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Article: Thermal degradation of transition metal carbonyl complexes. part iii. thermogravimetric and differential scanning calorimetric studies of triphenylphosphine pentacarbonyls of chromium, molybdenum and tungsten
Title | Thermal degradation of transition metal carbonyl complexes. part iii. thermogravimetric and differential scanning calorimetric studies of triphenylphosphine pentacarbonyls of chromium, molybdenum and tungsten |
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Authors | |
Issue Date | 1988 |
Citation | Thermochimica Acta, 1988, v. 128, n. C, p. 175-184 How to Cite? |
Abstract | Thermogravimetric and differential scanning calorimetric studies on M(CO)5(PPh3) (M = Cr,Mo,W) revealed a sequential decomposition process which commenced at ca. 150°C. The Cr complex breaks down with a concurrent liberation of one PPh3 and two CO ligands. The Mo complex, however, eliminates two CO ligands stepwise, followed by the cleavage of the Mo-PPh3 bond. Expulsion of the PPh3 ligand in the W complex is facile, and occurs prior to the simultaneous elimination of the five CO ligands. Complete elimination of the ligands occurs readily in the latter complex below ca. 350 °C, which is consistent with a recent microcalorimetric study in the literature. The degradation pattern is dependent on the electronic and steric factors of the metal and ligands. © 1988. |
Persistent Identifier | http://hdl.handle.net/10722/237558 |
ISSN | 2023 Impact Factor: 3.1 2023 SCImago Journal Rankings: 0.572 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Andy Hor, T. S. | - |
dc.contributor.author | Chan, Hardy S O | - |
dc.contributor.author | Chiam, Caroline S M | - |
dc.contributor.author | Lim, Kok Hwa | - |
dc.date.accessioned | 2017-01-16T06:09:45Z | - |
dc.date.available | 2017-01-16T06:09:45Z | - |
dc.date.issued | 1988 | - |
dc.identifier.citation | Thermochimica Acta, 1988, v. 128, n. C, p. 175-184 | - |
dc.identifier.issn | 0040-6031 | - |
dc.identifier.uri | http://hdl.handle.net/10722/237558 | - |
dc.description.abstract | Thermogravimetric and differential scanning calorimetric studies on M(CO)5(PPh3) (M = Cr,Mo,W) revealed a sequential decomposition process which commenced at ca. 150°C. The Cr complex breaks down with a concurrent liberation of one PPh3 and two CO ligands. The Mo complex, however, eliminates two CO ligands stepwise, followed by the cleavage of the Mo-PPh3 bond. Expulsion of the PPh3 ligand in the W complex is facile, and occurs prior to the simultaneous elimination of the five CO ligands. Complete elimination of the ligands occurs readily in the latter complex below ca. 350 °C, which is consistent with a recent microcalorimetric study in the literature. The degradation pattern is dependent on the electronic and steric factors of the metal and ligands. © 1988. | - |
dc.language | eng | - |
dc.relation.ispartof | Thermochimica Acta | - |
dc.title | Thermal degradation of transition metal carbonyl complexes. part iii. thermogravimetric and differential scanning calorimetric studies of triphenylphosphine pentacarbonyls of chromium, molybdenum and tungsten | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/0040-6031(88)85363-2 | - |
dc.identifier.scopus | eid_2-s2.0-0039896196 | - |
dc.identifier.volume | 128 | - |
dc.identifier.issue | C | - |
dc.identifier.spage | 175 | - |
dc.identifier.epage | 184 | - |
dc.identifier.isi | WOS:A1988N440300019 | - |
dc.identifier.issnl | 0040-6031 | - |