Plumbocene

Plumbocene

Names
IUPAC name Plumbocene
Other names Lead(II) bis(pentamethylcyclopentadienide)
Identifiers
CAS Number	1294-74-2  Y
3D model (JSmol)	Interactive image
PubChem CID	15344874
InChI InChI=1S/2C5H5.Pb/c2*1-2-4-5-3-1;/h2*1-5H; Key: YBXJFWRGENDPSO-UHFFFAOYSA-N
SMILES C1=CC(C=C1)[Pb]C2C=CC=C2
Properties
Chemical formula	Pb(C5H5)2
Molar mass	337.4 g·mol−1
Boiling point	150 °C (302 °F; 423 K) at 10−7 mmHg [1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y  verify  (what is  YN ?) Infobox references

Plumbocene is an organometallic compound of lead with the chemical formula Pb(C ₅ H ₅)₂. 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. ^[1]

Gaseous plumbocene is a bent metallocene with angle 135°, similar to stannocene. But crystalline plumbocene can instead adopt a chain structure, similar to manganocene. ^[2]

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 ^[1] or lead(II) iodide. ^[3]

The decamethyl analog, PbCp* ₂ (decamethylplumbocene), and the half-sandwich complexes, Cp*Pb[BF₄] (lead(II) pentamethylcyclopentadienide tetrafluoroborate) and Cp*PbCl (lead(II) chloride pentamethylcyclopentadienide), are known as well. ^[4]

References

1. Fischer, E. O.; Grubert, H. (1956). "Über Aromatenkomplexe von Metallen. IV. Di-cyclopentadienyl-blei". Zeitschrift für anorganische und allgemeine Chemie . 286 (5–6): 237. doi:10.1002/zaac.19562860507.
2. Greenwood, Norman N.; Earnshaw, Alan (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 464. ISBN   978-0-08-022057-4.
3. Izod, Keith; McFarlane, William; Wills, Corinne; Clegg, William; Harrington, Ross W. (2008). "Agostic-Type...Pb Interactions Stabilize a Dialkylplumbylene. Structure of and Bonding in [{nPr₂P(BH₃)}(Me₃Si)C(CH₂)]₂Pb". Organometallics . 27: 4386. doi:10.1021/om800598b.
4. Jutzi, Peter; Dickbreder, Reiner; Nöth, Heinrich (1989). "Blei(II)-Verbindungen mit π-gebundenen Pentamethylcyclopentadienylliganden – Synthesen, Strukturen und Bindungsverhältnisse". Chemische Berichte. 122 (5): 865. doi:10.1002/cber.19891220512.