  We calculate the mass and residue of the heavy spin--3/2 negative parity
baryons with single heavy bottom or charm quark by the help of a two-point
correlation function. We use the obtained results to investigate the diagonal
radiative transitions among the baryons under consideration. In particular, we
compute corresponding transition form factors via light cone QCD sum rules
which are then used to obtain the magnetic dipole moments of the heavy
spin--3/2 negative parity baryons. We remove the pollutions coming from the
positive parity spin--3/2 and positive/negative parity spin--1/2 baryons by
constructing sum rules for different Lorentz structures. We compare the results
obtained with the existing theoretical predictions.
