C Fe4 N Ni S4 436.351 cyanide-bound Fe4 S4 Ni N metal-containing ligand MetalCoord N 2026-04-15 5FLE N 2026-09-16 RCSB REL HETAIN non-polymer C1 -1 54.117 13.720 46.206 1 N C ZXV N 1.650 1.307 -0.955 1 N C N1 0 53.621 14.579 45.742 1 N N ZXV N 2.784 1.346 -0.429 2 N N NI1 55.018 12.456 47.334 0 N NI ZXV N -0.091 1.248 -1.762 3 N NI S1 -2 53.354 11.242 46.558 1 N S1 ZXV N 0.094 -0.942 -1.762 4 N S FE1 54.804 10.087 50.075 0 N FE1 ZXV N -3.169 0.501 -0.833 5 N FE S2 -2 53.356 11.716 50.680 1 N S2 ZXV N -1.748 0.728 0.938 6 N S S3 -2 53.420 8.550 49.070 1 N S3 ZXV N -3.435 -1.742 -1.084 7 N S FE2 54.615 9.665 47.463 0 N FE3 ZXV N -1.987 -0.984 -2.659 8 N FE S4 -2 56.231 10.894 48.492 1 N S4 ZXV N -2.087 1.280 -2.683 9 N S FE3 52.601 10.665 48.717 0 N FE4 ZXV N -1.431 -1.268 -0.099 10 N FE FE4 54.321 13.567 49.660 0 N FE2 ZXV N -2.204 1.219 3.211 11 N FE N 1 N trip N 2 N sing N 3 N sing N 4 N sing N 5 N sing N 6 N sing N 7 N sing N 8 N sing N 9 N sing N 10 N sing N 11 N sing N 12 N sing N 13 N sing N 14 N sing RCSB RCSB RCSB RCSB RCSB InChI=1S/CN.4Fe.Ni.4S/c1-2;;;;;;;;; ZSMIQASRYDVPQG-UHFFFAOYSA-N [Fe]S[Fe]S[Ni]C#N.S1[Fe]S[Fe]1 [Fe]S[Fe]S[Ni]C#N.S1[Fe]S[Fe]1 C(#N)[Ni]1[S]2[Fe]3[S]([Fe]4[S]3[Fe]2[S]41)[Fe] C(#N)[Ni]1[S]2[Fe]3[S]([Fe]4[S]3[Fe]2[S]41)[Fe]