Table 2. Interchain Correlations in Different Periodic Structural Models Defined by the Metal–Metal Relationships within the Metal Layers in (Cu_1/3Ag_1/3Au_1/3)CN for Cu, Ag, and Au Atoms^a.

		nearest-metal neighbors (r ∼ 3.4 Å)		next-nearest-metal neighbors (r ∼ 5.8 Å)		next-next-nearest-metal neighbors (r ∼ 6.8 Å)
structural model	space group	hetero-	homo-	hetero-	homo-	hetero-	homo-
K	P6mm{1}b	0	6 Cu···Cu	0	6 Cu···Cu	0	6 Cu···Cu
			6 Ag···Ag		6 Ag···Ag		6 Ag···Ag
			6 Au···Au		6 Au···Au		6 Au···Au
L	R3m{3}	6 Cu···Ag	0	0	6 Cu···Cu	6 Cu···Ag	0
		6 Cu···Au			6 Ag···Ag	6 Cu···Au
		6 Ag···Au			6 Au···Au	6 Ag···Au
M	Pmm2{2}, Cu–Au layers and Ag-only layers	8 Cu···Au	6 Ag···Ag	8 Cu···Au	6 Ag···Ag	0	6 Cu···Cu
			2 Cu···Cu		2 Cu···Cu		6 Ag···Ag
			2 Au···Au		2 Au···Au		6 Au···Au
N	Pmm2{2}, Ag–Au layers and Cu-only layers	8 Ag···Au	6 Cu···Cu	8 Ag···Au	6 Cu···Cu	0	6 Cu···Cu
			2 Ag···Ag		2 Ag···Ag		6 Ag···Ag
			2 Au···Au		2 Au···Au		6 Au···Au

^aSee section S.6 for details of models.

^b{n} denotes the number of (Cu_1/3Ag_1/3Au_1/3)CN units in the unit cell.