The most complex structures according to C2 (with the highest number of atoms located at the application of direct or Patterson methods) are :
Formula space group C1 Nc C2 radiation 2(C6H5NH3).Mo3O10.4H2O Pnma 27 70 18 XC12 Chlorothiazide-I P1 23 48 17 Sync alpha-NaCaAlF6 P21/c 18 54 17 XC12 K2TiSi3O9.H2O P212121 16 48 16 XC12 MCS-I Pca21 36 15 Ti2O(PO4)2(H2O)2 P-1 19 57 15 XC12+Sync+N Ti2O(PO4)2(H2O)2 P-1 15 45 15 XC12 C24H16O7 P-1 47 141 14 Sync Bi(H2O)4(OSO2CF3)3 P21/c 29 87 14 XC1 SiO2 (ITQ-4) I2/m 14 37 14 Sync gamma-Zn2P2O7 Pbcm 14 35 14 XC1 Ti3(PO4)4(H2O)2.NH3 P-1 14 36 14 XC12 beta-VO(HPO4).2H2O P-1 18 54 12 XC12 Li6P6O18 P21/n 15 45 12 XC12 Cr8O21 P-1 15 42 12 XC1+Sync+N (UO2)3H2(HO3PC6H5)4.H2O P212121 50 150 11 XC12 HP4N7 P21/a 11 33 11 Sync t-AlF3 P4/nmm 11 17 11 XC12 Zr2(NaPO4)4.6H2O P1 32 93 10 XC12 (NH4)2Ti3O2(HPO4)2(PO4)2 P21 25 74 10 XC12 Na2Ca(HPO4)2 P21 13 38 10 XC12 alpha-(NH4)2FeF5 Pbcn 10 21 10 XC12 Sapo-40 P2/n 62 182 9 XC12+Sync Y17.33(BO3)4(B2O5)2O16 Cm 32 62 9 XC12 [Si64O128].4C10H17N I41/amd 17 33 9 Sync NiV2O6 P-1 15 42 9 XC12 C6H6:C6F6 -IV P21/a 12 36 9 Sync+N 3-azabicyclo[3.2.2.]nonane Aba2 9 9 Sync [(CH3)4N]4Ge4S10 P-43n 15 33 8 XC1 RbC5H5-I Pbcm 14 34 8 Sync (VO)3(PO4)2.9H2O P21/n 13 36 8 Sync LiB2O3(OH).H2O Pnna 12 23 8 XC1 UO2(O3PCH2Cl) P21/c 9 27 8 Sync epsilon-WO3 Pc 8 23 8 N+Sync trans-[Pd(NH3)2Cl2] P-1 8 13 8 XC12 Beta-Ba3AlF9 Pnc2 29 74 7 XC12 Nb3(NbO)2(PO4)7 C2/c 22 62 7 Sync Al2(HPO3)3.4H2O P21 18 53 7 Sync (NH4)2Mo3O10.H2O P21/m 12 28 7 XC12 Bi3NF6 Pbcm 7 15 7 XC12+N Na2ZnSi2O6 C2/c 7 14 7 XC1 Beta-Pu I2/m 7 13 7 XC12 Zr(WO4)2 P213 7 11 7 XC12+N RUB-15 Iba2 ? ? 7 XC1 FeAsO4 P21/n 6 18 6 N cis-Na2N2O2 P21/c 6 18 6 XC1 Zr(OH)3NO3 C2/m 7 15 6 XC1 C5H11NO2 Pna21 8 23 6 Sync K2(H5O2)Al2F9 Pbam 8 15 6 XC12 Na[Si4O8(OH)].4H2O I41/amd 10 16 6 XC1 VPI-5 P63cm 11 28 6 XC12 Cu2WO4 P-1 14 42 6 XC1+N LaMo5O8 P21/a 14 42 6 Sync+N Fe4V2Mo3O20 P4122 16 42 6 XC12 Fe2V4O13 P21/c 19 57 6 XC12 (AlPO4)3.(CH3)4NOH P21212 26 70 6 XC12 [(CH3)2NH2]4Mo6O20.2H2O P21 38 113 6 XC12 La3Ti5Al15O37 Cc 60 178 5 Sync+N alpha-VO(HPO4).2H2O P21/c 14 42 5 XC12+N [N(CH3)4]Mo4O12 C2/c 13 25 5 XC12 Sr2Mg3H10 C2/m 13 24 5 XC1+N NaCD3 I222 11 29 5 Sync+N Co3(HPO4)2(OH)2 P21/n 10 27 5 XC12+N [(CH3)4N]2Ge4MnS10 I-4 9 16 5 XC1 PbPt2O4 P-1 9 12 5 XC12 ReF7 C-1 8 24 5 N COOD(CD2)COOD Pmmm 6 16 5 N CBrF3 P21/a 5 15 5 N MnP4 P-1 5 15 5 XC1 cis-[Pd(NH3)2Cl2] P1 5 12 5 XC12back