Abstract
B(N3)3 was isolated in a low-temperature argon matrix and its FTIR spectrum measured. The spectrum was consistent with the known gas-phase spectrum, and splitting due to the natural abundances of 10B and 11B was observed. Upon UV photolysis, new peaks at 2100, 1861, and 1803 cm-1 assigned to the linear molecule NNBN appeared as the B(N3)3 peaks decayed. Geometry optimizations and calculations of the ground-state frequencies for 10B and 11B isotopomers B(N3)3 [MP2/6-31G(d)] and NNBN [CCSD(T)/6-311G*] are reported, and the frequencies are compared to those observed in the IR spectra. The photolytic decomposition mechanism of B(N3)3 is discussed.
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