Cyclopentadienylthallium

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Cyclopentadienylthallium
Cyclopentadienylthallium.svg
IUPAC name Thallium(I) cyclopentadienide
Other names Thallium cyclopentadienide; (η5-Cyclopentadienyl)thallium
Identifiers
InChI InChI=1/C5H5.Tl/c1-2-4-5-3-1;/h1-5H;/q-1;+1
InChIKey CVEQRUADOXXBRI-UHFFFAOYAE
Standard InChI InChI=1S/C5H5.Tl/c1-2-4-5-3-1;/h1-5H;/q-1;+1
Standard InChIKey CVEQRUADOXXBRI-UHFFFAOYSA-N
CAS number [34822-90-7]
EC number 252-229-2
ChemSpider 24721800
Properties
Chemical formula C5H5Tl
Appearance yellow solid
Solubility in water insoluble
Hazards
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Cyclopentadienylthallium is an organothallium compound. It may be prepared by the reaction of aqueous thallium hydroxide solution with cyclopentadiene, from which mixture it precipitates as air-stable yellow crystals.[1]

The bonding mode of the cyclopentadienyl ligand is η5. In the gas phase, the compound is monomeric, with the thallium atom sitting 241 pm above the plane of the cyclopentadienyl ring,[1] while the crystal structure has zigzag chains of equidistant thallium cations and cyclopentadienide anions.[1]

References

  1. 1.0 1.1 1.2 Greenwood, Norman N.; Earnshaw, A. Chemistry of the Elements; Pergamon: Oxford, 1984; p 294. ISBN 0-08-022057-6.