The Jahn-Teller and Related Effects in the Cyclopentadienyl Radical, Part II: Vibrational Analysis of the Ã2A′′

نویسندگان

  • Brian E. Applegate
  • Andrew J. Bezant
  • Terry A. Miller
چکیده

The laser excited, jet-cooled Ã2A′′ 2 − X̃2E′′ 1 electronic spectrum of the cyclopentadienyl radical yields detailed information about the vibronic structure of both its à and X̃ states. A straight-forward assignment of the à vibronic structure is presented. The X̃ state vibronic structure reveals a comprehensive picture of the Jahn-Teller distortion of its potential energy surface. The molecular parameters characterizing the Jahn-Teller interaction provide the stabilization energy and distorted geometry, which are compared to previous experimental and ab initio results.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The Jahn-Teller and Related Effects in the Cyclopentadienyl Radical, Part I: The Ab Initio Calculation of Spectroscopically Observable Parameters

Ab initio calculations are performed for the X̃2E′′ 1 and à 2A′′ 2 states of the cyclopentadienyl radical. An important goal of these calculations is to guide the analysis of the experimentally observed Ã2A′′ 2 -X̃ 2E′′ 1 electronic spectrum. Vibrational frequencies for both the X̃ and à state are reported. Large changes

متن کامل

A Computational Study to Find the Vibrational Modes Connected with Specific Molecular Structures of Calculated Compound

The purpose of this research is to provide a deeper understanding of the planar high- symmetry configuration instability. In the ideal case, the distortion corresponds to the movements of nuclei along normal modes that belong to non-totally symmetric irreps of the high symmertry (HS) point group of molecule. The analysis of the structural distortion from the HS nuclear arrangements of the JT ac...

متن کامل

Experimental investigation of the Jahn-Teller effect in the ground and excited electronic states of the tropyl radical. Part II. Vibrational analysis of the A 2E"3-X 2E"2 electronic transition.

Laser-induced fluorescence (LIF) and laser-excited dispersed fluorescence (LEDF) spectra of the cycloheptatrienyl (tropyl) radical C7H7 have been observed under supersonic jet-cooling conditions. Assignment of the LIF excitation spectrum yields detailed information about the A-state vibronic structure. The LEDF emission was collected by pumping different vibronic bands of the A 2E"3<--X 2E"2 el...

متن کامل

The Jahn-Teller and Related Effects in the Silver Trimer, Part II: Vibrational Analysis of the ÃE ′′-X̃2E ′ Electronic Transition

The laser excited, jet-cooled Ã2E′′ − X̃2E′ electronic spectrum of the silver trimer yields detailed information about its Ãand X̃-state vibronic structure. Following extensive parameter fitting, the absorption and emission spectra are simulated and the bands are assigned. The JahnTeller analysis includes both linear and quadratic coupling terms, considered simultaneously with spin-orbit coupling...

متن کامل

Vibronic coupling in cyclopentadienyl radical: a method for calculation of vibronic coupling constant and vibronic coupling density analysis.

A method of calculation of vibronic or electron-phonon coupling constant is presented for a Jahn-Teller molecule, cyclopentadienyl radical. It is pointed out that symmetry breaking at degenerate point and violation of Hellmann-Feynman theorem occur in the calculations based on a single Slater determinant. In order to overcome these difficulties, the electronic wave functions are calculated usin...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2000