1361408-07-2Relevant academic research and scientific papers
Coordination study of ruthenium(II) complexes containing a mixed donor (P-N) ligand
Lee, Chun-Chin,Liu, Yi-Hung,Peng, Shie-Ming,Chou, Pi-Tai,Chen, Jwu-Ting,Liu, Shiuh-Tzung
, p. 23 - 30 (2012)
A series of ruthenium(II) complexes containing an o-(diphenylphosphino) aniline (P-N) ligand have been prepared to elucidate the geometric coordination isomers and substitution reactions. Thus, [(P-N)RuCl2(CO) 2] (1), [(P-N)RuCl2(dmso)2] (2) and [(P-N)RuCl2(PPh3)] (3) were synthesized by the reactions of various Ru(II) precursors with P-N. Treatment of 2 with CH3CN yielded the substitution product [(P-N)RuCl2(dmso)(CH3CN)] (4). The rate of the dmso ligand self-exchange of 2 was investigated, and ΔG≠ was estimated to be 23.7 kcal/mol, whereas ΔG ≠ for the CH3CN ligand self-exchange of 4 was 25 kcal/mol. Replacement of CO in 1 with dmso directly yielded [(P-N)RuCl 2(dmso)(CO)] (8). Of course, complex 8 could also be prepared by substitutions of 2 and 4 with CO, but through various intermediates. Furthermore, the substitution reaction of 3 with CO and dmso led to the formation of 8, and complexes 2 and 3 were inter-convertible. The stereochemistry of all the Ru(II) complexes has been established by elemental, spectroscopic and X-ray crystal structural analyses.
