147264-65-1Relevant academic research and scientific papers
Synthesis, structure, and fluxional behavior of octahedral ruthenium(II) complexes with mixed oxygen-phosphine ligands. 31P DNMR spectroscopic studies, line shape analysis, and determination of rearrangement barriers
Lindner, Ekkehard,M?ckel, Andrea,Mayer, Hermann August,Kühbauch, Hartwig,Fawzi, Riad,Steimann, Manfred
, p. 1266 - 1271 (2008/10/08)
The synthesis and spectroscopic properties of ether-phosphine ruthenium(II) complexes of the type Cl2Ru(P'down curve sign'O)2 (5a, 7a-10a) and trans-Cl2Ru(CO)(P～O)(P'down curve sign'O) (5b, 7b-10b) are reported. Temperature-dependent 31P NMR spectra of the fluxional complexes 1b-11b and cis-Cl2Ru(CO)(P～O)(P'down curve sign'O) (1c-3c) were measured and by using a modified version of DNMR5, computer-generated spectra were obtained and fitted to the experimental spectra. Graphic application of the Eyring equation to the kinetic data afforded the thermodynamic parameters ΔH≠, ΔS≠, and ΔG≠. Complex 11b with the strong basic four-membered ether-phosphine 11 crystallizes in the monoclinic space group P21/n, with a = 11.974(2) A?, b = 10.877(2) A?, c = 29.567(6) A?, β = 96.34(3)°, Z = 4, and V = 3827.2(12) A?3 (R = 0.075 and Rw = 0.076).
