Rotational spectrum of BiBr

✍ Scribed by P. Kuijpers; A. Dymanus

• Book ID: 103013399
• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 412 KB
• Volume: 39
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(76)80058-9

✦ Synopsis

The microwave absorption spectra of Bi "Br and BialBr have been measured in the 6.5-100 GHz region. Frequencies of rotational transitions (u,J + 1) -(u,J) in the O+ electronic ground state with J = 26,27 and 35-39, and in the vibrational state u = O-l 1 can be fitted to the expression: v = 2[ Yor + YII(u++)+ Yzt(u+~)*] (J+ 1)+4Yuz(J+ 1)3.Theresults for the Dunham coefficients are: Yol = 1295.5609(12) MHz, Yt 1 = -3.97809(16) hlHz, Yzl = 2.303(18) kHz, Yoz = -220.26(45) Hz for Bi79Br, and: YO t = 1272.3406(12) MHz, Y1 t = -3.&7164(16) MHz, Yz, = X225(14) kHz, Yaz = -212.31(45) Hz for Bi8'Br. From these resuIts we have deduced the value for the equilibrium distance r,, for the potential constants 20 and D 1, and for the vibrational constants we and wde. The molecular constants of BiBr are almost the same as of TlBr, the situation found also for Bii and TlI.