Metalloles are metallacycle derivatives of cyclopentadiene in which the carbon atom at position 5, the saturated carbon, is replaced by a heteroatom.1 In contrast to its parent compound, the numbering of the metallole starts at the heteroatom. Some of these compounds are described as organometallic compounds, but in the list below quite a number of metalloids are present too. Some metalloles are fluorescent.2 Polymeric derivatives of pyrrole and thiophene are of interest in molecular electronics. Metalloles, which can also be viewed as structural analogs of pyrrole, include:
| Name | M | d(M-C), Å | d(M-H), Å | α(C-M-C), ° | E, kJ/mol |
|---|---|---|---|---|---|
| Pyrrole | N | 1.37 | 1.01 | 110 | 0 |
| Phosphole | P | 1.81 | 1.425 | 90.5 | 67 |
| Arsole | As | 1.94 | 1.53 | 86 | 125 |
| Stibole | Sb | 2.14 | 1.725 | 80.5 | 160 |
| Bismole | Bi | 2.24 | 1.82 | 78 | 220 |
- Arsole, a moderately-aromatic arsenic analog
- Bismole, a bismuth analog
- Borole, a boron analog
- Furan (oxole), an oxygen analog
- Gallole, a gallium analog
- Germole, a germanium analog
- Phosphole, a phosphorus analog
- Pyrrole (azole), a nitrogen analog
- Selenophene, a selenium analog
- Silole, a silicon analog
- Stannole, a tin analog
- Stibole, an antimony analog
- Tellurophene, a tellurium analog
- Plumbole,45 a lead analog
- Thiophene, a sulfur analog
- Titanacyclopentadiene, e.g. (C5H5)2TiC4Ph46
- Zirconacyclopentadiene, e.g. (C5H5)2ZrC4Ph47
- Ferrole, an iron analog
References
References
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