850:
31:
835:
362:
256:
2247:
2098:
294:
2166:
2003:
1001:
816:
898:
108:
868:
909:
usually follows the reaction scheme shown above with a few more added steps that are sometimes needed to synthesize the trichlorides from the commercially supplied oxides. Nevertheless, other syntheses are also used by some authors: alkali metal cyclopentadienides can be used instead of the beryllium
980:
These compounds have been known since the sixties, however until 2018 only the neptunium compound was structurally characterised. Kovàcs and coworkers were able to analyse the plutonium and uranium complexes, finding that all three structures were similar, with an asymmetrical distribution of
845:
The neptunium equivalent with the trisubstituted COT’’’ has also been reported and the complexes of both the tri- and di- substituted ligands with thorium and uranium are well known. They were synthesized according to the following reaction schemes:
214:
Uranium and thorium both form metallacycles with a diverse chemistry. These complexes are very labile so trimethylsilyl groups are again present for protection. These compounds are formed by reacting weaker alkylating agents
800:
The tetraphenylcyclooctatetraene complex was found to be completely air stable by
Streitwieser. This high stability is probably due to the hindering effects of the phenyl groups, protecting the U center from an attack by
823:
Plutonium also forms a sandwich complex with 1,4-bis(trimethylsilyl)cyclooctatetraenyl (1,4-COT’’) and its 1,3 isomer. This compound is prepared by the oxidation of the anionic green Pu(III) complex Li(THF)
662:
1162:
Edwards PG, Andersen RA, Zalkin A (February 1984). "Preparation of tetraalkyl phosphine complexes of the f-block metals. Crystal structure of Th(CH2Ph)4(Me2PCH2CH2PMe2) and U(CH2Ph)3Me(Me2PCH2CH2PMe2)".
559:
777:
1135:
Lauke H, Swepston PJ, Marks TJ (October 1984). "Synthesis and characterization of a homoleptic actinide alkyl. The heptamethylthorate(IV) ion: a complex with seven metal-carbon .sigma. bonds".
478:
206:
containing complexes of thorium and uranium tetramethyls have also been made, using dmpe as the organophosphorus ligand stabilising the structure (amides can also assume this role).
831:
which leads to the formation of Pu(1,4-COT’’)(1,3-COT’’). The reaction is easily noticeable by the THF solution changing to a dark red colour, characteristic of Pu(IV).
1227:
Streitwieser Jr A, Mueller-Westerhoff U (1968-12-01). "Bis(cyclooctatetraenyl)uranium (uranocene). A new class of sandwich complexes that utilize atomic f orbitals".
1681:
1420:
Tassell MJ, Kaltsoyannis N (August 2010). "Covalency in AnCp4 (An = Th-Cm): a comparison of molecular orbital, natural population and atoms-in-molecules analyses".
849:
1491:
Laubereau PG, Burns JH (May 1970). "Microchemical preparation of tricyclopentadienyl compounds of berkelium, californium, and some lanthanide elements".
671:
and thorocene were made similarly using the tetrachlorides. Plutonocene is the exception here: as there is no stable plutonium(IV) chloride known, (Hpy)
309:
Actinides form sandwich complexes with cyclooctatetraene analogously to how transition metals react with cyclopentadienyl ligands. Actinide ions have
1457:"One ligand fits all: lanthanide and actinide sandwich complexes comprising the 1, 4-bis (trimethylsilyl) cyclooctatetraenyl (= COT′′) ligand"
1674:
2379:
1263:
1212:
567:
686:. Trivalent actinides form ionic compounds with COT ligands, this can be exemplified by the reaction of americium triiodide with K
133:, inspired by the volatility of main group organometallics. However he noticed that these compounds tend to be highly unstable.
1667:
486:
1344:
Streitwieser A, Walker R (September 1975). "Bis-π-(1,3,5,7-tetraphenylcyclooctatetraene)uranium, an air stable uranocene".
696:
385:
981:
cylopentadienide ligands and a higher covalent character to the carbon-actinide bond than in organolanthanide compounds.
1518:
Baumgärtner, F.; Fischer, E. O.; Kanellakopulos, B.; Laubereau, P. (1966-01-07). "Tri-cyclopentadienyl-americium(III)".
