Ultraviolet and Infrared Spectra of Diboron in Solid Neon at 4 K.
Chemphyschem
; 18(1): 124-127, 2017 Jan 04.
Article
em En
| MEDLINE
| ID: mdl-27806185
ABSTRACT
Apart from products H, B, BH, BH2 and BH3 identified from their emission spectra in the UV/Vis region, photolysis of diborane(6) dispersed in solid neon at 4â
K with far-ultraviolet light from a synchrotron led to observation of absorption line (0,0) of the electronic transition A 3 Σu- âX 3 Σg- of B2 at 326.39â
nm. Absorption lines (1,0) of 11 B2 , 11 B10 B and 10 B2 were recorded at 316.63, 316.40 and 316.15â
nm, respectively. ΔG1/2 of state A 3 Σu- for 11 B2 , 11 B10 B and 10 B2 in solid neon are accordingly derived to be 945, 968 and 993â
cm-1 , respectively. Weak lines (0,1) of 11 B2 at 29586â
cm-1 and of 11 B10 B at 29560â
cm-1 , corresponding to 1042±30 and 1068±30â
cm-1 for vibrational modes in the electronic ground state, were recorded in emission. An absorption line recorded at 1066.5±0.5â
cm-1 in infrared spectra after photolysis of either B2 H6 in Ne or B2 D6 with D2 in Ne is thus attributed to 11 B10 B.
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MEDLINE
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En
Ano de publicação:
2017
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Article