TY - JOUR
T1 - Stable polycyclic anions
T2 - Dianions from overcrowded ethylenes
AU - Cohen, Yoram
AU - Klein, Joseph
AU - Rabinovitz, Mordecai
PY - 1986
Y1 - 1986
N2 - Stable overcrowded ethylene dianions, viz. bifluoren-9-ylidene dianion (1)2- and bi-(4H-cyclopenta[def]phenanthren-4-ylidene) dianion (2)2- were prepared via metal reduction and characterized by 1H and 13C n.m.r. spectroscopy; the spectroscopic results as well as ωβ calculations performed on the hydrocarbons (1) and (2) and the corresponding dianions (1)2- and (2)2- are discussed with respect to their diatropicity and spatial structure.
AB - Stable overcrowded ethylene dianions, viz. bifluoren-9-ylidene dianion (1)2- and bi-(4H-cyclopenta[def]phenanthren-4-ylidene) dianion (2)2- were prepared via metal reduction and characterized by 1H and 13C n.m.r. spectroscopy; the spectroscopic results as well as ωβ calculations performed on the hydrocarbons (1) and (2) and the corresponding dianions (1)2- and (2)2- are discussed with respect to their diatropicity and spatial structure.
UR - http://www.scopus.com/inward/record.url?scp=33645032605&partnerID=8YFLogxK
U2 - 10.1039/C39860001071
DO - 10.1039/C39860001071
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AN - SCOPUS:33645032605
SN - 0022-4936
SP - 1071
EP - 1073
JO - Chemical Communications
JF - Chemical Communications
IS - 14
ER -