The molecular packing arrangements for the unsolvated compounds, PtCl2(ATQ-CH2NH2) (1a) and PdCl2(ATQ-CH2NH2) (2) (ATQ = azatriquinane), and two solvates of the platinum complex, 6{PtCl2(ATQ-CH2NH2)}·2(CH3CN) (1b) and 3{PtCl2(ATQ-CH2NH2)}·2(CH2Cl2) (1c), are reported. These planar, d8 complexes have a wedgelike shape due to the presence of the bulky azatriquinane unit coordinated directly to the metal. All of the crystals exhibit hydrogen bonding between the N−H groups of one molecule and the chloride ligands on another. Despite the similar sizes and shapes of the complexes, the unsolvated compounds, PtCl2(ATQ-CH2NH2) (1a) and PdCl2(ATQ-CH2NH2) (2), pack in entirely different fashions, with metallophilic interactions between pairs of cofacial complexes in the palladium complex. The platinum complex lacks the metallophillic interactions. The structure of 6{PtCl2(ATQ-CH2NH2)}·2(CH3CN) (1b) is noteworthy for two features. First, these crystals contain an ordered cyclic assembly of 10 molecules of the complex...