30:
394:
2236:
2231:
2226:
2221:
2216:
2211:
2206:
2201:
2196:
2191:
2186:
2181:
2171:
2114:
2008:
1929:
1924:
1781:
2272:
1974:
1944:
1934:
1914:
1902:
1870:
1835:
1803:
1771:
1766:
1726:
1019:
1741:
1705:
1659:
834:
2078:
2073:
2058:
2043:
2023:
2018:
1969:
1897:
1880:
1830:
1825:
1820:
1815:
1791:
1751:
994:
377:
2267:
2257:
2068:
2053:
2038:
2028:
2013:
1954:
1939:
1919:
1909:
1890:
1885:
1875:
1865:
1808:
1776:
1014:
46:
1746:
1736:
1287:
Starks DF, Parsons TC, Streitwieser A, Edelstein N (June 1974). "Bis(.pi.-cyclooctatetraene)protactinium".
1100:
Seaman LA, Walensky JR, Wu G, Hayton TW (April 2013). "In pursuit of homoleptic actinide alkyl complexes".
195:
On the other hand, only one homoleptic thorium alkyl is known. The seven coordinate heptamethylthorate(IV)
63:
Like most organometallic compounds, the organoactinides are air sensitive and need to be handled using the
2176:
2091:
2033:
1996:
1991:
1979:
1959:
1949:
1855:
1850:
1845:
1786:
1761:
876:
1455:
Rausch J, Apostolidis C, Walter O, Lorenz V, Hrib CG, Hilfert L, Kühling M, Busse S, Edelmann FT (2015).
1984:
1796:
1731:
1721:
911:
373:
144:
137:
790:
Many substituted uranocenes have been synthesized. The methodology followed was the same as for simple
2063:
2048:
1860:
1840:
1554:
154:
682:
The later actinides also form complexes with COT but these don't usually assume the classic neutral
1964:
828:
329:
177:
64:
1619:
1570:
1437:
1402:
1269:
1259:
1208:
1117:
812:, in which they form green solutions that are more air sensitive than the crystalline solids.
683:
302:
298:
273:
226:
1648:
1609:
1601:
1562:
1527:
1500:
1468:
1429:
1392:
1384:
1353:
1323:
1296:
1236:
1200:
1172:
1144:
1109:
203:
84:
351:
269:
1558:
1204:
1636:
1614:
1589:
1397:
1372:
158:
1357:
129:
Attempts to synthesize uranium alkyls were first made during the
Manhattan project by
2373:
2336:
355:
310:
217:
199:
was synthesized in 1984 using a similar procedure to the equivalent uranium complex.
57:
1314:
Streitwieser A, Harmon CA (1973-05-01). "Uranocenes with hydrocarbon substituents".
255:
361:
130:
1652:
1590:"Solid-State Structure of Tris-Cyclopentadienide Uranium(III) and Plutonium(III)"
1566:
1063:
1046:
1024:
891:
887:
668:
1371:
Apostolidis C, Walter O, Vogt J, Liebing P, Maron L, Edelmann FT (April 2017).
293:
1000:
897:
815:
151:
88:
17:
1531:
1273:
328:
The first example of this type of chemical species was discovered in 1968 by
1029:
333:
277:
1623:
1605:
1574:
1441:
1406:
1388:
1121:
107:
797:, but the properties of some of the compounds were found to be different.
99:
chemistry as these are the most easily handleable elements of this group.
372:
Bis(cyclooctatetraene)protactinium was first prepared in 1973 by turning
54:
1504:
1327:
1300:
1240:
1176:
1148:
808:
All these derivatives are much more soluble in organic solvents such as
1473:
1456:
809:
96:
92:
80:
76:
1195:
Behrle AC, Walensky JR (2015), "Actinides: Organometallic
Chemistry",
1113:
997:
reaction from potassium cyclopentadienide using benzene as a solvent.
41:
is the science exploring the properties, structure, and reactivity of
1691:
1433:
802:
50:
446:
1373:"A Structurally Characterized Organometallic Plutonium(IV) Complex"
276:(COT) and their derivatives as ligands. These usually take part in
1588:
Apostolidis C, Dutkiewicz MS, Kovács A, Walter O (February 2018).
999:
896:
866:
848:
833:
381:
360:
292:
254:
196:
106:
29:
1545:
Marks TJ (September 1982). "Actinide organometallic chemistry".
