25:
39:
53:
805:
Windorff, Cory J.; Sperling, Joseph M.; Albrecht-Schönzart, Thomas E.; Bai, Zhuanling; Evans, William J.; Gaiser, Alyssa N.; Gaunt, Andrew J.; Goodwin, Conrad A. P.; Hobart, David E.; Huffman, Zachary K.; Huh, Daniel N. (2020-09-21).
426:, which in 1968 was the first member of this family to be synthesised and is still viewed as the archetypal example. Other actinocenes that have been synthesised are protactinocene (Pa(C
726:"Two isostructural actinide .pi. complexes. Crystal and molecular structure of bis(cyclooctatetraenyl)uranium(IV), U(C8H8)2, and bis(cyclooctatetraenyl)thorium(IV), Th(C8H8)2"
990:
631:
474:). Especially the latter two, neptunocene and plutonocene, have not been extensively studied experimentally since the 1980s because of the
1274:
808:"A Single Small-Scale Plutonium Redox Reaction System Yields Three Crystallographically-Characterizable Organoplutonium Complexes"
983:
511:
976:
874:
Apostolidis, Christos; Walter, Olaf; Vogt, Jochen; Liebing, Phil; Maron, Laurent; Edelmann, Frank T. (2017-04-24).
593:
1133:
336:
99:
589:"New evidence for 5f covalency in actinocenes determined from carbon K-edge XAS and electronic structure theory"
562:
386:
687:"On the cyclooctatetraenyl compounds of actinide elements part II. Bis-(cyclooctatetraenyl) protactinium(IV)"
928:"f-Orbital covalency in the actinocenes (An = Th–Cm): multiconfigurational studies and topological analysis"
491:
286:
1248:
1236:
1228:
1279:
1117:
1096:
1188:
1109:
944:
763:
De Ridder, D. J. A.; Rebizant, J.; Apostolidis, C.; Kanellakopulos, B.; Dornberger, E. (1996-03-15).
44:
1200:
1172:
1141:
1104:
1061:
1053:
567:
58:
1180:
1125:
1021:
851:
503:
475:
1069:
1013:
999:
905:
843:
835:
827:
784:
745:
706:
627:
95:
1037:
1029:
952:
895:
887:
819:
776:
737:
698:
665:
652:"Uranocene. The First Member of a New Class of Organometallic Derivatives of the f Elements"
601:
87:
30:
1156:
1088:
764:
656:
124:
807:
948:
686:
900:
875:
79:
927:
24:
1268:
855:
702:
495:
487:
935:
550:
238:
823:
724:
Avdeef, Alex; Raymond, Kenneth N.; Hodgson, Keith O.; Zalkin, Allan (1972-05-01).
38:
367:
317:
83:
52:
780:
546:
530:
831:
788:
749:
710:
69:
molecular representations showing the U atom sandwiched between 2 COT ligands
1212:
542:
534:
267:
66:
909:
891:
847:
91:
741:
957:
605:
538:
192:
839:
725:
670:
651:
968:
588:
876:"A Structurally Characterized Organometallic Plutonium(IV) Complex"
769:
510:
and ligand π-orbitals. The covalent component is characterised by
685:
Goffart, J.; Fuger, J.; Brown, D.; Duyckaerts, G. (1974-05-01).
972:
498:
character resulting mainly from the mixing of actinide 6
490:
has been of interest for multiple theoretical studies.
506:, with a smaller interaction involving the actinide 5
1081:
1046:
1006:
123:) bound to an actinide-metal center (An) in the
984:
626:. Butterworth-Heinemann. pp. 1278–1280.
622:Greenwood, Norman N.; Earnshaw, Alan (1997).
587:Minasian, Stefan G.; Keith, Jason M. (2014).
414:The most studied actinocene is uranocene, U(C
8:
991:
977:
969:
645:
643:
956:
899:
669:
127:IV, resulting in the general formula An(C
1251:
146:
880:Angewandte Chemie International Edition
691:Inorganic and Nuclear Chemistry Letters
579:
765:"Bis(cyclooctatetraenyl)neptunium(IV)"
494:methods indicate bonding with a large
514:of electron density to the actinide.
7:
921:
919:
869:
867:
865:
800:
798:
617:
615:
14:
486:The actinide-cyclooctatetraenyl
51:
37:
23:
94:series. They typically have a
1:
824:10.1021/acs.inorgchem.0c01671
545:, but therein the bonding is
98:structure with two dianionic
703:10.1016/0020-1650(74)80119-4
16:Class of chemical compounds
1296:
549:rather than covalent (see
926:Kerridge, Andrew (2014).
781:10.1107/S0108270195013047
624:Chemistry of the Elements
529:compounds also exist for
143:Characterised actinocenes
1275:Organoactinide compounds
563:Organoactinide chemistry
517:Analogous sandwiched M(C
462:), and plutonocene (Pu(C
82:compounds consisting of
502:orbitals with ligand π-
492:Computational chemistry
102:ligands (COT, which is
892:10.1002/anie.201701858
650:Seyferth, D. (2004).
450:), neptunocene (Np(C
167:An–COT distance (Å)
949:2014RSCAd...412078K
943:(24): 12078–12086.
818:(18): 13301–13314.
812:Inorganic Chemistry
742:10.1021/ic50111a034
730:Inorganic Chemistry
568:f-block metallocene
148:
958:10.1039/C3RA47088A
606:10.1039/C3SC52030G
478:hazard they pose.
438:), thorocene (Th(C
147:
100:cyclooctatetraenyl
1262:
1261:
1000:Thorium compounds
886:(18): 5066–5070.
671:10.1021/om0400705
664:(15): 3562–3583.
633:978-0-08-037941-8
412:
411:
1287:
1254:
1152:
1151:
1150:
993:
986:
979:
970:
963:
962:
960:
932:
923:
914:
913:
903:
871:
860:
859:
802:
793:
792:
760:
754:
753:
736:(5): 1083–1088.
721:
715:
714:
682:
676:
675:
673:
647:
638:
637:
619:
610:
609:
584:
396:
346:
296:
161:First synthesis
149:
122:
121:
120:
112:
111:
78:are a family of
55:
41:
31:Skeletal formula
27:
1295:
1294:
1290:
1289:
1288:
1286:
1285:
1284:
1265:
1264:
1263:
1258:
1253:
1249:
1244:
1240:
1232:
1224:
1220:
1216:
1208:
1204:
1196:
1192:
1184:
1176:
1168:
1164:
1160:
1149:
1146:
1145:
1144:
1142:
1137:
1129:
1121:
1113:
1100:
1092:
1077:
1073:
1065:
1057:
1042:
1033:
1025:
1017:
1002:
997:
967:
966:
930:
925:
924:
917:
873:
872:
863:
804:
803:
796:
762:
761:
757:
723:
722:
718:
684:
683:
679:
657:Organometallics
649:
648:
641:
634:
621:
620:
613:
586:
585:
581:
576:
559:
528:
524:
520:
484:
473:
469:
465:
461:
457:
453:
449:
445:
441:
437:
433:
429:
425:
421:
417:
394:
383:
379:
375:
358:
344:
333:
329:
325:
308:
294:
283:
279:
275:
258:
235:
231:
227:
221:Protactinocene
212:
189:
185:
181:
164:Crystal colour
145:
138:
134:
130:
125:oxidation state
119:
116:
115:
114:
110:
107:
106:
105:
103:
73:
72:
71:
70:
63:
62:
61:
56:
48:
47:
42:
34:
33:
28:
17:
12:
11:
5:
1293:
1291:
1283:
1282:
1277:
1267:
1266:
1260:
1259:
1257:
1256:
1246:
1242:
1238:
1234:
1230:
1226:
1222:
1218:
1214:
1210:
1206:
1202:
1198:
1194:
1190:
1186:
1182:
1178:
1174:
1170:
1166:
1162:
1158:
1154:
1147:
1139:
1135:
1131:
1127:
1123:
1119:
1115:
1111:
1107:
1102:
1098:
1094:
1090:
1085:
1083:
1079:
1078:
1076:
1075:
1071:
1067:
1063:
1059:
1055:
1050:
1048:
1044:
1043:
1041:
1040:
1035:
1031:
1027:
1023:
1019:
1015:
1010:
1008:
1004:
1003:
998:
996:
995:
988:
981:
973:
965:
964:
915:
861:
794:
775:(3): 597–600.
755:
716:
697:(5): 413–419.
677:
639:
632:
611:
600:(1): 351–359.
578:
577:
575:
572:
571:
570:
565:
558:
555:
526:
522:
518:
483:
480:
471:
467:
463:
459:
455:
451:
447:
443:
439:
435:
431:
427:
423:
419:
415:
410:
409:
400:
397:
392:
389:
384:
381:
377:
373:
370:
364:
363:
356:
350:
347:
342:
339:
334:
331:
327:
323:
320:
314:
313:
306:
300:
297:
292:
289:
284:
281:
277:
273:
270:
264:
263:
256:
250:
247:
244:
241:
236:
233:
229:
225:
222:
218:
217:
210:
204:
201:
200:bright yellow
198:
195:
190:
187:
183:
179:
176:
172:
171:
168:
165:
162:
159:
156:
153:
144:
141:
136:
132:
128:
117:
108:
80:organoactinide
65:
64:
57:
50:
49:
45:Ball-and-stick
43:
36:
35:
29:
22:
21:
20:
19:
18:
15:
13:
10:
9:
6:
4:
3:
2:
1292:
1281:
1278:
1276:
1273:
1272:
1270:
1255:
1247:
1245:
1235:
1233:
1227:
1225:
1211:
1209:
1199:
1197:
1187:
1185:
1179:
1177:
1171:
1169:
1155:
1153:
1140:
1138:
1132:
1130:
1124:
1122:
1116:
1114:
1108:
1106:
1103:
1101:
1095:
1093:
1087:
1086:
1084:
1080:
1074:
1068:
1066:
1060:
1058:
1052:
1051:
1049:
1045:
1039:
1036:
1034:
1028:
1026:
1020:
1018:
1012:
1011:
1009:
1005:
1001:
994:
989:
987:
982:
980:
975:
974:
971:
959:
954:
950:
946:
942:
938:
937:
929:
922:
920:
916:
911:
907:
902:
897:
893:
889:
885:
881:
877:
870:
868:
866:
862:
857:
853:
849:
845:
841:
837:
833:
829:
825:
821:
817:
813:
809:
801:
799:
795:
790:
786:
782:
778:
774:
770:
766:
759:
756:
751:
747:
743:
739:
735:
731:
727:
720:
717:
712:
708:
704:
700:
696:
692:
688:
681:
678:
672:
667:
663:
659:
658:
653:
646:
644:
640:
635:
629:
625:
618:
616:
612:
607:
603:
599:
596:
595:
590:
583:
580:
573:
569:
566:
564:
561:
560:
556:
554:
552:
551:lanthanocenes
548:
544:
540:
536:
532:
515:
513:
509:
505:
501:
497:
493:
489:
481:
479:
477:
408:
404:
401:
398:
393:
390:
388:
385:
371:
369:
366:
365:
362:
354:
351:
348:
343:
340:
338:
335:
321:
319:
316:
315:
312:
304:
301:
298:
293:
290:
288:
285:
271:
269:
266:
265:
262:
254:
251:
248:
245:
242:
240:
237:
223:
220:
219:
216:
208:
205:
202:
199:
196:
194:
191:
177:
174:
173:
169:
166:
163:
160:
157:
154:
151:
150:
142:
140:
126:
101:
97:
93:
89:
85:
81:
77:
68:
60:
59:Space-filling
54:
46:
40:
32:
26:
1280:Metallocenes
940:
936:RSC Advances
934:
883:
879:
815:
811:
772:
768:
758:
733:
729:
719:
694:
690:
680:
661:
655:
623:
597:
592:
582:
547:mostly ionic
516:
507:
499:
485:
413:
406:
402:
360:
352:
345:yellow-brown
310:
302:
260:
252:
214:
206:
170:Space group
84:metallocenes
75:
74:
531:lanthanides
368:Plutonocene
318:Neptunocene
86:containing
76:Actinocenes
1269:Categories
594:Chem. Sci.
