Synthesis and Characterization of bis[(2-ethyl-5-methyl-imidazo-4-yl)methyl]Sulfide and Its Coordination Behavior toward Cu(II) as a Possible Approach of a Copper Site Type I

Table 3

Comparison of coordination bond lengths for two copper site type I and complex [Cu(bemims)(NO₃)₂].

	Azurin	Plastocyanin		[Cu(bemims)(NO3)2]
Bond	Distance (Å)		Bond	Distance (Å)
Cu–O(Gly)	3.13		Cu-O1(NO3)	2.1269(19)
Cu–N(His)	2.08	2.04	Cu-N3(Imi)	1.9541(19)
Cu–S(Cys)	2.15	2.13	Cu-O1(NO3)	2.1269(19)
Cu–N(His)	2.00	2.10	Cu-N3(Imi)	1.9541(19)
Cu–S(Met)	3.11	2.90	Cu-S1(Thiother)	2.4122(13)