The dihalomethanes CH ₂X ₂ (X=Cl, Br, I) were co-crystallized with the isocyanide complexes trans-[MX ^M ₂(CNC ₆H ₄-4-X ^C) ₂] (M=Pd, Pt; X ^M=Br, I; X ^C=F, Cl, Br) to give an extended series comprising 15 X-ray structures of isostructural adducts featuring 1D metal-involving hexagon-like arrays. In these structures, CH ₂X ₂ behave as bent bifunctional XB/XB-donating building blocks, whereas trans-[MX ^M ₂(CNC ₆H ₄-4-X ^C) ₂] act as a linear XB/XB acceptors. Results of DFT calculations indicate that all XCH ₂–X⋅⋅⋅X ^M–M contacts are typical noncovalent interactions with estimated strengths in the range of 1.3–3.2 kcal mol ⁻¹. A CCDC search reveals that hexagon-like arrays are rather common but previously overlooked structural motives for adducts of trans-bis(halide) complexes and halomethanes.