Oxidation of small boron agglomerates: formation of and chemiluminescent emission from BBO

A source configuration that lies intermediate to a low-pressure effusing molecular beam and a high-pressure flow device is used to generate boron cluster molecules in a highly oxidizing environment. Using this source operating in an NO/sub 2/ oxidative environment, the authors generate a chemilumine...

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Veröffentlicht in:	J. Phys. Chem.; (United States) 1988-12, Vol.92 (24), p.6919-6923
Hauptverfasser:	DEVORE, T. C, WOODWARD, J. R, GOLE, J. L
Format:	Artikel
Sprache:	eng
Schlagworte:	090310 - Inorganic Hydrogen Compound Fuels- Properties- (1976-1989) 10 SYNTHETIC FUELS 400201 - Chemical & Physicochemical Properties AGGLOMERATION BORON BORON COMPOUNDS BORON OXIDES CHALCOGENIDES CHEMICAL REACTIONS CHEMILUMINESCENCE Chemistry DATA ELEMENTS EMISSION SPECTROSCOPY ENERGY LEVELS Exact sciences and technology EXCITED STATES EXPERIMENTAL DATA General and physical chemistry INFORMATION INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY LUMINESCENCE NITROGEN COMPOUNDS NITROGEN DIOXIDE NITROGEN OXIDES NITROUS OXIDE NORMAL-MODE ANALYSIS NUMERICAL DATA OXIDATION OXIDES OXYGEN COMPOUNDS Photochemistry Physical chemistry of induced reactions (with radiations, particles and ultrasonics) REACTION INTERMEDIATES SEMIMETALS SPECTROSCOPY VIBRATIONAL STATES
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Beschreibung
Zusammenfassung:	A source configuration that lies intermediate to a low-pressure effusing molecular beam and a high-pressure flow device is used to generate boron cluster molecules in a highly oxidizing environment. Using this source operating in an NO/sub 2/ oxidative environment, the authors generate a chemiluminescent emission spectrum, which they attribute to the asymmetric BBO molecule. The observed spectrum is characterized by a strong ..delta nu.. = ..delta nu.. = 40 cm/sup /minus/1/ sequence grouping and a weaker ..delta nu.. = + 1 sequence (..delta nu.. = 40 cm/sup /minus/1/), 440 cm/sup /minus/1/ to higher energy. A second sequence with ..delta nu.. /approximately/ 142 cm/sup /minus/1/ is also observed. Combining the 440-cm/sup /minus/1/ upper-state frequency with the 142-cm/sup /minus/1/ sequence structure implies a lower-state frequency of /approximately/ 582 cm/sup /minus/1/ for the B-B stretch, consistent with ab initio calculation.
ISSN:	0022-3654 1541-5740
DOI:	10.1021/j100335a016