871:
The general structure of tris(cyclopentadiene)actinide complexes
867:
369:
Most tetravalent actinides react similarly to form actinocenes:
237:
are too strong and lead to the formation of simple alkyls) with
34:
Tetrakis(cyclopentadienyl)thorium(IV) an organoactinide compound
1663:
879:
elements form compounds with cyclopentadiene with the formula
657:{\displaystyle {\ce {PaCl4 + 2K2(COT) -> Pa(COT)2 + 4KCl}}}
27:
Study of chemical compounds containing actinide-carbon bonds
989:
Tetravalent thorium, uranium and neptunium easily form MCp
765:
727:
711:
640:
602:
582:
547:
531:
505:
466:
438:
422:
409:
782:
This compound is present in solution as the THF adduct.
554:{\displaystyle {\ce {3PaCl5 + Al -> 3PaCl4 + AlCl3}}}
280:, donating electron density through their pi orbitals.
772:{\displaystyle {\ce {AmI3 + K2(COT) -> KAm(COT)2}}}
910:
complex, and An(IV) complexes can also be used via a
838:
The structures of Pu(3-COT’’)(4-COT’’) and Np(COT’’’)
699:
570:
489:
397:
1197:
Encyclopedia of
Inorganic and Bioinorganic Chemistry
125:, the first uranium alkyl compound to be synthesized
2328:
894:equivalent having been observed in the gas phase.
771:
656:
553:
472:
136:Marks and Seyam attempted to synthesize them from
473:{\displaystyle {\ce {Pa2O5 + SOCl2 -> PaCl5}}}
384:it with aluminium powder before reacting it with
358:green solid that is otherwise quite unreactive.
268:A large majority of the organoactinides involve
317:compounds, so that they prefer to react with C
1675:
1639:(1982). "Actinide Organometallic Chemistry".
75:Most common organoactinide complexes involve
8:
985:Tetrakis(cyclopentadienyl)actinide complexes
886:. These complexes have been isolated up to
786:Complexes of substituted cyclooctatetraenes
1682:
1668:
1660:
1199:, American Cancer Society, pp. 1–41,
1694:with other elements in the periodic table
1613:
1472:
1396:
764:
759:
748:
730:
726:
721:
710:
705:
700:
698:
649:
639:
634:
623:
605:
601:
596:
591:
581:
576:
571:
569:
546:
541:
530:
525:
520:
504:
499:
494:
490:
488:
465:
460:
441:
437:
432:
421:
416:
408:
403:
398:
396:
1229:Journal of the American Chemical Society
1137:Journal of the American Chemical Society
916:
882:
863:Tris(cyclopentadienyl)actinide complexes
814:
793:
346:
339:
248:
244:
240:
232:
228:
219:
187:
183:
172:
168:
164:
121:
117:
113:
1089:
354:at 0 °C. The compound itself is a
264:Organometallic complexes with π-bonding
150:In 1989, a group finally synthesized a
71:Organometallic complexes with σ-bonding
1711:
87:, but there are a few exceptions with
1486:
1484:
819:Substituted cyclooctatetraene ligands
7:
2353:Academic research, no widespread use
1339:
1337:
1190:
1188:
1186:
1095:
1093:
1346:Journal of Organometallic Chemistry
1205:10.1002/9781119951438.eibc0002.pub2
365:The original synthesis of uranocene
901:An = Th, U, Np, Pu, Am, Cm, Bk, Cf
25:
1256:Lanthanide and Actinide Chemistry
259:a uranium-containing metallacycle
176:. Since then, variants of higher
2245:
2164:
2096:
2001:
1701:
147:, but these decomposed quickly.
755:
749:
741:
737:
731:
630:
624:
616:
612:
606:
514:
313:that are too large to form MCp
1:
1594:Chemistry: A European Journal
1358:10.1016/S0022-328X(00)89316-X
386:potassium cyclooctatetraenide
1653:10.1126/science.217.4564.989
1567:10.1126/science.217.4564.989
192:have also been synthesized.
284:Cyclooctatetraene complexes
2396:
2242:
2161:
1713:
1709:
1699:
1258:. John Wiley & Sons.
