Cobalt-catalyzed intramolecular homo Diels-Alder reactions
摘要:
Norbornadienes bearing a tether at C-2 which contains an acetylene have been found to undergo a cobalt-catalyzed intramolecular homo-Diels-Alder reaction creating pentacyclic cycloadducts.
Highly phosphorescent organopalladium(<scp>ii</scp>) complexes with metal–metal-to-ligand charge-transfer excited states in fluid solutions
作者:Jinqiang Lin、Chao Zou、Xiaobao Zhang、Qin Gao、Sa Suo、Qihang Zhuo、Xiaoyong Chang、Mo Xie、Wei Lu
DOI:10.1039/c9dt02525a
日期:——
pincer-type cyclometalated Pd(II) complexes with foldable diacetylide ligands show crystallographically determined intramolecular Pd⋯Pd contacts of 3.203–3.380 Å. In deoxygenated fluid solutions, these Pd(II) complexes are highly phosphorescent in the red region with emission quantum yields up to 48%, which has been ascribed to metal–metal-to-ligand charge-transfer (MMLCT) excited states in nature.
Anionic acetylenic complexes of group VI metal carbonyls
作者:W. Joseph Schlientz、John K. Ruff
DOI:10.1039/c29690001363
日期:——
Anioniccomplexes containing an acetylenegroup σ-bonded to a GroupVI transition metal, M(CO)5CCR–, were prepared from M(CO)6 and RCC–, where M is Cr, Mo, or W, and R is Ph or Me.
由M(CO)6和RC C –(其中M为Cr,Mo或W和R )制得含有σ键合至第VI过渡金属M(CO)5 C CR –的乙炔基的阴离子络合物。是Ph或Me。
Synthesis and transformations of some new 2,4-bismethylene-1,3-ditelluretanes
作者:Desikan Rajagopal、M.V. Lakshmikantham、Michael P. Cava、Grant A. Broker、Robin D. Rogers
DOI:10.1016/s0040-4039(03)00245-4
日期:2003.3
A novel four-membered 1,3-ditelluretane dialdehyde 8/9 was synthesized from trimethylsilylethynyl tellurolate. The dialdehyde was transformed into extended tetrathiafulvalenes (14 and 15). These are the first examples of ditelluretane spaced TTF derivatives.
Photoluminescence with high quantum yield and long lifetime from a triplet metal-to-ligand charge transfer (MLCT) excited state in fluid solution at room temperature has been observed for a series of platinum(II) 4'-p-tolyl-terpyridyl acetylide complexes.