Synthesis and Structure of Molybdenum and Tungsten Bisphosphine Carbonyl Dimers
作者:Daniel F. Brayton、D. Michael Heinekey
DOI:10.1021/om800273t
日期:2008.8.1
The synthesis of two bisphosphine ligands (R2P)2C6H4 with a para-disubstituted phenyl moiety is described (R = Cy (3), i-Pr (4)). Solutions of M(CO)3(C7H8) (C7H8 = η6-cycloheptatriene, M = Mo and W) and 3 or 4 were reacted under CO affording dimeric compounds of the general formula [M2(CO)8((R2P)2C6H4)2] (M = W, R = Cy (5); M = Mo, R = Cy (6); and M = W, R = i-Pr (7)). When the same reactions are carried
描述了具有对二取代苯基部分的两个双膦配体(R 2 P)2 C 6 H 4的合成(R = Cy(3),i -Pr(4))。M的溶液(CO)3(C 7 H ^ 8)(C 7 H ^ 8 =η 6 -cycloheptatriene,M = Mo和W)和3或4 CO下,得到通式[M的二聚体化合物进行反应2(CO )8((R 2 P)2 C 6 H 4)2 ](M = W,R = Cy(5); M = Mo,R = Cy(6);和M = W,R =i- Pr(7))。当在H 2存在下进行相同反应时,通式为[W 2(CO)6((R 2 P)2 C 6 H 4)2(H 2)2 ]的相似W-H 2类似物。,R = Cy(8),R =i- Pr(9),可以通过1 H和31 P NMR光谱法观察到。化合物8和9是不可分离的,因为分别形成5和7的配体容易重新分布。
Verfahren zur Herstellung von aromatisch substituierten Olefinen aus Chloraromaten
申请人:HOECHST AKTIENGESELLSCHAFT
公开号:EP0587050B1
公开(公告)日:1996-03-13
Fast and Tunable Phosphorescence from Organic Ionic Crystals
作者:Iida Partanen、Omar Al‐Saedy、Toni Eskelinen、Antti J. Karttunen、Jarkko J. Saarinen、Ondrej Mrózek、Andreas Steffen、Andrey Belyaev、Pi‐Tai Chou、Igor O. Koshevoy
DOI:10.1002/anie.202305108
日期:2023.9.4
case of iodide–π charge transfer combined with electrostatically controlled packing effects, high quantum yields (Φem up to 0.75) and fast radiative rate constants (kr of up to 2.77×105 s−1) of phosphorescence have been realized at room temperature, which are exceptionally rare for metal-free systems.
结晶碘化二磷盐的光致发光机制强烈依赖于阴离子-π相互作用。在碘化物-π电荷转移与静电控制堆积效应相结合的情况下,实现了磷光的高量子产率(Φ em高达0.75)和快速辐射速率常数(k r高达2.77×10 5 s -1 )在室温下,这对于无金属系统来说是极其罕见的。