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| Watchedfields = | Watchedfields =
| verifiedrevid = | verifiedrevid =
| ImageFileL1 = Neptunocene-from-xtal-3D-balls.png | ImageFile = Neptunocene-from-xtal-3D-balls.png
| ImageSize = 300 | ImageSize = 120
| IUPACName = Bis(η<sup>8</sup>-cyclooctatetraenyl)neptunium(IV) | IUPACName = Bis(η<sup>8</sup>-cyclooctatetraenyl)neptunium(IV)
| OtherNames = Neptunium cyclooctatetraenide<br>Np(COT)<sub>2</sub> | OtherNames = Neptunium cyclooctatetraenide<br>Np(COT)<sub>2</sub>
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|Section2={{Chembox Properties |Section2={{Chembox Properties
| C=16
| Formula = C<sub>16</sub>H<sub>16</sub>Np
| H=16
| MolarMass =
| Np=1
| Appearance = | Appearance =
| Density = | Density =
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|Section3={{Chembox Hazards |Section3={{Chembox Hazards
| MainHazards = ignites in air | MainHazards = Ignites in air
| FlashPt = | FlashPt =
| AutoignitionPt = | AutoignitionPt =
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== Property and synthesis == == Property and synthesis ==
It was synthesized in 1970 by reacting ] with ]. It is ] to ] and ], and they behave chemically identically: all three compounds are insensitive to water or dilute bases but are sensitive to air, reacting quickly to form oxides, and are only slightly soluble in ] and ].<ref name=Yoshida750>Yoshida et al., pp. 750–2</ref> It was synthesized in 1970 by reacting ] with ] (K<sub>2</sub>(C<sub>8</sub>H<sub>8</sub>). It is ] to ] and ], and they behave chemically identically. All three compounds are insensitive to water or dilute bases, but are sensitive to air, reacting quickly to form oxides, and are only slightly soluble in ] and ].<ref name=Yoshida750>{{cite book |last1=Yoshida |first1 = Zenko|first2 = Stephen G.|last2 = Johnson|first3 = Takaumi|last3 = Kimura|first4 = John R.|last4=Krsul|ref=Yoshida et al.|contribution = Neptunium|title = The Chemistry of the Actinide and Transactinide Elements|editor1-first = Lester R.|editor1-last = Morss|editor2-first = Norman M.|editor2-last = Edelstein|editor3-first = Jean|editor3-last = Fuger|edition = 3rd|date = 2006|volume = 3|publisher = Springer|location = Dordrecht, the Netherlands|pages = 699–812|url = http://radchem.nevada.edu/classes/rdch710/files/neptunium.pdf|doi = 10.1007/1-4020-3598-5_6}}</ref>


==References== ==References==
{{reflist}} {{reflist}}

==Bibliography==
*{{cite book |last1=Yoshida |first1 = Zenko|first2 = Stephen G.|last2 = Johnson|first3 = Takaumi|last3 = Kimura|first4 = John R.|last4=Krsul|ref=Yoshida et al.|contribution = Neptunium|title = The Chemistry of the Actinide and Transactinide Elements|editor1-first = Lester R.|editor1-last = Morss|editor2-first = Norman M.|editor2-last = Edelstein|editor3-first = Jean|editor3-last = Fuger|edition = 3rd|date = 2006|volume = 3|publisher = Springer|location = Dordrecht, the Netherlands|pages = 699–812|url = http://radchem.nevada.edu/classes/rdch710/files/neptunium.pdf|doi = 10.1007/1-4020-3598-5_6}}


{{Neptunium compounds}} {{Neptunium compounds}}
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] ]
] ]
]

Revision as of 11:03, 8 February 2018

Neptunocene
Names
IUPAC name Bis(η-cyclooctatetraenyl)neptunium(IV)
Other names Neptunium cyclooctatetraenide
Np(COT)2
Identifiers
3D model (JSmol)
SMILES
  • .11.11
Properties
Chemical formula C16H16Np
Molar mass 445 g·mol
Hazards
Occupational safety and health (OHS/OSH):
Main hazards Ignites in air
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

Neptunocene, Np(C8H8)2, is an organoneptunium compound composed of a neptunium atom sandwiched between two cyclooctatetraenide rings. It was one of the first organoneptunium compounds to be synthesized. Neptunocene, a member of the "actinocenes," a group of metallocenes incorporating elements from the actinide series.

Property and synthesis

It was synthesized in 1970 by reacting neptunium(IV) chloride with dipotassium cyclooctatetraenide (K2(C8H8). It is isomorphous to uranocene and plutonocene, and they behave chemically identically. All three compounds are insensitive to water or dilute bases, but are sensitive to air, reacting quickly to form oxides, and are only slightly soluble in benzene and toluene.

References

  1. Yoshida, Zenko; Johnson, Stephen G.; Kimura, Takaumi; Krsul, John R. (2006). "Neptunium". In Morss, Lester R.; Edelstein, Norman M.; Fuger, Jean (eds.). The Chemistry of the Actinide and Transactinide Elements (PDF). Vol. 3 (3rd ed.). Dordrecht, the Netherlands: Springer. pp. 699–812. doi:10.1007/1-4020-3598-5_6.
Neptunium compounds
Np(III)
Np(IV)
Organoneptunium(IV) compounds
Np(V)
Np(VI)
Np(VII)
Categories: