Dithiazolylradikale aus Dithiazolium‐Salzen

Metal-radical coordination complexes of thiazyl and selenazyl ligands

“…The 6,7-dimethyl-1,4-dioxo-naphtho [2,3-d] [1,2,3]dithiazolyl ligand (67Me 2 pDTANQ) is a dimethyl derivative of 1,2,3-dithiazolyl-p-naphthoquinone [99], designed to be a better σ-donor and to be more soluble than the parent species. There are two possible coordination sites, a bidentate N,O-chelation pocket and monodentate Ocoordination site on the opposite side of the molecule.…”

Trinuclear Mn(ii) complex with paramagnetic bridging 1,2,3-dithiazolyl ligands

“…that was observed in solution EPR by Mayer in 1981. 13 The latter is a structural isomer of the 1,3,2-dithiazolyl-pnaphthoquinone recently detected in solution EPR by Passmore. 14 We have incorporated methyl groups in the framework of ligand 1 in order to increase the sigma donor ability of the radical and ensure its function as a ligand.…”

Pulse EPR and ENDOR study of 1,2,3-benzodithiazolyl, 2,1,3-benzothiaselenazolyl and 1,2,3-benzodiselenazolyl radicals

“…One can see only a slight increase of the proton hfi values upon replacement of one or two sulfur atoms by selenium, which is in good agreement with the quantum-chemical data. The correct assignment of the smallest two hfi constants of 1 has been uncertain, 15,27,28 but comparison of our experimental and calculated 1 H hfi tensors counts in favour of assigning the smallest isotropic constant to H 2 , as in ref. 15 and 28.…”