The Magnetic Properties of Verdazyl Free Radicals. IX. The Crystal Structure of 1,3,5-Triphenyl-6-methylverdazyl Radical

Publisher Website
Google Scholar
Abstract
The crystal structure of 1,3,5-triphenyl-6-methylverdazyl has been determined by X-ray diffraction. The crystals are orthorhombic, with the space group of Pnma and with a=18.25(1), b=16.65(1), c=5.776(2) Å, and Z=4. The structure was deduced from the sharpened Patterson synthesis and was refined by the block-diagonal least-squares method to the final R value of 0.055 for 960 non-zero reflections collected on an automated four-circle diffractometer. The sym-tetrazinyl ring has an asymmetrical boat form, as has been observed in both 1,3,5-triphenylverdazyl and 1,3,5-tri-p-tolylverdazyl. The complete intermolecular overlap was observed in a tilted face-to-face array along the c-axis; this accounts for a fairly strong antiferromagnetic exchange interaction between the unpaired electrons.

This publication has 4 references indexed in Scilit: