Cyclopentadienyl allyl palladium
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| Names | |
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| Other names
(Cp)Pd(allyl)
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| Identifiers | |
1271-03-0  |
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| Properties | |
| C8H10Pd | |
| Molar mass | 212.59 g·mol−1 |
| Appearance | Reddish needle-shaped solid |
| Melting point | 60 to 62 °C (140 to 144 °F; 333 to 335 K) |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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| Infobox references | |
Cyclopentadienyl allyl palladium is an organopalladium compound with formula (C5H5)Pd(C3H5). This reddish solid is volatile with an unpleasant odor. It is soluble in common organic solvents. The molecule consists of a Pd centre sandwiched between a Cp and allyl ligands.[1]
Preparation
This complex is produced by the reaction of allylpalladium chloride dimer with sodium cyclopentadienide:[1][2]
- 2 C5H5Na + (C3H5)2Pd2Cl2 → 2 (C5H4)Pd(C3H5) + 2 NaCl
Structure and reactions
The 18-electron complex adopts a half-sandwich structure with Cs symmetry, i.e., the molecule has a plane of symmetry. The complex can be decomposed readily by reductive elimination.
- C3H5PdC3H5 → Pd(0) + C5H5C3H5
The compound readily reacts with alkyl isocyanides to produce clusters with the approximate formula [Pd(CNR)2]n. It reacts with bulky alkyl phosphines to produce two-coordinated palladium(0) complexes:[3]
- CpPd(allyl) + 2 PR3 → Pd(PR3)2 + C5H5C3H5
The compound has been used to deposit thin film chemical vapor deposition of metallic palladium.[4][5]
References
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