1020:Organoneptunium chemistry
905:The synthesis of the AnCp
858:Cyclopentadiene complexes
2380:Organoactinide compounds
1532:10.1002/ange.19660780113
1461:New Journal of Chemistry
103:Alkyl and aryl compounds
47:organometallic compounds
43:organoactinide compounds
39:Organoactinide chemistry
1254:Cotton, Simon. (2013).
1015:Organouranium chemistry
2348:Many uses in chemistry
2343:Core organic chemistry
1606:10.1002/chem.201704845
1389:10.1002/anie.201701858
1005:
902:
872:
854:
842:
820:
773:
658:
555:
474:
366:
306:
260:
145:organolithium reagents
126:
35:
1003:
912:reductive elimination
900:
870:
852:
837:
818:
774:
659:
556:
475:
374:protactinium(V) oxide
364:
296:
258:
110:
33:
697:
568:
487:
395:
178:coordination numbers
1559:1982Sci...217..989M
1505:10.1021/ic50087a018
1493:Inorganic Chemistry
1422:Dalton Transactions
1328:10.1021/ic50123a024
1316:Inorganic Chemistry
1301:10.1021/ic50136a011
1289:Inorganic Chemistry
1241:10.1021/ja01028a044
1177:10.1021/om00080a023
1149:10.1021/ja00334a062
1102:Inorganic Chemistry
923:
918:The colours of AnCp
829:cobalt(II) chloride
767:
729:
713:
642:
604:
584:
549:
533:
507:
468:
453:
440:
424:
411:
330:Andrew Streitwieser
65:appropriate methods
1474:10.1039/c5nj00991j
1006:
917:
903:
873:
855:
843:
821:
769:
747:
717:
701:
684:sandwich structure
654:
622:
592:
572:
551:
537:
521:
495:
470:
456:
428:
412:
399:
367:
307:
261:
127:
36:
2367:
2366:
2323:
2322:
1647:(4564): 989–997.
1600:(12): 2841–2844.
1520:Angewandte Chemie
1383:(18): 5066–5070.
1377:Angewandte Chemie
1143:(22): 6841–6843.
1114:10.1021/ic300867m
978:
977:
754:
746:
736:
720:
704:
652:
629:
621:
611:
595:
575:
540:
524:
513:
498:
459:
454:
431:
415:
402:
303:Cyclooctatetraene
299:Sandwich compound
274:Cyclooctatetraene
16:(Redirected from
2387:
2359:
2354:
2349:
2344:
2249:
2248:
2168:
2167:
2100:
2099:
2005:
2004:
1702:
1684:
1677:
1670:
1661:
1656:
1628:
1627:
1617:
1585:
1579:
1578:
1553:(4564): 989–97.
1542:
1536:
1535:
1515:
1509:
1508:
1499:(5): 1091–1095.
1488:
1479:
1478:
1476:
1452:
1446:
1445:
1434:10.1039/c000704h
1417:
1411:
1410:
1400:
1368:
1362:
1361:
1341:
1332:
1331:
1322:(5): 1102–1104.
1311:
1305:
1304:
1295:(6): 1307–1308.
1284:
1278:
1277:
1251:
1245:
1244:
1224:
1218:
1217:
1192:
1181:
1180:
1159:
1153:
1152:
1132:
1126:
1125:
1097:
924:
885:
796:
778:
776:
775:
770:
768:
766:
763:
758:
752:
744:
740:
734:
728:
725:
718:
712:
709:
702:
679:had to be used.
663:
661:
660:
655:
653:
650:
641:
638:
633:
627:
619:
615:
609:
603:
600:
593:
583:
580:
573:
560:
558:
557:
552:
550:
548:
545:
538:
532:
529:
522:
511:
506:
503:
496:
479:
477:
476:
471:
469:
467:
464:
457:
455:
442:
439:
436:
429:
423:
420:
413:
410:
407:
400:
349:
342:
278:η- and η-bonding
270:Cyclopentadienyl
251:
239:ClAn[N(Si(CH
236:
223:
191:
175:
124:
85:cyclopentadienyl
21:
2395:
2394:
2390:
2389:
2388:
2386:
2385:
2384:
2370:
2369:
2368:
2363:
2362:
2357:
2352:
2347:
2342:
2324:
2246:
2165:
2097:
2002:
1695:
1688:
1637:Marks, Tobin J.
1635:
1632:
1631:
1587:
1586:
1582:
1544:
1543:
1539:
1517:
1516:
1512:
1490:
1489:
1482:
1467:(10): 7656–66.
