Dipartimento di Chimica G. Ciamician dell'Università di Bologna, Via Selmi 2, I-40126 Bologna, Italy.
J Phys Chem A. 2009 Dec 31;113(52):14227-30. doi: 10.1021/jp902034k.
We investigated the rotational spectra of six isotopologues of pyridine--Ne(2), formed by combinations of two isotopes of the nitrogen atom ((14)N and (15)N) in pyridine with two isotopes of the rare gas atoms ((20)Ne and (22)Ne), by using pulsed jet Fourier transform microwave spectroscopy. We detected the C(2v) symmetry conformer, denoted as [1,1], where the Ne atoms are located one on each side of the ring plane. The [2,0] species, with the two Ne atoms on the same side of the ring, was not observed. Two structural parameters, R and theta, that localize the rare gas atoms with respect to pyridine have been determined. The (14)N nuclear quadrupole coupling constants have been obtained for the isotopologues containing this nucleus.
我们使用脉冲喷射傅里叶变换微波光谱法研究了由吡啶中的两个氮原子同位素((14)N 和 (15)N)与两种稀有气体原子同位素((20)Ne 和 (22)Ne)组合而成的六种吡啶同位素-Ne(2)的转动光谱。我们检测到了 C(2v)对称构象，记为[1,1]，其中 Ne 原子位于环平面的每一侧。没有观察到两个 Ne 原子位于环的同一侧的[2,0]物种。已经确定了两个结构参数 R 和 theta，它们用于确定稀有气体原子相对于吡啶的位置。对于包含该原子核的同位素，已经获得了(14)N 核四极耦合常数。
