%0 Journal Article %1 Wanner.1999 %A Wanner, Matthias %A Kaim, Wolfgang %A Lorenzen, Volker %A Preetz, Wilhelm. %D 1999 %J Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences %K ESR anion anion;Raman anion;hexaborate cluster halide hexaborate prepn;IR radical substituted %N 9 %P 1103--1108 %R 10.1515/znb-1999-0902 %T Hexaborate cluster radical anions [B6HalnHal'6-n].bul.- and [B6Hal5R].bul.- (Hal, Hal' = Cl, Br, I; R = H, alkyl). Chemical or electrochemical generation, vibrational, UV-Vis and EPR spectroscopy %V 54 %X Paramagnetic hexaborate clusters with mixed halide, halide/hydride substitution were prepd. from oxidizable dianionic precursors and were characterized by cyclic voltammetry, EPR, vibrational and UV-visible spectroscopy. The EPR studies reveal increasing g anisotropy and EPR line-widths on replacing Cl by Br and esp. by I substituents; however, the replacement of one halide by one alkyl (CH3 or CH2CN) or hydride substituent in [B6Hal,R].bul.- causes decreasing radical persistence and g anisotropy. These results indicate a fairly uniform participation of the cluster core and the substituent sphere in the spin distribution as a major factor for the stability of these non-p radicals. [on SciFinder(R)]

@article{Wanner.1999, abstract = {Paramagnetic hexaborate clusters with mixed halide, halide/hydride substitution were prepd. from oxidizable dianionic precursors and were characterized by cyclic voltammetry, EPR, vibrational and UV-visible spectroscopy. The EPR studies reveal increasing g anisotropy and EPR line-widths on replacing Cl by Br and esp. by I substituents; however, the replacement of one halide by one alkyl (CH3 or CH2CN) or hydride substituent in [B6Hal,R].bul.- causes decreasing radical persistence and g anisotropy. These results indicate a fairly uniform participation of the cluster core and the substituent sphere in the spin distribution as a major factor for the stability of these non-\textgreek{p} radicals. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Wanner, Matthias and Kaim, Wolfgang and Lorenzen, Volker and Preetz, Wilhelm.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2ae77f50d58710c17e331fac95799030d/huebleriac}, doi = {10.1515/znb-1999-0902}, interhash = {548e6de9e97f791eb3fb0ae42a3f43ff}, intrahash = {ae77f50d58710c17e331fac95799030d}, issn = {0932-0776}, journal = {Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences}, keywords = {ESR anion anion;Raman anion;hexaborate cluster halide hexaborate prepn;IR radical substituted}, number = 9, pages = {1103--1108}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Hexaborate cluster radical anions [B6HalnHal'6-n].bul.- and [B6Hal5R].bul.- (Hal, Hal' = Cl, Br, I; R = H, alkyl). Chemical or electrochemical generation, vibrational, UV-Vis and EPR spectroscopy}, volume = 54, year = 1999 }