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Synthesis of two novel dinuclear molybdenum(0) complexes of quinoxaline-2,3-dione: New precursors for preparation of a-MoO3 nanoplates
Inorganica Chimica Acta • 2015
Publication Information
Authors
Mostafa Y. Nassar, Attia S. Attia , Khalifa A. Alfallous , M.F. El-Shahat
Keywords
Not Available
Journal
Inorganica Chimica Acta
Publisher
Elsevier
Volume
405
Issue
Not Available
Pages
362–367
publication.type
International
Paper Link
Open Link
Supplementary Materials
Not Available
Abstract
a-MoO3 nanoplates have been prepared through thermal decomposition of two novel organometallic
molybdenum complexes, as new solid precursors, at 500 C for 2 h. The two molybdenum complexes
([(Mo2(bipy)(CO)n(DQ)m]; where, DQ = quinoxaline-2,3-dione; n = 2 or 4, m = 2 or 3) were synthesized
by reaction of Mo(CO)6, and DQ in presence of 2,20-bipyridine in THF solvent at reflux temperature under
atmospheric or reduced pressure. Interestingly, the crystallite size of the produced MoO3 nanoplates
products (80.7 and 114 nm) depended on the organic moiety content of the ignited solid precursor.
The as-prepared products were characterized by means of elemental analysis, Fourier transform infrared
spectroscopy (FT-IR), UV–Vis spectroscopy, thermal analysis (TGA), X-ray powder diffraction (XRD), Field
emission electron microscopy (FESEM) and mass spectroscopy. The produced MoO3 nanoplates showed
semiconducting properties by exhibiting optical band gab energy of 3.0 or 3.25 eV.
molybdenum complexes, as new solid precursors, at 500 C for 2 h. The two molybdenum complexes
([(Mo2(bipy)(CO)n(DQ)m]; where, DQ = quinoxaline-2,3-dione; n = 2 or 4, m = 2 or 3) were synthesized
by reaction of Mo(CO)6, and DQ in presence of 2,20-bipyridine in THF solvent at reflux temperature under
atmospheric or reduced pressure. Interestingly, the crystallite size of the produced MoO3 nanoplates
products (80.7 and 114 nm) depended on the organic moiety content of the ignited solid precursor.
The as-prepared products were characterized by means of elemental analysis, Fourier transform infrared
spectroscopy (FT-IR), UV–Vis spectroscopy, thermal analysis (TGA), X-ray powder diffraction (XRD), Field
emission electron microscopy (FESEM) and mass spectroscopy. The produced MoO3 nanoplates showed
semiconducting properties by exhibiting optical band gab energy of 3.0 or 3.25 eV.