Notes. The complete table is published in its entirety at the CDS. A portion is shown here for guidance regarding its form and content. In the first part, we list the X-ray detected AGN; in the second part, we report basic data for the 11 sources in the parent sample undetected in the X-ray (see text).Column (1): unique source identification number in the 2XMMi catalogue; for the X-ray undetected sources, arbitrary ID number (as in Table 3). Column (2): redshift for the SDSS counterpart (as in Table 3). Column (3): galactic column density, from Kalberla et al. (2005); in units of 10²⁰ cm^-2. Column (4): FWHM of the Mg ii emission line, in units of km s^-1; for sources marked with (∗), from the SDSS DR7 catalogue, otherwise from Shen et al. (2011). Column (5): monochromatic continuum luminosity at 3000 Å rest frame, in units of ergs s^-1  Å ^-1; for sources marked with (∗) recovered as described in Sect. 3, otherwise from Shen et al. (2011). Column (6): mass of the central BH, in units of M_⊙; for sources marked with (∗), computed from Eq. (1); otherwise from Shen et al. (2011). Column (7): hard X-ray luminosity, recovered as described in Sect. 3; in units of erg s^-1 (upper limit for sources undetected in the X-ray). Column (8): ratio between the hard X-ray luminosity and the Eddington luminosity, L_Edd ≡ 1.3 × 10³⁸ M_BH/M_⊙ [erg s^-1] (upper limit for sources undetected in the X-ray). Column (9): luminosity-dependent X-ray bolometric correction, from Eq. (2), (Marconi et al. 2004); upper limit for sources undetected in the X-ray. Column (10): bolometric luminosity, recovered as described in Sect. 3; in units of erg s^-1 (upper limit for sources undetected in the X-ray). Column (11): Eddington ratio, defined as λ ≡ L_bol/L_Edd (upper limit for sources undetected in the X-ray).