respectively) were cocrystallized with the metal acetylacetonates [M(acac) 2 ] (M = Pd (1), Pt (2)) to give the three adducts 1•2BNPN, 2• 2BNPN, and 1•2INPN, exhibiting reverse arene sandwich solid-state structures. The inspection of the XRD data for the adducts revealed new types of (lone pairBr) bifurcated halogen bonds (XBs) along with some other types of short contacts were recognized. The XRD experiments were supported by Hirshfeld surface analysis and DFT calculations: i.e., topological analysis of the electron density distribution within the framework of the QTAIM method at the ωB97XD/DZP-DKH level of theory. Estimated energies of all studied noncovalent contacts vary from 0.6 to 3.8 kcal/ mol. Article pubs.acs.org/crystal