| Abstrakt: |
Dynamic light scattering (DLS), electron paramagnetic resonance (EPR), and gas chromatography-mass spectrometry (GC-MS) methods were used to study interaction products of catalytic system components consisting of organoaluminum compounds (OAC), WCl6, and ethyl alcohol. Organic radicals (g = 2,0037, ∆H = 1,7mT) and W5+ complexes (gz = 1,746, gy = 1,820, gx = 1,842, g1 = 1,9957, g2 = 1,9540, g3 = 1,9465 at 77 K, and g0 = 1.9583 at 300 K) with an additional hyperfine structure from two chlorine nuclei 35,37 Cl have been identified by the EPR method. The formation of such compounds is accompanied by ethane and ethylene release. It is shown that a Cl6/Et3Al (Et2AlCl)/EtOH-based catalytic system of olefin metathesis is a colloidal solution at the initial stages of the interaction of components. The further action of OAC leads to the formation of a molecular solution. [ABSTRACT FROM AUTHOR] |
