Cyclobutanediyls: a new class of localized biradicals. Synthesis and EPR spectroscopy Jain, Rakesh. ; Sponsler, Michael B. ; Coms, Frank D. ; Dougherty, Dennis A. Abstract Publication: Journal of the American Chemical Society Pub Date: March 1988 DOI: 10.1021/ja00213a006 Bibcode: 1988JAChS.110.1356J