1454:
1453:
1449:
1428:(29): 6719–25.
1419:
1418:
1414:
1370:
1369:
1365:
1343:
1342:
1335:
1313:
1312:
1308:
1286:
1285:
1281:
1266:
1253:
1252:
1248:
1226:
1225:
1221:
1215:
1194:
1193:
1184:
1165:Organometallics
1161:
1160:
1156:
1134:
1133:
1129:
1099:
1098:
1091:
1086:
1077:
1073:
1069:
1060:
1056:
1052:
1043:
1039:
1035:
1011:
993:compounds by a
992:
987:
921:
908:
884:
880:
875:Most trivalent
865:
860:
841:
826:
795:
791:
788:
695:
694:
689:
678:
674:
566:
565:
485:
484:
393:
392:
352:tetrahydrofuran
348:
344:
341:
337:
332:, who prepared
324:
320:
316:
291:
286:
266:
250:
246:
242:
238:
234:
230:
225:
221:
216:
212:
189:
185:
182:[Li(TMEDA)]
181:
174:
170:
166:
162:
141:
123:
119:
115:
111:
105:
73:
28:
23:
22:
15:
12:
11:
5:
2393:
2391:
2383:
2382:
2372:
2371:
2365:
2364:
2361:
2360:
2355:
2350:
2345:
2340:
2337:Chemical bonds
2333:
2332:
2330:
2326:
2325:
2321:
2320:
2315:
2310:
2305:
2300:
2295:
2290:
2285:
2280:
2275:
2270:
2265:
2260:
2255:
2250:
2243:
2240:
2239:
2234:
2229:
2224:
2219:
2214:
2209:
2204:
2199:
2194:
2189:
2184:
2179:
2174:
2169:
2162:
2159:
2158:
2154:
2153:
2150:
2147:
2144:
2141:
2138:
2135:
2132:
2129:
2126:
2123:
2120:
2117:
2112:
2109:
2106:
2101:
2094:
2089:
2085:
2084:
2081:
2076:
2071:
2066:
2061:
2056:
2051:
2046:
2041:
2036:
2031:
2026:
2021:
2016:
2011:
2006:
1999:
1994:
1988:
1987:
1982:
1977:
1972:
1967:
1962:
1957:
1952:
1947:
1942:
1937:
1932:
1927:
1922:
1917:
1912:
1907:
1905:
1900:
1894:
1893:
1888:
1883:
1878:
1873:
1868:
1863:
1858:
1853:
1848:
1843:
1838:
1833:
1828:
1823:
1818:
1813:
1811:
1806:
1800:
1799:
1794:
1789:
1784:
1779:
1774:
1769:
1764:
1758:
1757:
1754:
1749:
1744:
1739:
1734:
1729:
1724:
1718:
1717:
1714:
1712:
1710:
1708:
1700:
1697:
1696:
1689:
1687:
1686:
1679:
1672:
1664:
1658:
1657:
1630:
1629:
1580:
1537:
1526:(1): 112–113.
1510:
1480:
1447:
1412:
1363:
1352:(3): C41–C42.
1333:
1306:
1279:
1264:
1246:
1219:
1213:
1182:
1171:(2): 293–298.
1154:
1127:
1108:(7): 3556–64.
1088:
1087:
1085:
1082:
1081:
1080:
1079:
1078:
1075:
1071:
1067:
1061:
1058:
1054:
1050:
1044:
1041:
1037:
1033:
1022:
1017:
1010:
1007:
990:
986:
983:
976:
975:
972:
969:
966:
963:
960:
957:
954:
950:
949:
946:
943:
940:
937:
934:
931:
928:
919:
906:
864:
861:
859:
856:
839:
824:
787:
784:
780:
779:
762:
757:
751:
743:
739:
733:
724:
716:
708:
687:
676:
672:
666:
665:
648:
645:
637:
632:
626:
618:
614:
608:
599:
590:
587:
579:
562:
561:
544:
536:
528:
519:
516:
510:
502:
493:
481:
480:
463:
452:
449:
445:
435:
427:
419:
406:
325:ions instead.
