| Metal-Metal Bond (2)? | DOI | CCDC code | 
|  ACu2(CH3COO)4(H2O)2 | doi.org/10.1039/dt9730002575 | CUAQAC02 1132069 | 
| Cu2(CH3COO)4py2 | doi.org/10.1107/S0108270188011904 | PYCUAC02 1240457 | 
| Cu2(PhCOO)4(PhCOOH)2 | doi.org/10.1039/C7DT01571B | KUBHOE03 1527825 | 
| Cu2Cl4-2 | doi.org/10.1002/anie.198808561 | SAKYEI 1254420 | 
|  BPt2(CH3COO)4(H2O)2(ClO4)2 | doi.org/10.1021/ja00044a058 | PAKYUV 1227565 | 
| Rh2(CH3COO)+Cp*2H2 | doi.org/10.1016/S0022-328X(00)93968-8 | BADHET 1104829 | 
| Rh2(CH3COO)4(H2O)2 | doi.org/10.1107/S0567740871004527 | ACAQRH10 1100448 with added H | 
| Rh2(CH3COO)4py2 | doi.org/10.1021/ic50187a046 | PYACRH 1240387 | 
|  CRu2(CH3COO)4Cl2-2 | doi.org/10.1021/ic00260a023 | ACCRHG01 1100523 | 
| Ru2(CH3COO)4Cl2– | doi.org/10.1016/j.poly.2004.11.018 | NALDUA 251382 | 
| Os2(CH3COO)4Cl2 | doi.org/10.1016/S0020-1693(00)81824-1 | COHNUI 1128841 | 
| Tc2(CH3COO)4Cl2 | doi.org/10.1016/j.poly.2012.09.064 | CIGHUX 890709 | 
|  DCr2(CH3COO)4(H2O)2 | doi.org/10.1021/ic50209a021 | CRAQAC12 1131603 | 
| W2(CF3COO)4(PPh3)2 | doi.org/10.1021/ic00155a011 | CAHFIA 1119320 | 
| Cr2(CH3COO)4 | doi.org/10.1021/ja00456a029 | TACETC 1265080 with added H | 
| Mo2(CH3COO)4 | doi.org/10.1107/S0567740881008303 | MOLACE02 1213071 | 
| Pt4(CH3COO)8 | doi.org/10.1107/S0567740878011632 | PLATAC01 1235170 | 
|  ERe2(CH3COO)2Br4 | Zhurnal Neorganicheskoi Khimii (1981) 26, 107 | ACBRRE10 1100487 with added H | 
| Mo2(CH3COO)2(PPh3)2Cl2 | doi.org/10.1016/S0277-5387(00)87246-0 | GEPDIO 1166054 with added H | 
| Ru2(CH3COO)2(PCy3)2(CO)4 | doi.org/10.1002/chem.201003662 | WAPQUB 798851 | 
| Ir2(CH3COO)2(PCy3)2Cl2(CO)2 | doi.org/10.1016/S0020-1693(01)00615-6 | YOFQIT 167648 | 
|  FMo2(CF3COO)2Br4-2 | doi.org/10.1021/ic00151a012 | BURTOX 1117152 | 
| Tc2(CH3COO)2Cl4) | doi.org/10.1021/ja105730e | OSICUP 834033 | 
| Ru2(CH3COO)2py(CO)4 | doi.org/10.1039/b002304n | WONBOQ 149804 | 
| Ir2(CH3COO)2py2(CO)3SbF6 | doi.org/10.1016/j.ica.2005.01.013 | YAPCUO 256947 | 
|  GMo2(SO4)4-4 | doi.org/10.1021/ic50144a036 | |
| Mo2(SO4)4-3 | doi.org/10.1021/ic50194a051 | |
| Mo2(O2P(OPh)2)4 | doi.org/10.1021/ic00302a047 | KAFHAA 1192133 | 
| Mo2(O2P(OPh)2)4+ | doi.org/10.1021/ic00091a036 | LEYCAT 1206348 | 
| Other N & P ligands | ||
|  HMo2Cl4(PMe2CH2CH2PMe2)2 | doi.org/10.1021/ic00152a017 | BUTJAB 1117332 | 
| Mo2Cl4(pcp)2 | doi.org/10.1021/ic980972w | HEJQOC 114713 | 
| W2Cl4(pcp)2 | doi.org/10.1016/S0020-1693(00)80660-X | GADYAL 1162613 with added H | 
