  We investigate heavy flavor dibaryons with five heavy quarks $Q$
($Q=\{c,b\}$) and one light quark $q$ ($q=\{u,d,s\}$), namely the $Q^{5}q$
dibaryons. In the framework of an extended chromomagnetic model, we
systematically study the mass spectrum of these dibaryons. We find no stable
state below the corresponding baryon-baryon thresholds. In addition to the
analysis of the masses, we also study their two body decay properties by
estimating the relative width ratios of the decay channels. We hope our study
will be of help for future experiments.
