Reaction of the in-Situ-Generated Ruthenium−Acetylide Complex C5Me5Ru(PPh3)C⋮CPh with Small Molecules
摘要:
A coordinatively unsaturated acetylide species C5Me5Ru(PPh3)C=CPh (1) was generated in situ from the reaction of ruthenium-vinylidene complex C5Me5Ru(Cl)(PPh3)=C=CHPh (2) with Et3N. The vinylidene complex 2 was prepared from the substitution. reaction of C5Me5Ru(PPh3)(2)Cl with PhC=CH. The in-situ-generated 1 was found to react readily with a variety of small molecules. For example, the reaction of 1 with CO produced the stable adduct C5Me5Ru(CO)(PPh3)C=CPh (3) in 85% yield, the structure of which was established by X-ray crystallography. The similar reactions of 1 with H-2 and PhC=CPh also gave the hydride complex C5Me5Ru(PPh3)(H)(H2C=CHPh) (4) (76% yield) and the alkyne complex C5Me5Ru(PPh3)(PhC=CPh)C=CPh (5) (85% yield), respectively. The reaction of 1 with CO2 produced the carboxylate complex C5Me5Ru(PPh3)(eta(2)-O2CC=CPh) (6) from the insertion of CO2 to the ruthenium-acetylide carbon bond.
Bruce, Michael I.; Hall, Ben C.; Zaitseva, Natasha N., Journal of the Chemical Society, Dalton Transactions, 1998, # 11, p. 1793 - 1803
作者:Bruce, Michael I.、Hall, Ben C.、Zaitseva, Natasha N.、Skelton, Brian W.、White, Allan H.
DOI:——
日期:——
An unusual Cu2Ru2 cluster containing a tetrameric phenylethynyl ligand
作者:Michael I. Bruce、Natasha N. Zaitseva、Brian W. Skelton、Allan H. White
DOI:10.1016/j.jorganchem.2007.11.002
日期:2008.4
The reaction between RuCl(PPh(3))(2)Cp* and Cu(CCPh)}(n) in refluxing benzene afforded Ru(2)Cu(2)(C(2)Ph)(5)H(2)(Cl)(PPh(3))Cp(2)*, which contains an unusual tetramer of the phenylethynyl group which interacts with an Ru...Cu...Cu...Ru chain. The second Ru atom is part of a ruthenocenyl moiety which interacts weakly with the second Cu atom, and bears a vinylidene which bridges an Ru - Cu vector. The structure of a second modification of Ru(C CPh)(CO)(PPh(3))Cp* is also reported. (C) 2007 Elsevier B. V. All rights reserved.