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Organometallic route to dimolybdenum carbide via a low-temperature pyrolysis of a dimolybdenum alkyne complex

par Giraudon, Jean Marc;Leclercq, Lucien;Leclercq, Ginette;Lofberg, Axel ;Frennet, Alfred
Référence Journal of Materials Science, 28, 9, page (2449-2454)
Publication Publié, 1993-05

Article révisé par les pairs

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Résumé :

Pyrolytic transformation of the complex Cp2Mo2(CO)4(dmad) (Cp=cyclopentadienyl, dmad=dimethylacetylenedicarboxylate) under hydrogen at 550 °C gives, after a passivation step, Mo2C with an excess of carbon and oxygen. These impurities can be withdrawn with an appropriate reductive post-treatment. Based on thermogravimetric analyses and pyrolysis mass spectroscopy performed on the precursor, a preliminary decomposition scheme has been proposed. © 1993 Chapman & Hall.