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https://scholarbank.nus.edu.sg/handle/10635/95206
DC Field | Value | |
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dc.title | Tetranuclear complexes from the reaction of tetraphosphorus triselenide with cyclopentadienylchromium tricarbonyl dimer. Synthesis, thermal degradation, and X-ray crystal structures of Cp4Cr4(CO)9(P4Se 3)·1/2C6H6 and Cp4Cr4(CO)8(P2Se2) | |
dc.contributor.author | Goh, L.Y. | |
dc.contributor.author | Chen, W. | |
dc.contributor.author | Wong, R.C.S. | |
dc.date.accessioned | 2014-10-16T08:45:04Z | |
dc.date.available | 2014-10-16T08:45:04Z | |
dc.date.issued | 1999-02-01 | |
dc.identifier.citation | Goh, L.Y.,Chen, W.,Wong, R.C.S. (1999-02-01). Tetranuclear complexes from the reaction of tetraphosphorus triselenide with cyclopentadienylchromium tricarbonyl dimer. Synthesis, thermal degradation, and X-ray crystal structures of Cp4Cr4(CO)9(P4Se 3)·1/2C6H6 and Cp4Cr4(CO)8(P2Se2). Organometallics 18 (3) : 306-314. ScholarBank@NUS Repository. | |
dc.identifier.issn | 02767333 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/95206 | |
dc.description.abstract | The reaction of [CpCr(CO)3]2 with P4Se3 has been investigated. Under mild conditions, Cp4Cr4(CO)9(P4Se3) (4) was the main product (48% yield), alongside low yields of CpCr(CO)3H (5), CpCr(CO)2P3 (6), [CpCr(CO)2]2P2 (7), and Cp4Cr4(CO)8(P2Se2) (8). Product isolation under various reaction conditions, together with 1H NMR spectral monitoring of the reaction and thermolytic studies of the complexes 4 and 8, indicates that 4 and 5 were the primary products of the reaction. Thermolysis of 4 led to 8, which in turn degraded to give 6, 7, and Cp4Cr4Se4 (9). The complexes 4 and 8 were also obtained from the reaction of [CpCr(CO)2]2Se (3) with P4Se3 or P4S3; the reaction with the latter also gave [CpCr(CO)2]2S (10), the sulfur analogue of 3, as an additional product. Mechanistic pathways via the monomeric CpCr(CO)3 species and the Cr2Se complex 3 are proposed. The cothermolysis of [CpCr(CO)2]2 (Cr≡Cr) (2) with P4Se3 led to the isolation of 5, 6, 7, and 9. All the complexes have been characterized spectroscopically, while 4 and 8 have also been studied by X-ray diffraction analysis. The complex 8 possesses an unusual open-book framework with a P-P bond as its backbone and a 2-fold symmetry axis passing through its midpoint. | |
dc.source | Scopus | |
dc.type | Article | |
dc.contributor.department | CHEMISTRY | |
dc.description.sourcetitle | Organometallics | |
dc.description.volume | 18 | |
dc.description.issue | 3 | |
dc.description.page | 306-314 | |
dc.description.coden | ORGND | |
dc.identifier.isiut | NOT_IN_WOS | |
Appears in Collections: | Staff Publications |
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