The Planar Blatter Radical: Structural Chemistry of 1,4-Dihydrobenzo[e][1,2,4]triazin-4-yls

Piotr Kaszyński; Christos P. Constantinides; Victor G. Young

doi:10.1002/anie.201605612

The Planar Blatter Radical: Structural Chemistry of 1,4-Dihydrobenzo[e][1,2,4]triazin-4-yls

Piotr Kaszyński, Christos P. Constantinides, Victor G. Young

Chemistry (Twin Cities)

Research output: Contribution to journal › Article › peer-review

60 Scopus citations

Abstract

Two planarized analogues of the prototypical Blatter radical (1), peri-annulated 1_Sand 1_O, 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 1_S. Magnetization studies revealed nearly ideal paramagnetic behavior at high temperatures for both radicals 1_Sand 1_Owith one-dimensional ferromagnetic interaction in the former (2J=14.4 cm⁻¹) and antiferromagnetic interactions in 1_Oat low temperatures.

Original language	English (US)
Pages (from-to)	11149-11152
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	55
Issue number	37
DOIs	https://doi.org/10.1002/anie.201605612
State	Published - Sep 5 2016

Bibliographical note

Funding Information:
Support for this project was provided by the National Science Foundation (CHE-1214104) and National Science Center (2014/13/B/ST5/04525). Crystallographic data were collected by Dr. J. Krause through the SCrALS (Service Crystallography at the Advanced Light Source) program at the Advanced Light Source, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231. C.P.C. thanks Prof. David A. Shultz for his hospitality and the use of his laboratory.

Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

magnetic properties
radicals
solid-state structure
structure elucidation
supramolecular chemistry

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abstract = "Two planarized analogues of the prototypical Blatter radical (1), peri-annulated 1Sand 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 1Sand 1Owith one-dimensional ferromagnetic interaction in the former (2J=14.4 cm−1) and antiferromagnetic interactions in 1Oat low temperatures.",

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AB - Two planarized analogues of the prototypical Blatter radical (1), peri-annulated 1Sand 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 1Sand 1Owith one-dimensional ferromagnetic interaction in the former (2J=14.4 cm−1) and antiferromagnetic interactions in 1Oat low temperatures.

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The Planar Blatter Radical: Structural Chemistry of 1,4-Dihydrobenzo[e][1,2,4]triazin-4-yls

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