"Three-Spin System with a Twist: A Bis(semiquinonato)copper Complex with Non-Planar Copper(II) Center" . "DE - Spolkov\u00E1 republika N\u011Bmecko" . . "Sarkar, B." . . "Three-Spin System with a Twist: A Bis(semiquinonato)copper Complex with Non-Planar Copper(II) Center" . "P(1P05OC068), P(GA203/03/0821), P(IAA400400505), P(OC D15.10), Z(AV0Z40400503)" . "14" . . . . . "copper; electrochemistry; EPR spectroscopy; radical ligands; spin-spin interactions"@en . "Na z\u00E1klad\u011B nov\u00E9ho, potenci\u00E1ln\u011B trident\u00E1tn\u00EDho radik\u00E1lov\u00E9ho ligandu Qy\u2022-, semichinoniminu s p\u0159\u00EDdavnou thioetherickou S-donorovou funkc\u00ED, to bylo mo\u017En\u00E9 z\u00EDskat t\u0159\u00ED-spinov\u00FD syst\u00E9m (radik\u00E1l/kov/radik\u00E1l, [(Qy\u2022-) CuII(Qy\u2022-)]) se nerovinnn\u00FDm Cu(II) centrem. Tato neobvykl\u00E1 situace je zp\u016Fsobena slabou interakc\u00ED Cu-S, efekt p\u0159ipom\u00EDn\u00E1 m\u011B\u010F v pozic\u00EDch typu 1 v proteinech. Ve srovn\u00E1n\u00ED s rovinn\u00FDmi analogiemi (Chaudhuri, Wieghardt et al., J. Am. Chem. Soc. 2001, 123, 2213 ) distorze kovu m\u00E1 za n\u00E1sledek zm\u011Bn\u011Bn\u00FD spinov\u00FD z\u00E1kladn\u00ED stav, co\u017E bylo prok\u00E1z\u00E1no EPR spektroskopi\u00ED. Spektroelektrochemie uk\u00E1zuje intenz\u00EDvn\u00ED intervalen\u010Dn\u00ED p\u00E1s p\u0159enosu n\u00E1boje ligand-ligand u 2000 nm pro anion [(Qy\u2022-) CuII(Qy2-)]-. Zat\u00EDmco aniontov\u00E9 radik\u00E1lov\u00E9 ligandy poskytuj\u00ED neobvykl\u00E9 komplexy I s p\u0159echodov\u00FDmi kovy v %22norm\u00E1ln\u00EDch %22 konfigurac\u00EDch, mo\u017En\u00E1 distorse p\u0159id\u00E1v\u00E1 dal\u0161\u00ED rozm\u011Br, jak uk\u00E1z\u00E1no zde, dovoluj\u00EDc\u00ED neoby\u010Dejn\u00E9 nastaven\u00ED spinov\u00FDch kombinac\u00ED."@cs . "44" . "Kaim, W." . "Lissner, F." . "T\u0159\u00ED-spinov\u00FD syst\u00E9m s deformac\u00ED geometrie: bis(semichononato)m\u011B\u010Fnat\u00FD komplex s neplan\u00E1rn\u00ED m\u011Bd\u00ED(II)"@cs . "[F6DD178347D7]" . "RIV/61388955:_____/05:00022045!RIV06-AV0-61388955" . . "2103;2106" . "Schleid, T." . . . . "4"^^ . "Fiedler, Jan" . . "7"^^ . "Angewandte Chemie. International Edition in English" . "Three-Spin System with a Twist: A Bis(semiquinonato)copper Complex with Non-Planar Copper(II) Center"@en . "Based on a new, potentially tridentate radical ligand Qy\u2022-, a semiquinoneimine with additional thioether S donor function, it has been possible to obtain a three-spin system (radical/metal/radical, [(Qy\u2022-)CuII(Qy\u2022-)]) with sterically unenforced non-planar copper(II) at the center. This unusual situation is caused by weak Cu-S interaction, an effect reminiscent of type 1 copper sites in proteins. In comparison to planar analogues (Chaudhuri, Wieghardt et al., J. Am. Chem. Soc. 2001, 123, 2213) the distortion of the metal is responsible for a changed spin ground state as detected by EPR. Spectroelectrochemistry reveals a very strong ligand-to-ligand inter-valence charge transfer band at about 2000 nm for the anion [(Qy\u2022-)CuII(Qy2-)]-. While anion radical ligands yield already unusual complexes with transition metals in %22normal%22 configurations, the possible distortion adds another dimension, as shown here, allowing for a striking switch of spin combinations." . "T\u0159\u00ED-spinov\u00FD syst\u00E9m s deformac\u00ED geometrie: bis(semichononato)m\u011B\u010Fnat\u00FD komplex s neplan\u00E1rn\u00ED m\u011Bd\u00ED(II)"@cs . . "RIV/61388955:_____/05:00022045" . "546781" . "1433-7851" . "Based on a new, potentially tridentate radical ligand Qy\u2022-, a semiquinoneimine with additional thioether S donor function, it has been possible to obtain a three-spin system (radical/metal/radical, [(Qy\u2022-)CuII(Qy\u2022-)]) with sterically unenforced non-planar copper(II) at the center. This unusual situation is caused by weak Cu-S interaction, an effect reminiscent of type 1 copper sites in proteins. In comparison to planar analogues (Chaudhuri, Wieghardt et al., J. Am. Chem. Soc. 2001, 123, 2213) the distortion of the metal is responsible for a changed spin ground state as detected by EPR. Spectroelectrochemistry reveals a very strong ligand-to-ligand inter-valence charge transfer band at about 2000 nm for the anion [(Qy\u2022-)CuII(Qy2-)]-. While anion radical ligands yield already unusual complexes with transition metals in %22normal%22 configurations, the possible distortion adds another dimension, as shown here, allowing for a striking switch of spin combinations."@en . . . "1"^^ . . "Ye, S." . . . "Three-Spin System with a Twist: A Bis(semiquinonato)copper Complex with Non-Planar Copper(II) Center"@en . "van Slageren, J." . . . . . .