{{Chembox | Watchedfields = changed | verifiedrevid = 444766390 | ImageFile = Plumbocene.svg | ImageSize = 80px | ImageAlt = | IUPACName = Plumbocene | PIN = | OtherNames = Lead(II) bis(pentamethylcyclopentadienide) |Section1={{Chembox Identifiers | CASNo_Ref = {{cascite|correct|??}} | CASNo = 1294-74-2 | PubChem = 15344874 | StdInChI=1S/2C5H5.Pb/c2*1-2-4-5-3-1;/h2*1-5H; | StdInChIKey = YBXJFWRGENDPSO-UHFFFAOYSA-N | SMILES = C1=CC(C=C1)[Pb]C2C=CC=C2 }} |Section2={{Chembox Properties | Formula = {{chem2|Pb(C5H5)2}} | C=10 | H=10 | Pb=1 | Appearance = | Density = | MeltingPt = | BoilingPtC = 150 | BoilingPt_notes = at 10<sup>&minus;7</sup> mmHg<ref name = fischer/> | Solubility = }} |Section3={{Chembox Hazards | MainHazards = | FlashPt = | AutoignitionPt = }} }}

'''Plumbocene''' is an organometallic compound of lead with the chemical formula {{chem2|Pb(C5H5)2|auto=1}}. It is a member of the class of metallocenes. It is soluble in benzene, acetone, ether, and petroleum ether, and insoluble in water. Plumbocene is stable in cold water.<ref name = fischer/>

Gaseous plumbocene is a bent metallocene with angle 135°, similar to stannocene. But crystalline plumbocene can instead adopt a chain structure, similar to manganocene.<ref>{{Greenwood&Earnshaw1st|p=464}}</ref>

Plumbocene is not commercially available. It may be synthesized by the reaction of sodium cyclopentadienide with a lead(II) source such as lead(II) nitrate<ref name = fischer>{{cite journal | last1 = Fischer | first1 = E. O. | authorlink = Ernst Otto Fischer | last2 = Grubert | first2 = H. | title = Über Aromatenkomplexe von Metallen. IV. Di-cyclopentadienyl-blei | journal = Zeitschrift für anorganische und allgemeine Chemie | volume = 286 | pages = 237 | year = 1956 | doi = 10.1002/zaac.19562860507 | issue = 5–6}}</ref> or lead(II) iodide.<ref>{{cite journal | last1 = Izod | first1 = Keith | last2 = McFarlane | first2 = William | last3 = Wills | first3 = Corinne | last4 = Clegg | first4 = William | last5 = Harrington | first5 = Ross W. | title = Agostic-Type...Pb Interactions Stabilize a Dialkylplumbylene. Structure of and Bonding in [{nPr<sub>2</sub>P(BH<sub>3</sub>)}(Me<sub>3</sub>Si)C(CH<sub>2</sub>)]<sub>2</sub>Pb | journal = Organometallics | volume = 27 | pages = 4386 | year = 2008 | doi = 10.1021/om800598b}}</ref>

The decamethyl analog, {{chem2|PbCp\*2}} (decamethylplumbocene), and the half-sandwich complexes, {{chem2|Cp\*Pb[BF4]}} (lead(II) pentamethylcyclopentadienide tetrafluoroborate) and Cp*PbCl (lead(II) chloride pentamethylcyclopentadienide), are known as well.<ref>{{cite journal | last1 = Jutzi | first1 = Peter | last2 = Dickbreder | first2 = Reiner | last3 = Nöth | first3 = Heinrich | title = Blei(II)-Verbindungen mit π-gebundenen Pentamethylcyclopentadienylliganden – Synthesen, Strukturen und Bindungsverhältnisse | journal = Chemische Berichte | volume = 122 | pages = 865 | year = 1989 | doi = 10.1002/cber.19891220512 | issue = 5}}</ref>

==References== {{reflist}}

{{Lead compounds}} {{Cyclopentadienide complexes}} Category:Metallocenes Category:Lead(II) compounds Category:Cyclopentadienyl complexes