574:References
295:deep green
246:yellowish
175:Thorocene
158:An centre
856:221623763
832:0020-1669
789:0108-2701
750:0020-1669
711:0020-1650
476:radiation
268:Uranocene
90:from the
67:Uranocene
1229:Th(HCOO)
910:28371148
848:32910649
557:See also
512:donation
504:orbitals
496:covalent
395:dark red
155:Formula
96:sandwich
92:actinide
88:elements
1047:Th(III)
945:Bibcode
901:5485009
840:1680020
488:bonding
482:Bonding
1189:Th(SeO
1097:Th(OH)
1082:Th(IV)
1007:Th(II)
908:
898:
854:
846:
838:
830:
787:
748:
709:
630:
541:, and
399:1.898
349:1.909
299:1.926
203:2.004
1237:Th(CH
1201:Th(NO
1134:ThSiO
931:(PDF)
852:S2CID
391:1970
341:1970
291:1968
243:1974
197:1969
152:Name
1241:COO)
1213:Th(C
1181:ThSe
1157:Th(C
1143:ThOF
1110:ThCl
1054:ThCl
1022:ThCl
906:PMID
844:PMID
836:OSTI
828:ISSN
785:ISSN
746:ISSN
707:ISSN
628:ISBN
533:M =
372:Pu(C
322:Np(C
224:Pa(C
178:Th(C
1250:ThP
1173:ThS
1126:ThI
1118:ThF
1105:ThC
1089:ThO
1070:ThI
1062:ThF
1038:ThO
1030:ThI
1014:ThC
953:doi
896:PMC
888:doi
820:doi
777:doi
738:doi
699:doi
666:doi
602:doi
553:).
272:U(C
1271::
951:.
939:.
933:.
918:^
904:.
894:.
884:56
882:.
878:.
864:^
850:.
842:.
834:.
826:.
816:59
814:.
810:.
797:^
783:.
773:52
771:.
767:.
744:.
734:11
732:.
728:.
705:.
695:10
693:.
689:.
662:23
660:.
654:.
642:^
614:^
591:.
543:Yb
539:Tb
537:,
535:Nd
405:2/
387:Pu
337:Np
249:–
239:Pa
193:Th
139:.
1252:7
1243:4
1239:3
1231:4
1223:2
1221:)
1219:8
1217:H
1215:8
1207:4
1205:)
1203:3
1195:2
1193:)
1191:4
1183:2
1175:2
1167:2
1165:)
1163:4
1161:O
1159:2
1148:2
1136:4
1128:4
1120:4
1112:4
1099:4
1091:2
1072:3
1064:3
1056:3
1032:2
1024:2
1016:2
992:e
985:t
978:v
961:.
955::
947::
941:4
912:.
890::
858:.
822::
791:.
779::
752:.
740::
713:.
701::
674:.
668::
636:.
608:.
604::
598:5
527:2
525:)
523:8
521:H
519:8
508:f
500:d
472:2
470:)
468:8
466:H
464:8
460:2
458:)
456:8
454:H
452:8
448:2
446:)
444:8
442:H
440:8
436:2
434:)
432:8
430:H
428:8
424:2
422:)
420:8
418:H
416:8
407:m
403:I
382:2
380:)
378:8
376:H
374:8
361:n
359:/
357:1
355:2
353:P
332:2
330:)
328:8
326:H
324:8
311:n
309:/
307:1
305:2
303:P
287:U
282:2
280:)
278:8
276:H
274:8
261:n
259:/
257:1
255:2
253:P
234:2
232:)
230:8
228:H
226:8
215:n
213:/
211:1
209:2
207:P
188:2
186:)
184:8
182:H
180:8
137:2
135:)
133:8
131:H
129:8
118:8
113:H
109:8
104:C
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