✦ LIBER ✦

Microwave Spectrum and Molecular Conformation of (E)-Benzaldehyde Oxime

✍ Scribed by Nobuhiko Kuze; Manabu Sato; Keiichi Maue; Tsuyoshi Usami; Takeshi Sakaizumi; Osamu Ohashi; Kinya Iijima

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 222 KB
Volume: 196
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.1999.7882

No coin nor oath required. For personal study only.

✦ Synopsis

The microwave spectrum of (E)-benzaldehyde oxime, C 6 H 5 -CH|NOH and C 6 H 5 -CH|NOD, has been observed in the frequency range from 26.5 to 40.0 GHz. The spectrum of the ground vibrational state was assigned and fitted to the Watson's A-reduced Hamiltonian to obtain these rotational and centrifugal distortion constants: A ϭ 5183.13(29) MHz, B ϭ 895.367(3) MHz, C ϭ 763.819(3) MHz, ⌬ J ϭ 0.019(3) kHz, and ⌬ JK ϭ 0.204(7) kHz for the normal species, and A ϭ 5158.4(23) MHz, B ϭ 869.44(2) MHz, C ϭ 744.34(2) MHz, ⌬ J ϭ 0.023(2) kHz, and ⌬ JK ϭ 0.193(7) kHz for the deuterated species. The values of the ⌬I (ϭI c Ϫ I a Ϫ I b ) obtained for the normal and deuterated species were Ϫ0.295(6) and Ϫ0.28(5) a.m.u. Å 2 , respectively. The molecular conformation of this molecule was a planar one in which the values of the dihedral angles, CCNO and CNOH, were almost 180°and 180°, respectively.

📜 SIMILAR VOLUMES

Microwave Spectrum and Molecular Conform

Microwave Spectrum and Molecular Conformation of δ-Valerolactam

✍ Nobuhiko Kuze; Hitoshi Funahashi; Mamoru Ogawa; Hiroko Tajiri; Yasuhiro Ohta; Ts 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 175 KB

Microwave rotational spectra for normal and N-deuterated species of delta-valerolactam (2-piperidinone) were observed in the frequency range from 8 to 40 GHz. The spectra of the ground vibrational states for two isotopic species and the excited vibrational states for normal species were assigned, an

Microwave Spectrum and Molecular Structu

Microwave Spectrum and Molecular Structure of (Z)-Chloroacetaldehyde Oxime

✍ Takeshi Sakaizumi; Soutarou Takeda; Osamu Ohashi; Kinya Iijima 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 459 KB

The microwave spectra of (Z )- 35 ClCH 2 CH|NOH, (Z )-37 ClCH 2 CH|NOH, (Z )- 35 ClCH 2 CH|NOD, and (Z )-37 ClCH 2 CH|NOD have been observed in the frequency range from 16.5 to 40.0 GHz. The rotational and centrifugal distortion constants of four isotopic species and the nuclear quadrupole coupling

Microwave Spectrum, Dipole Moment, and C

Microwave Spectrum, Dipole Moment, and Conformation of Methyl Vinyl Sulfone

✍ A.C. Fantoni; G. Corbelli 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 366 KB

The microwave spectrum of methyl vinyl sulfone, \(\mathrm{CH}_{2} \mathrm{CHSO}_{2} \mathrm{CH}_{3}\), has been investigated in the frequency region 26.5 to \(40 \mathrm{GHz}\). The assigned transitions are consistent with a conformation in which one of the \(\mathrm{S}=\mathrm{O}\) bonds nearly ecl

Microwave Spectrum and Molecular Structu

Microwave Spectrum and Molecular Structure of Methyl Cyanate

✍ T. Sakaizumi; K. Sekishita; K. Furuya; Y. Tetsuda; K. Kaneko; O. Ohashi; I. Yama 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 362 KB

In order to determine the complete \(r_{s}\) structure of methyl cyanate, the microwave spectra of \({ }^{13} \mathrm{CH}_{3} \mathrm{OCN}, \mathrm{CH}_{3}{ }^{18} \mathrm{OCN}, \mathrm{CH}_{3} \mathrm{O}^{13} \mathrm{CN}\), sym- \(\mathrm{CH}_{2} \mathrm{DOCN}\), and asym- \(\mathrm{CH}_{2} \mathrm

Structural and conformational analysis o

Structural and conformational analysis of (E)-erythromycin A oxime

✍ John M. McGill; Ross Johnson 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 467 KB

## Abstract A complete and unambiguous assignment of the ^1^H and ^13^C NMR spectra of (__E__)‐erythromycin A oxime in acetone‐__d__~6~ was accomplished by two‐dimensional chemical shift correlation methods. The ^1^H NMR NOE data, in conjunction with molecular modeling techniques, were used to pred

Microwave Spectrum of trans-Nitrosoethyl

Microwave Spectrum of trans-Nitrosoethylene-15N and Pyrolysis Mechanism of Chloroacetaldehyde Oxime

✍ T. Sakaizumi; M. Nishikawa; O. Ohashi 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 307 KB

The microwave spectrum of trans-nitrosoethylene- \({ }^{15} \mathrm{~N}\) ( nitrosoethene) generated by pyrolysis of chloroacetaldehyde oxime- \({ }^{15} \mathrm{~N}\) has been observed in the frequency range from 8.0 to 40.0 GHz. The rotational constants of the \({ }^{15} \mathrm{~N}\) species are