The vibrational spectra of AsR3·10BX3(R = CH3 or CD3; X = Cl or Br) and AsR3·nBX3(R = CH3 or CD3; X = Cl, Br, or l; n = natural abundance) are reported. The BAs stretching frequencies are assigned between 640 and 740 cm–1, and the calculated force constants (2.84, 2.26, and 1.70 mdyn A–1) show that the BAs bond strength decreases for the adducts in the sequence Bl3 > BBr3 > BCl3. The order of BAs bond
AsR 3 · 10 BX 3(R = CH 3或CD 3; X = Cl或Br)和AsR 3 · n BX 3(R = CH 3或CD 3 ; X = Cl,Br或l; n =自然丰度)。在640和740 cm –1之间指定了BA的拉伸频率,计算得出的力常数(2.84、2.26和1.70 mdyn A –1)表明,对于加合物,BAs的键合强度降低,顺序为Bl 3 > BBr 3 >
氯化
硼3。BAs键合强度的顺序与通过量热法确定的加合物稳定性的顺序相同。