  We introduced here the study of a QCD based on a complex group. Our aim is to
show that a gauge theory with a complex symmetry develops some of the features
required for the description of a confined phase. This theory leads to gluons
with propagations characteristic of i-particles, fundamental constituents of
propagators in the Gribov scenario, together with a gluon propagating with the
mode predicted by 't Hooft for the quark confinement. In this way, we present
in this same theory a possible gluon condensate, together with a confining
interquark potential after the coupling to fermions. This is a novelty, as, up
to now, all theories of the GZ kind do not generate quark confinement.