322:
318:
314:
290:
287:
285:
282:
265:
262:
211:
208:
159:trimethylsilyl
139:
104:
101:
72:
69:
26:
24:
18:Organoactinide
14:
13:
10:
9:
6:
4:
3:
2:
2392:
2381:
2378:
2377:
2375:
2356:
2351:
2346:
2341:
2338:
2335:
2334:
2331:
2327:
2319:
2316:
2314:
2311:
2309:
2306:
2304:
2301:
2299:
2296:
2294:
2291:
2289:
2286:
2284:
2281:
2279:
2276:
2274:
2271:
2269:
2266:
2264:
2261:
2259:
2256:
2254:
2251:
2244:
2241:
2238:
2235:
2233:
2230:
2228:
2225:
2223:
2220:
2218:
2215:
2213:
2210:
2208:
2205:
2203:
2200:
2198:
2195:
2193:
2190:
2188:
2185:
2183:
2180:
2178:
2175:
2173:
2170:
2163:
2160:
2156:
2155:
2151:
2148:
2145:
2142:
2139:
2136:
2133:
2130:
2127:
2124:
2121:
2118:
2116:
2113:
2110:
2107:
2105:
2102:
2095:
2093:
2090:
2087:
2086:
2082:
2080:
2077:
2075:
2072:
2070:
2067:
2065:
2062:
2060:
2057:
2055:
2052:
2050:
2047:
2045:
2042:
2040:
2037:
2035:
2032:
2030:
2027:
2025:
2022:
2020:
2017:
2015:
2012:
2010:
2007:
2000:
1998:
1995:
1993:
1990:
1989:
1986:
1983:
1981:
1978:
1976:
1973:
1971:
1968:
1966:
1963:
1961:
1958:
1956:
1953:
1951:
1948:
1946:
1943:
1941:
1938:
1936:
1933:
1931:
1928:
1926:
1923:
1921:
1918:
1916:
1913:
1911:
1908:
1906:
1904:
1901:
1899:
1896:
1895:
1892:
1889:
1887:
1884:
1882:
1879:
1877:
1874:
1872:
1869:
1867:
1864:
1862:
1859:
1857:
1854:
1852:
1849:
1847:
1844:
1842:
1839:
1837:
1834:
1832:
1829:
1827:
1824:
1822:
1819:
1817:
1814:
1812:
1810:
1807:
1805:
1802:
1801:
1798:
1795:
1793:
1790:
1788:
1785:
1783:
1780:
1778:
1775:
1773:
1770:
1768:
1765:
1763:
1760:
1759:
1755:
1753:
1750:
1748:
1745:
1743:
1740:
1738:
1735:
1733:
1730:
1728:
1725:
1723:
1720:
1719:
1715:
1707:
1704:
1703:
1698:
1693:
1690:Compounds of
1685:
1680:
1678:
1673:
1671:
1666:
1665:
1662:
1654:
1650:
1646:
1642:
1638:
1634:
1633:
1625:
1621:
1616:
1611:
1607:
1603:
1599:
1595:
1591:
1584:
1581:
1576:
1572:
1568:
1564:
1560:
1556:
1552:
1548:
1541:
1538:
1533:
1529:
1525:
1522:(in German).
1521:
1514:
1511:
1506:
1502:
1498:
1494:
1487:
1485:
1481:
1475:
1470:
1466:
1462:
1458:
1451:
1448:
1443:
1439:
1435:
1431:
1427:
1423:
1416:
1413:
1408:
1404:
1399:
1394:
1390:
1386:
1382:
1378:
1374:
1367:
1364:
1359:
1355:
1351:
1347:
1340:
1338:
1334:
1329:
1325:
1321:
1317:
1310:
1307:
1302:
1298:
1294:
1290:
1283:
1280:
1275:
1271:
1267:
1265:9781118681367
1261:
1257:
1250:
1247:
1242:
1238:
1234:
1230:
1223:
1220:
1216:
1214:9781119951438
1210:
1206:
1202:
1198:
1191:
1189:
1187:
1183:
1178:
1174:
1170:
1166:
1158:
1155:
1150:
1146:
1142:
1138:
1131:
1128:
1123:
1119:
1115:
1111:
1107:
1103:
1096:
1094:
1090:
1083:
1065:
1062:
1048:
1045:
1031:
1028:
1027:
1026:
1023:
1021:
1018:
1016:
1013:
1012:
1008:
1004:An= Th, U, Np
1002:
998:
996:
984:
982:
973:
970:
967:
964:
961:
958:
955:
952:
951:
947:
944:
941:
938:
935:
932:
929:
926:
925:
915:
913:
899:
895:
893:
889:
878:
869:
862:
857:
851:
847:
836:
832:
830:
817:
813:
811:
806:
804:
798:
785:
783:
760:
722:
714:
706:
693:
692:
691:
685:
680:
670:
646:
643:
635:
597:
588:
585:
577:
564:
563:
542:
534:
526:
517:
508:
500:
491:
483:
482:
461:
450:
447:
443:
433:
425:
417:
404:
391:
390:
389:
387:
383:
379:
378:pentachloride
375:
370:
363:
359:
357:
353:
335:
331:
326:
312:
304:
300:
295:
288:
283:
281:
279:
275:
271:
263:
257:
253:
252:(An = Th, U).
