Microwave spectrum, molecular structure, and ab initio calculation of (E)-chloroacetaldehyde oxime
作者:Takeshi Sakaizumi、Ikuko Sasane、Tsuyoshi Kouno、Soutarou Takeda、Nobuhiko Kuze、Osamu Ohashi、Kinya Iijima
DOI:10.1016/s0022-2860(97)00156-7
日期:1997.9
uA2, respectively. The molecular structure of this molecule was determined to be the anticlinal form ( ф 1 :∠ ClCCN = 121.4° , ф 2 :∠ CNOH = 180.0° ), as shown in Fig. 1(a). It was found that ab initio calculation of MP 2 6-31 G ∗∗ level can be used to predict the most stable rotational conformer of (E)-ClCH2CHNOH. The seven structural parameters of the heavy atom skeleton of this molecule were fitted
摘要 在26.4~40.5 GHz的频率范围内观测到了(E)-35ClCH2CHNOH、(E)-37ClCH2CHNOH、(E)-35ClCH2CHNOD和(E)-37ClCH2CHNOD的微波光谱。确定了四种同位素物质在基态和激发振动状态下的旋转和离心畸变常数。发现在地面振动状态下为正常(35Cl 和 37Cl)和氘代(35Cl 和 37Cl)物种获得的 ΔI( = Ic - Ia - Ib) 值为 - 16.350(4), - 16.36(4) , − 17.06(4), 和 − 17.07(6) uA2。该分子的分子结构被确定为背斜形式( ф 1 :∠ ClCCN = 121.4° , ф 2 :∠ CNOH = 180.0° ),如图1(a)所示。结果表明,从头计算 MP 2 6-31 G ∗∗ 水平可用于预测 (E)-ClCH2CHNOH 最稳定的旋转构象异构体。该分子