Synthesis of the Sterically Shielded Rhodium(I) Arene Complex by Cycloaddition of the Phosphorous‐Substituted Alkyne
作者:Roman A. Pototskiy、Mikhail A. Boym、Yulia V. Nelyubina、Dmitry S. Perekalin
DOI:10.1002/zaac.202200231
日期:2022.9.27
Reaction of two molecules of o-diphenylphosphino-tolane with RhCl(PPh3)3 produces the metallacycle complex with C4Rh(P3)Cl core. Further addition of tolane leads to 2+2+2-cycloaddition and gives the cationic complex [Rh(Ph2P−C6H4−C6Ph4−C6H4−PPh2)]Cl, in which the metal is coordinated to C6Ph4 aromatic ring as well to two chelating PPh2 groups. The resulting bulky terphenyl-diphosphine ligand with phosphorous
两分子邻二苯基膦基甲苯与RhCl(PPh 3 ) 3反应产生具有C 4 Rh(P 3 )Cl 核心的金属环络合物。进一步加入甲苯会导致 2+2+2-环加成反应并生成阳离子络合物 [Rh(Ph 2 P-C 6 H 4 -C 6 Ph 4 -C 6 H 4 -PPh 2 )]Cl,其中金属与 C 6 Ph 4芳环以及两个螯合 PPh 2配位团体。得到的具有锁定在顺式位置的磷原子的庞大三联苯-二膦配体可以通过强且不受阻碍的配体tBuNC与铑脱配。通过X射线衍射研究了所有化合物的特殊结构。