Matrix isolation and magnetic parameters of septet 3,5‐dicyanopyridyl‐2,4,6‐trinitrene

作者: Sergei V. Chapyshev , Patrik Neuhaus , Dirk Grote , Wolfram Sander

DOI: 10.1002/POC.1622

关键词: Nuclear magnetic resonanceSpectroscopyMatrix isolationSpectral lineMolecular physicsDensity functional theoryPhotodissociationChemistryZeeman energyElectron paramagnetic resonanceResonance

摘要: Septet 3,5-dicyanopyridyl-2,4,6-trinitrene was synthesized together with quintet 2-azido-3,5-dicyanopyridyl-4,6-dinitrene, 4-azido-3,5-dicyanopyridyl-2,6-dinitrene, triplet 2,6-diazido-3,5-dicyanopyridyl-4-nitrene, and 2,4-diazido-3,5-dicyanopyridyl-6-nitrene by photolysis of 2,4,6-triazido-3,5-dicyanopyridine in solid argon at 4 K. The electronic magnetic properties the matrix-isolated nitrenes were studied using electron paramagnetic resonance (EPR) spectroscopy combination density functional theory (DFT) calculations. fine-structure parameters determined high accuracy from spectral simulations. All signals EPR spectra nitrenes, randomly oriented phase, unambiguously assigned based on eigenfield calculations Zeeman energy levels angular dependences fields. Copyright © 2009 John Wiley & Sons, Ltd.

参考文章(10)
William Weltner, Magnetic atoms and molecules ,(1983)
Sergei V. Chapyshev, Dirk Grote, Christopher Finke, Wolfram Sander, Matrix isolation and EPR spectroscopy of septet 3,5-difluoropyridyl-2,4,6-trinitrene. Journal of Organic Chemistry. ,vol. 73, pp. 7045- 7051 ,(2008) , 10.1021/JO800425K
Sergei V. Chapyshev, Richard Walton, Jon A. Sanborn, Paul M. Lahti, Quintet and Septet State Systems Based on Pyridylnitrenes: Effects of Substitution on Open-Shell High-Spin States Journal of the American Chemical Society. ,vol. 122, pp. 1580- 1588 ,(2000) , 10.1021/JA993131C
Nobuyuki Oda, Takeo Nakai, Kazunobu Sato, Daisuke Shiomi, Masatoshi Kozaki, Keiji Okada, Takeji Takui, Molecular and Electronic Spin Structures of High-Spin Polyphenylene-Based Oligonitrenes with High Symmetry; A Semiempirical Approach to Fine-Structure Tensors Molecular Crystals and Liquid Crystals. ,vol. 376, pp. 501- 506 ,(2002) , 10.1080/713738463
Tadatake Sato, Aiko Narazaki, Yoshizo Kawaguchi, Hiroyuki Niino, Götz Bucher, Dirk Grote, J. Jens Wolff, Hans Henning Wenk, Wolfram Sander, Generation and Photoreactions of 2,4,6-Trinitreno-1,3,5-triazine, a Septet Trinitrene Journal of the American Chemical Society. ,vol. 126, pp. 7846- 7852 ,(2004) , 10.1021/JA031794V
E. Ya. Misochko, A. V. Akimov, S. V. Chapyshev, High resolution electron paramagnetic resonance spectroscopy of quintet pyridyl-2,6-dinitrene in solid argon: magnetic properties and molecular structure. Journal of Chemical Physics. ,vol. 128, pp. 124504- 124504 ,(2008) , 10.1063/1.2840351
Axel D. Becke, Density-functional thermochemistry. III. The role of exact exchange Journal of Chemical Physics. ,vol. 98, pp. 5648- 5652 ,(1993) , 10.1063/1.464913
Stefan Stoll, Arthur Schweiger, EasySpin, a comprehensive software package for spectral simulation and analysis in EPR. Journal of Magnetic Resonance. ,vol. 178, pp. 42- 55 ,(2006) , 10.1016/J.JMR.2005.08.013