Stannocene

Stannocene is an organometallic compound with the formula Sn(C₅H₅)₂. It appears yellow-brown, and melts around 105 °C.^[4]

Stannocene

Names
IUPAC name Stannocene Bis(η5-cyclopentadienyl)tin(II)
Other names Bis(cyclopentadienyl)tin Di(cyclopentadienyl)tin
Identifiers
CAS Number	1294-75-3[1]
3D model (JSmol)	Interactive image
PubChem CID	12476310
InChI InChI=1S/2C5H5.Sn/c2*1-2-4-5-3-1;/h2*1-5H;/q2*-1;+2 Key: CRQFNSCGLAXRLM-UHFFFAOYSA-N
SMILES [cH-]1cccc1.[cH-]1cccc1.[Sn+2]
Properties
Chemical formula	C10H10Sn
Molar mass	248.900 g·mol−1
Melting point	105 °C (221 °F; 378 K)[2]
Structure[3]
Crystal structure	orthorhombic
Space group	Pbcm, No. 57
Lattice constant	a = 5.835 Å, b = 25.385 Å, c = 12.785 Å
Formula units (Z)	8 formula per cell
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chemically, stannocene is a metallocene that can be produced efficiently from cyclopentadienyl sodium and tin(II) chloride.^[5] Unlike in ferrocene the two cyclopentadienyl rings are not parallel.^[6]