title: Preparation and solid-state characterization of the novel mixed biradical *NSNSC-CNSSN*.
abstract: Reduction of the radical-cation [*NSSNC-CNSNS][AsF(6)] with ferrocene affords the novel biradical *NSNSC-CNSSN* containing both 1,2,3,5- and 1,3,2,4-isomeric dithiadiazolyl rings. Biradicals form centrosymmetric dimers with pi(*)-pi(*) interactions between different isomeric rings. Biradical *NSNSC-CNSSN* is diamagnetic in the solid state (C = 0.00035, TIP = 6.5 x 10(-)(5) emu/Oe.mol); however, an increase in paramagnetism was observed upon grinding (C = 0.003, TIP = 4.2 x 10(-)(4) emu/Oe.mol).
authors.affiliation: Department of Chemistry, Dalhousie University, Halifax B4H 4J3, Canada.
authors.forename: T Stanley
authors.initials: TS
authors.lastname: Cameron
authors.forename: Martin T
authors.initials: MT
authors.lastname: Lemaire
authors.forename: Jack
authors.initials: J
authors.lastname: Passmore
authors.forename: Jeremy M
authors.initials: JM
authors.lastname: Rawson
authors.forename: Konstantin V
authors.initials: KV
authors.lastname: Shuvaev
authors.forename: Laurence K
authors.initials: LK
authors.lastname: Thompson