1 HCN 2 iron/2 sulfur/3 carbonyl/2 cyanide/water/methylether cluster 1.000 2 4WV Bis(cyanido-kappac)(dicarbonyl)-mu-(oxomethylidene)-mu-(oxydimethanethiolate-1kappas:2kappas)diiron(2+) 0.944 3 402 Dicarbonyl[bis(cyanide-kappac)]-mu-(iminodimethanethiolatato-1kappas:2kappas)-mu-(oxomethylidene)diiron(2+) 0.842 4 4WW Bis(cyanido-kappac)(dicarbonyl)-mu-(oxomethylidene)[mu-propane-1,3-bis(thiolate)-1kappa~2~S~1~,S~3~:2kappa~2~S~1~,S~3~] diiron(2+) 0.842 5 4WX Bis(cyanido-kappac)(dicarbonyl)-mu-(oxomethylidene)-mu-(sulfanediyldimethanethiolatato-1kappas:2kappas)diiron(2+) 0.842 6 LFH Dicarbonyl[bis(cyanide-kappac)]-mu-(iminodimethanethiolatato-1kappas:2kappas)-mu-(oxomethylidene)diiron(2+) sulphide 0.800 7 FU8 Dicarbonyl[bis(cyanide-kappac)]-mu-(ethanethiolatato-1kappas:2kappas)-mu-(ox omethylidene)diiron(2+) 0.789 8 MHX Binuclear [fefe], di(thiomethyl)amine, carbon monoxide, cyanide cluster (-co form) 0.762 9 VHR Binuclear [fefe], di(thiomethyl)amine, carbon monoxide, cyanide cluster (-cn form) 0.762