✦ LIBER ✦

Rotationally resolved magnetic vibrational circular dichroism of methane

✍ Scribed by Baoliang Wang; Ryong K. Yoo; Paul V. Croatto; Timothy A. Keiderling

Publisher: Elsevier Science
Year: 1991
Tongue: English
Weight: 438 KB
Volume: 180
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(91)90330-c

No coin nor oath required. For personal study only.

✦ Synopsis

Magnetic-lield-induced circular dichroism of the vq mode of methane at 0.5 cm-' resolution is reported. For the first five members of the R branch, A, /DO is approximately constant, averaging -4.8 x 1 Om4, which corresponds to an average g, of + 0.44. This agrees in sign with and is z 40% higher than the magnetic resonance results for the ground state of methane. The difference may be due to experimental error or to vibrational magnetic moment contributions. The consistency ofg, implies that the MVCD depends primarily on the change in 1M, in each transition.

📜 SIMILAR VOLUMES

Rotationally Resolved Magnetic Vibration

Rotationally Resolved Magnetic Vibrational Circular Dichroism of Hydrogen Chloride and Deuterium Chloride

✍ C.N. Tam; T.A. Keiderling 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 541 KB

The magnetic vibrational circular dichroism (MVCD) spectra of \(\mathrm{HCl}\) and \(\mathrm{DCl}\) are presented. The average rotational \(g\)-value of \(\mathrm{H}^{35} \mathrm{Cl}\) in the first excited vibrational states was determined to be 0.451 and 0.449 for the \(P\) and \(R\) branches, resp

Magnetic vibrational circular dichroism

Magnetic vibrational circular dichroism of C60

✍ Cheok N. Tam; Baoliang Wang; Timothy A. Keiderling; William G. Golden 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 368 KB

The magnetic vibrational circular dichroism spectra of C6o fullerene in solution are presented for excitation of the 1430 and 1183 cm-l ttu-symmetry fundamental vibrations. These transitions give rise to A-term MVCD of opposite sign (A~/Do= -3.8 and l. 1 × 10-4, respectively) which are similar in ma

A theory of magnetic vibrational circula

A theory of magnetic vibrational circular dichroism

✍ Thomas H. Walnut 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 445 KB

A theory of type B magnetic vibrational circular dichroism (MVCD) is developed and applied. The motion of the nuclei is treated classically and the momentum correlation between their motion and the electronic motion is treated explicitly.

Magnetic vibrational circular dichroism

Magnetic vibrational circular dichroism of the haloforms

✍ T.R. Devine; T.A. Keiderling 📂 Article 📅 1986 🏛 Elsevier Science 🌐 English ⚖ 368 KB

In the a, symmetry C-H stretch B,,/D, increases from -z lo-' to = 3~ 10-5/cm-' from Cl to I. These values are correlated to AE for electromc excitation and to the methyl halide results.

Magnetic vibrational circular dichroism

Magnetic vibrational circular dichroism of tetraphenylporphine and metallotetraphenylporphyrins

✍ Paul V. Croatto; Timothy A. Keiderling 📂 Article 📅 1988 🏛 Elsevier Science 🌐 English ⚖ 500 KB

Magnetic vibrational circular dichroism spectra of the title compounds are presented for the mid-IR region. The metalloporphytin E. modes have larger A terms than seen previously by an order of magnitude and are 2-3 times larger than in tetraphenylporphine. Comparison to the vibronic model is made.

The vibronic theory of magnetic vibratio

The vibronic theory of magnetic vibrational circular dichroism spectra of metalloporphyrins

✍ Marek Pawlikowski; O.Sonnich Mortensen 📂 Article 📅 1990 🏛 Elsevier Science 🌐 English ⚖ 421 KB

A simple multistate theory of magnetic vibrational circular dichroism (MVCD) in molecules of D, and D, symmetry is presented and used to interpret the MVCD spectrum for the 1346 cm-' fundamental in coppertetraphenylporphyrins. The perils inherent in interpreting such spectra via a single-state theor