“…Some spectroscopic and molecular properties [10,11] were also collected by Huber and Herzberg [8] in 1979. Up to now, a number of experiments [12][13][14][15][16][17][18][19] have been carried out, and some spectroscopic and molecular properties have been extracted from these experimental investigations. Summarizing the experiments, we find the derived properties of BO mainly focus on the spectroscopic parameters (D e , R e , x e , x e x e , a e , B e and D 0 ), and little information is available in the literature about highly-excited vibrational levels.…”