235:
222:
210:Metallacycles
209:
207:
205:
200:
198:
193:
179:
163:U[CH(SiMe
160:
156:
153:
148:
146:
142:
134:
132:
112:U[CH(SiMe
109:
102:
100:
98:
94:
90:
86:
82:
78:
70:
68:
66:
61:
59:
58:chemical bond
56:
52:
49:containing a
48:
44:
40:
32:
19:
2358:Bond unknown
2317:
2312:
2307:
2302:
2297:
2292:
2287:
2282:
2277:
2262:
2252:
2103:
1644:
1640:
1597:
1593:
1583:
1550:
1546:
1540:
1523:
1519:
1513:
1496:
1492:
1464:
1460:
1450:
1425:
1421:
1415:
1380:
1376:
1366:
1349:
1345:
1319:
1315:
1309:
1292:
1288:
1282:
1255:
1249:
1235:(26): 7364.
1232:
1228:
1222:
1196:
1168:
1164:
1157:
1140:
1136:
1130:
1105:
1101:
988:
979:
904:
874:
844:
822:
807:
799:
789:
781:
681:
667:
371:
368:
336:by reacting
327:
311:atomic radii
308:
267:
213:
201:
194:
149:
135:
131:Henry Gilman
128:
91:, namely in
74:
62:
45:, which are
42:
38:
37:
1064:Plutonocene
1047:Neptunocene
1025:Actinocenes
968:colourless
959:pale green
922:complexes:
914:reaction.
892:einsteinium
890:, with the
888:californium
669:Neptunocene
289:Actinocenes
1084:References
995:metathesis
853:An = Th, U
356:pyrophoric
152:homoleptic
2339:to carbon
1274:897575995
1030:Uranocene
742:⟶
617:⟶
515:⟶
376:into the
334:uranocene
301:with two
204:phosphine
89:σ-bonding
77:π-bonding
2374:Category
1624:29193373
1575:17839316
1442:20631951
1407:28371148
1122:22716022
1009:See also
444:→
382:reducing
272:(Cp) or
186:[UMe
180:such as
161:groups:
83:such as
55:actinide
2157:
1641:Science
1615:5861669
1555:Bibcode
1547:Science
1398:5485009
877:f block
810:benzene
305:ligands
155:complex
97:uranium
93:thorium
81:ligands
2329:Legend
1692:carbon
1622:
1612:
1573:
1440:
1405:
1395:
1272:
1262:
1211:
1120:
1066:, Pu(C
1049:, Np(C
971:amber
965:flesh
962:green
956:brown
953:green
803:oxygen
792:U(COT)
338:K(COT)
202:Mixed
143:using
51:carbon
1032:, U(C
881:M(Cp)
827:with
690:COT.