| Mo2Br6(pcp)2 | doi.org/10.1021/ic00011a010 | JIRVOV 1187034 with added H | 
| W2Cl6(pcp)2 | doi.org/10.1021/ic00271a017 | FULSAG 1161080 with added H | 
| Tc2Cl4(pcp)2 | doi.org/10.1016/S1387-7003(99)00137-9 | LAQTUS 138939 | 
| Re2Cl4(pcp)2 | doi.org/10.1016/S0020-1693(00)00321-2 | DECCAP01 1137729 | 
|  IW2Cl4H2(pcp)2 | doi.org/10.1016/S0277-5387(97)00167-8 | NOVGIO 1222876 | 
| Nb2Cl6(pcp)2 | doi.org/10.1021/ic00166a031 | CEGGUQ 1122375 with added H | 
| Re2Cl6(pcp)2 | doi.org/10.1021/ja00322a024 | CIDMAD 1124891 with added H | 
| Re2(CO)4(CH2)2(pcp)2 | doi.org/10.1016/S0022-328X(03)00101-3 | EJAPEK 200915 | 
|  JRe2(CH3)4(pcp)2 | doi.org/10.1016/S0022-328X(03)00101-3 | EJAPAG 200914 | 
| Ru2(CO)4(CH2)(pcp)2 | doi.org/10.1021/om0010417 | ADEVIO 110125 | 
| Ru2(CO)5(pcp)2 | doi.org/10.1039/a706728c | NICVEA 1219575 | 
| Ru2(CO)2Cl2(pcp)2 | doi.org/10.1016/S0022-328X(02)01636-4 | AGUSIE 187201 | 
|  KRu2(CO)2(CH3CN)4(pcp)2+2 | doi.org/10.1021/om990513i | QAWLIJ 1241779 | 
| Ru2(CO)4I2(pcp) | doi.org/10.1039/dt9860000899 | DOLCEM 1143867 with added H | 
| Ru2Cp*2Cl2(pcp)+2 | doi.org/10.1007/BF00807583 | JIZQIS 103549 | 
| Ru2Cp2(CO)(CH)(pcp)2+ | doi.org/10.1039/c39840000841 | CIFXOE 1125056 | 
|  LPd2(PiPr2CH2PiPr2)2 | doi.org/10.1016/0020-1693(94)03907-0 | POLWUI 1236552 | 
| Rh2(CO)2H2(PiPr2CH2PiPr2)2 | doi.org/10.1016/S0022-328X(98)00787-6 | HIFCUU 102392 | 
| Rh2Cp2(CO)(pcp) | doi.org/10.1039/dt9840000533 | BIKWAT10 1110940 with added H | 
| Rh2(CO)2(CH3)(pcp)2+ | doi.org/10.1016/S0020-1693(00)83821-9 | LEGHIO 1204869 with added H | 
|  MCo2(CO)6(pcp) | doi.org/10.1021/om050060j | JAZFUM 260502 | 
| Ir2(CO)2Cl2I2(pcp)2 | doi.org/10.1016/S0020-1693(00)85149-X | WAXDEE 1290754 | 
| Ir2Cp*2H2(pcp)+2 | doi.org/10.1039/b001239o | MEFTAS 146419 | 
| Ir2(CO)3Cl2(pcp)2 | doi.org/10.1021/ic00183a023 | CIXGUL 1126693 | 
|  NAg2(pcp)2+2 | doi.org/ 10.1016/j.ica.2004.07.032 | FOCJUD 241108 | 
| Au2(pcp)2+2 | doi.org/10.1107/S0108270188013630 | JAMKAJ 1182459 | 
| Ni2(CO)3(pcp)2 | doi.org/10.1021/ja00215a018 | GEDXAO 1165167 with added H | 
| Pd2Cl2(pcp)2 | doi.org/10.1016/S0020-1693(01)00682-X | MEYTOZ 172851 | 
| Pt2(CO)2(pcp)2+2 | doi.org/10.1021/om00071a002 | DICPTA10 1140284 | 
|  OV2(dpa)4 | doi.org/10.1016/S0020-1693(00)00115-8 | XELTEN 158592 | 
| W2(dpa)4+2 | doi.org/10.1021/ja1114248 | AVADOR 804045 | 
| Mo2(dpa)4 | doi.org/10.1016/S0020-1693(99)00049-3 | COXWER 137273 | 
| Cr3(dpa)4Cl2 | doi.org/10.1021/ic990793u | NUYZEM01 142841 | 
|  PRu3(dpa)4Cl2 | doi.org/10.1016/j.ica.2004.02.041 | ABUVID 228861 | 
