Hirshfeld surfaces and two-dimensional fingerprint plots are used to visualize and analyse intermolecular interactions in two new organotin(IV)-phosphoryl complexes: [Sn(CH₃)₂[OP(O)(OCH₃)₂]₂]n (I) and {[(4-CH₃)C₆H₄NH][C₅H₉(4-CH₃)N]₂P(O)}Sn(CH₃)₂Cl₂ (II). In (I), the asymmetric unit is composed of the Sn(CH₃)₂[OP(O)(OCH₃)₂]₂ segment bonded to the...