The ¹H–¹⁵N HMBC determined ¹⁵N NMR chemical shifts (ppm) for the silver(i) complexes [1–Ag–1]⁺ and [2–Ag–2]⁺ with different anions (BF₄, PF₆, and OTf).

Complex	δ N	Complex	δ N
[1–Ag–1]PF6 (1a)	–118.6	[2–Ag–2]PF6 (2a)	–111.4
[1–Ag–1]BF4 (1e)	–117.6	[2–Ag–2]BF4 (2e)	–111.9
[1–Ag–1]OTf (1f)	–114.5	[2–Ag–2]OTf (2f)	–110.0