Ethyl 9-fluoro-5,12-dioxo-5,12-dihydro-indolizino[2,3-g]quinoline-6-carboxyl-ate.
In the title mol-ecule, C(18)H(11)FN(2)O(4), the fused four- ring system is essentially planar, with an r.m.s. deviation of 0.032 Å. In the crystal, mol-ecules are connected by π-π stacking inter-actions [centroid-centroid distances = 3.5684 (9) and 3.8247 (9) Å] into chains along [100].
Da-Li
DL
Zhang
Li-Ping
LP
Zhang
Jia
J
Yao
Xi-Wei
XW
Wu
Lin-Kun
LK
An