| Ni3(dpa)4+3 | doi.org/10.1021/ja025543i doi.org/10.1021/ic0262740 | FAFVAK 184110 | 
| Ni3(dpa)4Cl2 | doi.org/10.1021/ic0262740 | UHUROE 209686 | 
| Cu3(dpa)4Cl2+ | doi.org/10.1021/ic0262740 | UHUSAR 209688 | 
|  QCr2(pip)4 | doi.org/10.1021/ja9912675 | CAPQAL 133060 | 
| Cr2(dmba)4 | doi.org/10.1021/ic50202a054 | MBZACR 1210002 with added H | 
| Ru2(dmba)4Cl2 | doi.org/10.1021/ic0200794 | IGAJEF 177898 | 
| Ru2(dmba)4Ph2 | doi.org/10.1021/acs.organomet.9b00555 | QUCQAJ 1947222 | 
|  RCo2(dpba)4 | doi.org/10.1021/ic00030a018 | VOZTEJ 1287092 | 
| Rh2(dpba)4 | doi.org/10.1021/ic00030a018 | VOZTIN 1287094 | 
| Pd2(dpba)4 | doi.org/10.1021/ic00297a013 | SADLEO 1253778 | 
| Au4(dpba)4 | doi.org/10.1007/s10876-007-0119-8 | CINFOV 640082 | 
|  SCr2(dmfa)4 | doi.org/10.1039/c1cc10194c | EPUSAK 808207 | 
| Ni2(dmfa)4 | doi.org/10.1071/CH14271 | QOMKEK 1006738 | 
| Mo2(bipba)2 | doi.org/10.1021/ja905035f | WULRUR 732120 | 
| Re2(dpaa)2Cl4 | doi.org/10.1021/ic50210a037 | CLAREA 1126996 with added H | 
|  TCr2(tipmap)2 | doi.org/10.1002/anie.200801160 | HOGKOE 677809 | 
| Cr2(dmsfa)2 | doi.org/10.1002/anie.200803859 | XOPFEO 694479 | 
| Fe2(bippc)2 | doi.org/10.1002/anie.201203711 | YEKLIL 2869249 | 
| Ni2(bippg)2 | doi.org/10.1002/chem.201002388 | INUYUM 789515 | 
|  UCr2(hhpp)4 | doi.org/10.1016/S0277-5387(97)00210-6 | POKMEH 1236376 | 
| Mo2(hhpp)4 | doi.org/10.1016/S0277-5387(97)00210-6 | POKQAH 1236394 | 
| Re2(hhpp)4Cl2 | doi.org/10.1039/a904684d | QAQJOH 1241588 | 
| Re2(hhpp)4F2 | doi.org/10.1021/ic062319b | NICREX 644191 | 
| V2(hhpp)4 | doi.org/10.1016/S0277-5387(97)00210-6 | POKLOQ 1236370 | 
| Cu2(hhpp)2 | doi.org/10.1021/ic980137e | PIMXAK 1233988 | 
|  VRe2(hhpp)4Cl2+ | doi.org/10.1039/b301360j | GABPUV 200385 | 
| Re2(hhpp)4+2 | doi.org/10.1021/ic062319b | NICQUM 644189 | 
| Pd2(hhpp)4 | doi.org/10.1021/ja9832313 | JEFHIL 1184024 | 
| Pd2(hhpp)4Cl2 | doi.org/10.1021/ja9832313 | JEFHOR 114124 | 
|  WCu2(btp)2(CO)2 | doi.org/10.1039/C9DT00486F | COCZOM 1895213 | 
| Cu2(btp)3(CO)2– | doi.org/10.1039/C9DT00486F | COCYIF 1894967 | 
| Cu4(btp)4(CO)4Br– | doi.org/10.1039/C9DT00486F | COCYEB B1894966 | 
| Ru2(btp)2(CO)6 | doi.org/10.1002/cvde.200306242 | OJUPAK 197693. | 
|  XRh2(btp)4(H2O)2 | doi.org/10.1039/c1dt11649e | RAPBAN 840523 | 
| Rh2(btp)2(CH2=CH2)4 | doi.org/10.1039/c2dt12450e | CASVAV 858611 | 
| Rh2(bmp)4(CH3CN)2 | doi.org/10.1016/S0277-5387(00)84092-9 | GIJCOR 1167827 | 
| Ru2(bmp)(CH3COO)(CO)4(PPh3)2 | doi.org/10.1021/om9600708 | TOLYIC 1273773 | 
