Table 2.

Comparison of mean Cu—N bond lengths, N-Cu-N and Cu-N-Cu bond angles in the solid-state tetrameric copper(I) amide structures.

Complex	Cu—N [Å]	N-Cu-N [°]	Cu-N-Cu [°]
1	1.921	171.97	87.01
2	1.939	178.35	88.38
3[a]	1.885	177.05	92.22
4	1.897	172.38	87.50

^[a] Taken from ref. [46].