title: The Planar Blatter Radical: Structural Chemistry of 1,4-Dihydrobenzo[e][1,2,4]triazin-4-yls.
abstract: Two planarized analogues of the prototypical Blatter radical (1), peri-annulated 1S and 1O , are demonstrated and provide a new platform for molecular and supramolecular engineering, and for tuning electronic and magnetic properties of the radical. Planarization of 1 results in bathochromic shift to the near-IR region, greater spin delocalization, and anodic shift of the reduction potential only for 1S . Magnetization studies revealed nearly ideal paramagnetic behavior at high temperatures for both radicals 1S and 1O with one-dimensional ferromagnetic interaction in the former (2J=14.4 cm(-1) ) and antiferromagnetic interactions in 1O at low temperatures.
authors: Center for Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363, Łódź, Poland. piotrk@cbmm.lodz.pl.|Department of Chemistry, Middle Tennessee University, Murfreesboro, TN, 37123, USA. piotrk@cbmm.lodz.pl.|Faculty of Chemistry, University of Łódź, Tamka 12, 91-403, Łódź, Poland. piotrk@cbmm.lodz.pl.
authors: Piotr
authors: 0000-0002-2325-8560
authors: P
authors: Kaszyński
authors: Department of Chemistry, North Carolina State University, Raleigh, NC, 27695, USA.
authors: Christos P
authors: 0000-0001-6364-1102
authors: CP
authors: Constantinides
authors: X-ray Crystallographic Laboratory, Department of Chemistry, University of Minnesota, Twin Cities, MN, 55455, USA.
authors: Victor G
authors: VG
authors: Young
keywords: magnetic properties; radicals; solid-state structure; structure elucidation; supramolecular chemistry