Difference between revisions of "Cyclopentadienylthallium"
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| − | '''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.<ref name="G&E"/> | + | '''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.<ref name="G&E"/><ref>{{citation | first1 = A. J. | last1 = Nielson | first2 = C. E. F. | last2 = Rickard | first3 = J. M. | last3 = Smith | year = 1986 | title = Cyclopentadienylthallium (Thallium Cyclopentadienide) | journal = Inorg. Synth. | volume = 24 | pages = 97–99 | doi = 10.1002/9780470132555.ch31}}.</ref> |
The bonding mode of the cyclopentadienyl ligand is η<sup>5</sup>. In the gas phase, the compound is monomeric, with the thallium atom sitting 241 pm above the plane of the cyclopentadienyl ring,<ref name="G&E"/> while the crystal structure has zigzag chains of equidistant thallium cations and cyclopentadienide anions.<ref name="G&E"/> | The bonding mode of the cyclopentadienyl ligand is η<sup>5</sup>. In the gas phase, the compound is monomeric, with the thallium atom sitting 241 pm above the plane of the cyclopentadienyl ring,<ref name="G&E"/> while the crystal structure has zigzag chains of equidistant thallium cations and cyclopentadienide anions.<ref name="G&E"/> | ||
Revision as of 15:45, 18 December 2010
| Cyclopentadienylthallium | |
|---|---|
| |
| 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 | [] |
| EC number | |
| ChemSpider | |
| Properties[1] | |
| Chemical formula | C5H5Tl |
| Molar mass | 269.48 g mol−1 |
| Appearance | yellow solid |
| Solubility in water | insoluble |
| Hazards[2] | |
| EU index number | 081-002-00-9 |
| GHS pictograms |   
|
| GHS signal word | DANGER |
| GHS hazard statements | H300, H330, H373, H411 |
| Related compounds | |
| Other compounds | Cyclopentadienylindium |
| 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][3]
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
- ↑ 1.0 1.1 1.2 1.3 Greenwood, Norman N.; Earnshaw, A. Chemistry of the Elements; Pergamon: Oxford, 1984; p 294. ISBN 0-08-022057-6.
- ↑ Index no. 081-002-00-9 of Annex VI, Part 3, to Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006. OJEU L353, 31.12.2008, pp 1–1355 at p 443.
- ↑ Nielson, A. J.; Rickard, C. E. F.; Smith, J. M. Cyclopentadienylthallium (Thallium Cyclopentadienide). Inorg. Synth. 1986, 24, 97–99. DOI: 10.1002/9780470132555.ch31.
