Direct, ESR observation of the localized biradical 1,3-dimethyl-1,3-cyclobutadiyl Jain, Rakesh ; Snyder, Gary J. ; Dougherty, Dennis A. Abstract Publication: Journal of the American Chemical Society Pub Date: November 1984 DOI: 10.1021/ja00335a098 Bibcode: 1984JAChS.106.7294J