium complexes of aryl-substituted [2.2]paracyclophanes
作者:E. V. Sergeeva、V. I. Rozenberg、E. V. Vorontsov、V. V. Mikul'shina、N. V. Vorontsova、A. V. Smirnov、F. M. Dolgushin、A. I. Yanovsky
DOI:10.1007/bf02495522
日期:1998.1
substituent to form (in low yields) the corresponding mononuclear complex or binuclear complexes with both the aromatic ring of paracyclophane and the aryl ring of the substituent involved in coordination. The structure of such complex, namely, [4-(η6-2,4,6-trimethylpheny)-11-16-η6-[2,2]paracyclophane]bis[tricarbonylchromium(0)] was confirmed by X-ray diffraction study.