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Ionized outflows are ubiquitous in non radio-loud obscured quasars (QSO2s) atdifferent redshifts. We search for large-scale ionized outflows associated withsix optically selected QSO2 (five non-radio-loud and one radio-loud) at $z\sim$0.2-0.5, targeting objects with extended radio structures. We have obtainedOSIRIS/GTC optical long slit spectroscopy data for these six QSO2 with the slitlocated along the radio axis. We traced the gas kinematics with the[OIII]$\lambda$4959,5007 lines to investigate ionized outflows and characterizethe dynamical state of the host galaxies. This second study has beencomplemented with previously published FORS2/VLT spectroscopic data of 13 moreQSO2 at similar z. We identify ionized outflows in four out of the six QSO2observed with the GTC. The outflows are spatially unresolved in two QSO2 andcompact in a third (radial size of R=0.8$\pm$0.3 kpc). Of particular interestis the radio-quiet QSO2 SDSS 0741+3020 at z=0.47, associated with a giant$\sim$ 112 kpc nebula. An ionized outflow probably induced by the radiostructures has been detected along the axis defined by the central$\sim$1\arcsec\ radio structure, extending up to at least $\sim$4 kpc from theactive galactic nucleus (AGN). Turbulent gas ($\sigma\sim$130 km s$^{-1}$) hasalso been detected across the giant gas nebula up to $\sim$40 kpc from the AGN.This turbulence may have been induced by outflows triggered by the interactionbetween a so-far undetected large-scale radio source and the nebula. Regardingthe dynamical state of the host galaxies, we find that the majority of the QSO2show v/$\sigma<$ 1, implying that they are dominated by random motions(so-called dispersion-dominated systems). Most (17 of 19) fall in the area ofthe E/S0 galaxies in the dynamical diagram v/$\sigma$ versus $\sigma$. None areconsistent with spiral or disk galaxies.

QSO2 outflow characterization using data obtained with OSIRIS at the Gran Telescopio Canarias