title = {Automerization reaction of cyclobutadiene and its barrier height: An ab initio benchmark multireference average-quadratic coupled cluster study},
abstract = {Designed to assist chemists in integrating the results of calculations on molecules and ions into their general body of chemical knowledge. Contains recent contributions from theoretical and computational chemistry to the development of the concept of aromaticity (antiaromaticity) and its expansion into new areas such as organometallic and cluster compounds and three-dimensional structures. Updates the modern status of aromaticity and covers basic principles and experimental applications.},
title = {Further experiments pertaining to the ground state of cyclobutadiene},
pages = {3},
journaltitle = {Journal of the American Chemical Society},
author = {Reeves, P C and Henery, J and Pettit, R},
date = {1969},
langid = {english},
file = {Reeves et al. - 1969 - Further experiments pertaining to the ground state.pdf:/Users/monino/Zotero/storage/D2DINS7E/Reeves et al. - 1969 - Further experiments pertaining to the ground state.pdf:application/pdf}
}
@article{irngartinger_bonding_1983,
title = {Bonding Electron Density Distribution in Tetra-tert-butylcyclobutadiene— A Molecule with an Obviously Non-Square Four-Membered ring},
file = {Full Text PDF:/Users/monino/Zotero/storage/7GLS7QBG/Irngartinger et Nixdorf - 1983 - Bonding Electron Density Distribution in Tetra-ter.pdf:application/pdf}
}
@article{ermer_three_1983,
title = {Three Arguments Supporting a Rectangular Structure for Tetra-tert-butylcyclobutadiene},
file = {Full Text PDF:/Users/monino/Zotero/storage/8VZ7BN4I/Ermer et Heilbronner - 1983 - Three Arguments Supporting a Rectangular Structure.pdf:application/pdf;Snapshot:/Users/monino/Zotero/storage/WN6RRMGU/anie.html:text/html}
}
@article{kreile_uv_1986,
title = {Uv photoelectron spectrum of cyclobutadiene. free cyclobutadiene stable up to high temperatures},
abstract = {The Hel photoelectron spectrum of cyclobutadiene ({CB}) has been obtained under conditions which demonstrate that free {CB} is stable up to temperatures of several hundred °C. A new experimental argument for the rectangular geometry of {CB} is presented. Shake-up structures are unimportant for the interpretation of the {PE} spectrum of {CB}. {LNDO}/S {PERTCI}, {MNDO} {PERTCI} and previous experimental vertical ionization energy estimates accord with the experimental data.},
pages = {140--146},
number = {2},
journaltitle = {Chemical Physics Letters},
shortjournal = {Chemical Physics Letters},
author = {Kreile, Jürgen and Münzel, Norbert and Schweig, Armin and Specht, Harald},