343:with
227:Mg(CH
197:anion
157:with
79:with
1620:PMID
1571:PMID
1438:PMID
1403:PMID
1270:OCLC
1260:ISBN
1209:ISBN
1118:PMID
974:red
675:PuCl
574:PaCl
539:AlCl
523:PaCl
497:PaCl
458:PaCl
430:SOCl
380:and
224:and
218:LiCH
95:and
2303:CEs
2298:CCf
2293:CBk
2288:CCm
2283:CAm
2278:CPu
2273:CNp
2263:CPa
2258:CTh
2237:CYb
2232:CTm
2227:CEr
2222:CHo
2217:CDy
2212:CTb
2207:CGd
2202:CEu
2197:CSm
2192:CPm
2187:CNd
2182:CPr
2177:CCe
2172:CLa
2152:Og
2149:Ts
2146:Lv
2143:Mc
2140:Fl
2137:Nh
2134:Cn
2131:Rg
2128:Ds
2125:Mt
2122:Hs
2119:Bh
2115:CSg
2111:Db
2108:Rf
2092:CRa
2088:Fr
2083:Rn
2079:CAt
2074:CPo
2069:CBi
2064:CPb
2059:CTl
2054:CHg
2049:CAu
2044:CPt
2039:CIr
2034:COs
2029:CRe
2019:CTa
2014:CHf
2009:CLu
1997:CBa
1992:CCs
1985:CXe
1975:CTe
1970:CSb
1965:CSn
1960:CIn
1955:CCd
1950:CAg
1945:CPd
1940:CRh
1935:CRu
1930:CTc
1925:CMo
1920:CNb
1915:CZr
1903:CSr
1898:CRb
1891:CKr
1886:CBr
1881:CSe
1876:CAs
1871:CGe
1866:CGa
1861:CZn
1856:CCu
1851:CNi
1846:CCo
1841:CFe
1836:CMn
1831:CCr
1821:CTi
1816:CSc
1809:CCa
1797:CAr
1792:CCl
1777:CSi
1772:CAl
1767:CMg
1762:CNa
1756:Ne
1727:CBe
1722:CLi
1716:He
1649:doi
1645:217
1610:PMC
1602:doi
1563:doi
1551:217
1528:doi
1501:doi
1469:doi
1430:doi
1393:PMC
1385:doi
1354:doi
1324:doi
1297:doi
1237:doi
1201:doi
1173:doi
1145:doi
1141:106
1110:doi
948:Cf
945:Bk
942:Cm
939:Am
936:Pu
933:Np
927:Th
753:COT
745:KAm
735:COT
703:AmI
651:KCl
628:COT
610:COT
448:400
350:in
345:UCl
138:UCl
53:to
2376::
2318:No
2313:Md
2308:Fm
2268:CU
2253:Ac
2104:Lr
2024:CW
1980:CI
1910:CY
1826:CV
1804:CK
1787:CS
1782:CP
1752:CF
1747:CO
1742:CN
1737:CC
1732:CB
1706:CH
1643:.
1618:.
1608:.
1598:24
1596:.
1592:.
1569:.
1561:.
1549:.
1524:78
1495:.
1483:^
1465:39
1463:.
1459:.
1436:.
1426:39
1424:.
1401:.
1391:.
1381:56
1379:.
1375:.
1350:97
1348:.
1336:^
1320:12
1318:.
1293:13
1291:.
1268:.
1233:90
1231:.
1207:,
1185:^
1167:.
1139:.
1116:.
1106:52
1104:.
1092:^
930:U
805:.
620:Pa
512:Al
401:Pa
388:.
297:A
67:.
60:.
1683:e
1676:t
1669:v
1655:.
1651::
1626:.
1604::
1577:.
1565::
1557::
1534:.
1530::
1507:.
1503::
1497:9
1477:.
1471::
1444:.
1432::
1409:.
1387::
1360:.
1356::
1330:.
1326::
1303:.
1299::
1276:.
1243:.
1239::
1203::
1179:.
1175::
1169:3
1151:.
1147::
1124:.
1112::
1076:2
1074:)
1072:8
1070:H
1068:8
1059:2
1057:)
1055:8
1053:H
1051:8
1042:2
1040:)
1038:8
1036:H
1034:8
991:4
920:3
907:3
883:3
840:2
825:4
794:2
761:2
756:)
750:(
738:)
732:(
723:2
719:K
715:+
707:3
688:2
677:6
673:2
664::
647:4
644:+
636:2
631:)
625:(
613:)
607:(
598:2
594:K
589:2
586:+
578:4
543:3
535:+
527:4
518:3
509:+
501:5
492:3
462:5
451:C
434:2
426:+
418:5
414:O
405:2
347:4
340:2
323:8
321:H
319:8
315:2
249:3
247:]
245:2
243:)
241:3
233:2
231:)
229:3
220:3
215:(
190:]
188:6
184:2
173:3
171:]
169:2
167:)
165:3
140:4
122:3
120:]
118:2
116:)
114:3
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
