Cationic η5-cyclopentadienylpalladium(II ) complexes. Compounds of type [Pd(η5-C5H5)L2]PF6containing tertiary phosphines, arsines, and stibines. Crystal and molecular structure of [Pd(η5-C5H5)(SbPh3)2]PF6·CH2Cl2
| Autor: | Allan H. White, Stanley Bruce Wild, Nicholas K. Roberts, Brian W. Skelton |
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| Rok vydání: | 1982 |
| Předmět: | |
| Zdroj: | J. Chem. Soc., Dalton Trans.. :2093-2097 |
| ISSN: | 1364-5447 0300-9246 |
| DOI: | 10.1039/dt9820002093 |
| Popis: | The complexes [Pd(η5-C5H5)L2]PF6[where L = PMe2Ph, PPh3, AsMe2Ph, AsPh3, or SbPh3 and L2=(SS)-, (RR,SS)-, (RS)-C6H4(PMePh)2-o or (SS)-, (RR,SS)-, (RS)-C6H4(AsMePh)2-o] have been prepared in high yield from the appropriate complexes [PdCl2L2] and cyclopentadiene in Me2CO in the presence of AgPFe6, or with AgNO3 followed by metathesis with NH4PF6. The brightly coloured compounds conduct as uni-univalent electrolytes in Me2CO and CH2Cl2 and have spectroscopic properties consistent with η5 co-ordination of the cyclopentadienyl moiety in solution. The molecular structure of [Pd(η5-C5H5)(SbPh3)2]PF6·CH2Cl2 has been determined by a single-crystal X-ray analysis. The crystals are monoclinic, space group P21/c with a= 12.506(6), b= 19.002(7), c= 18.575(5)A, β= 106.53(3)°, and Z= 4. The structure was solved by heavy-atom methods at 295(1) K and refined by least-squares methods to R= 0.051 for 4 384 observed reflections. The arrangement of the two antimony atoms and the centre of the cyclopentadienyl ring about the palladium atom is approximately trigonal. The co-ordinated cyclopentadienyl moiety shows no significant deviations from planarity. |
| Databáze: | OpenAIRE |
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