Palladium‐Copper‐Catalyzed Coupling of Tricarbonylchromium‐Complexed Phenylacetylene with Iodoarenes – A Facile Access to Alkynyl‐Bridged Cr(CO)
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‐Complexed Benzenes
作者:Thomas J. J. Müller、Hans Jörg Lindner
DOI:10.1002/cber.19961290604
日期:1996.6
(4a–e) or 1 to give polynuclear Cr(CO)3-complexed (phenylethynyl)benzenes 5a–e and doubly Cr(CO)3-complexed tolane 6 in good to moderate yield. The crystal structure analyses of μ3-η6:η6:η6[1,3,5-benzenetriyltris(2,1-ethynediyl)]tris(benzene)}tris[tricarbonylchromium(0)] (5e) and μ-η6:η6-[1,2-ethynediylbis(benzene)]}bis[tricarbonylchromium(0)] (6) reveal that the tricarbonylchromium tripods in the same
Synthesis, structure, electronic properties and thermal behavior of butadiynyl substituted phenylCr(CO)3-complexes
作者:Thomas J.J. Müller、Janet Blümel
DOI:10.1016/s0022-328x(03)00708-3
日期:2003.10
bridge operates by resonance mechanisms as established by correlations between Hammett's σp, σR and σP+ parameters. Most interestingly, however, is an unusual thermal behavior that leads to intractable paramagnetic polymers of unknown structure. According to thermal analyses (thermal gravimetrical analysis, differential scanning calorimetry) the complexes 3 react in a thermal solid-state reaction under CO
丁二取代的η 6 -benzeneCr(CO)3个配合物3是由催化的铜的苯乙炔络合物的耦合非常有效地制备1个溴炔2。的电子效应通过丁二桥的发送通过共振机制操作为通过相关哈米特之间建立σ p,σ [R和σ P +参数。然而,最有趣的是,异常的热行为导致了结构未知的难处理的顺磁性聚合物。根据热分析(热重量分析,差示扫描量热法),配合物3在CO挤出下以热固态反应进行反应,从而得到无定形的交联聚合物。