The a3Σ+ (a11)→X1Σ+ (X0+) Transitions of BiP, BiAs, and BiSb

Spectroscopy of Jet-Cooled Bi3

“…These molecules all have X 1 Σ g + ground states with a formal triple bond, and the ground and excited states are spectroscopically very well characterized. 1 Most of the mixed group 15 diatomics are spectroscopically known as well with well-established X 1 Σ + ground states and with vibrational frequencies and bond lengths accurately known for PN, [2][3][4] AsN, 5,6 SbN, [7][8][9] BiN, 10,11 AsP, 12,13 SbP, 7,14 BiP, 10,15,16 and BiAs. 15,16 Only for SbAs and BiSb are measurements of the ground-state bond length currently unavailable.…”

“…These molecules all have X 1 Σ g + ground states with a formal triple bond, and the ground and excited states are spectroscopically very well characterized . Most of the mixed group 15 diatomics are spectroscopically known as well with well-established X 1 Σ + ground states and with vibrational frequencies and bond lengths accurately known for PN, − AsN, , SbN, − BiN, , AsP, , SbP, , BiP, ,, and BiAs. , Only for SbAs and BiSb are measurements of the ground-state bond length currently unavailable.…”

Coordination of Arsine Ligands as a General Synthetic Approach to Rare Examples of Arsenic−Antimony and Arsenic−Bismuth Bonds

“…In spite of the similar electronegativities of the heavy pnictogen elements (As 2.18; Sb 2.05; Bi 2.02), examples of compounds containing As−Sb or As−Bi bonds are very rare. The limited data available for such compounds include Mössbauer and 1 H NMR spectroscopy for derivatives of R 2 Pn−Pn′R′ 2 , vibrational spectroscopy , and mass spectrometry for Pn−Pn′ diatomics and cyclo-pnictines, XPS for binary arsenides, melting points for a range of R 3 Pn-Pn′R′ 3 adducts, and crystallographic data for two compounds containing an As−Sb bond , and for one compound containing an As−Bi bond . We have now exploited the coordination chemistry of arsine ligands as a general approach to As−Pn bond formation using antimony or bismuth acceptor centers and report the preparation and the characterization of the first crystallographically characterized arsine−stibine adduct 1 , the first stibinoarsonium cations 2 , and the first bismuthidodiarsonium cation 3 .…”

6 Infrared emission spectroscopy

“…63 Another interesting example from the Fink group is the infrared electronic transitions of BiP, BiAs and BiSb. 64 These diatomics are isovalent with N 2 and have X 1 S ground states. Unlike N 2 , however, the 3 S and 5 S states that also arise from the lowest energy 4 S 4 S atomic asymptote are low-lying.…”