TY  - JOUR
A1  - Kaim, Wolfgang
A1  - Hänel, Peter
A1  - Bock, Hans
T1  - Die Reduktion von Triphenylphosphan-Derivaten zu ihren Radikalanionen und zum Dibenzophosphol-Radikaldianion [1]
T1  - The Reduction of Triphenylphosphane Derivatives to their Radical Anions and to the Radical Dianion of Dibenzophosphole [1]
T2  - Zeitschrift für Naturforschung. Teil B, Chemie, Biochemie, Biophysik, Biologie
N2  - Triphenylphosphane 1, its oxide 2 and sulfide 3 undergo one-electron reduction at a mercury cathode in DMF to yield the corresponding radical anions. ESE analysis of the paramagnetic species is facilitated by deuteration and suggests a pyramidal geometry of the radicals. Reduction with potassium metal in DME at low temperature yields also radical anions for 2 and 3. The phosphane 1, however, reacts under phenyl cleavage and potassiumphenyl-assisted ring closure to the dianion of 5H-dibenzophosphole 4. This radical 4· ⊖⊖ is also obtainod by alkali metal reduction of P-phenyldibenzophosphole o, and its spin distribution is compared to iso-.-π-electronic radicals containing CH, N, O, S, or Se links instead of the phosphorus atom.
KW  - Triphenylphosphane
KW  - Dibenzophosphole
KW  - Reduction
KW  - Radicals
KW  - ESR Spectra
Y1  - 2016
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/41713
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-417132
SN  - 0175-0992
SN  - 0932-0776
N1  - © 1946 – 2014: Verlag der Zeitschrift für Naturforschung. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. (CC BY-NC-ND 3.0)
VL  - 37
IS  - 11
SP  - 1382
EP  - 1387
PB  - De Gruyter
CY  - Berlin [u.a.]
ER  -