  We present the results of the dynamical analysis of the rich, hot, and X-ray
very luminous galaxy cluster A2219, containing a powerful diffuse radio-halo.
Our analysis is based on new redshift data for 27 galaxies in the cluster
region, measured from spectra obtained at the TNG, with the addition of other
105 galaxies recovered from reduction of CFHT archive data in a cluster region
of about 5 arcmin radius (about 0.8 Mpc h^-1 at the cluster distance) centered
on the cD galaxy. The investigation of the dynamical status is also performed
by using X-ray data stored in the Chandra archive. Further, valuable
information comes from other bands - optical photometric, infrared, and radio
data - which are analyzed and/or discussed, too. Our analyses support the view
of the connection between extended radio emission and merging phenomena in
galaxy clusters.
