2'-(4-Chlorophenyl)-2,3,4,5,6,7-hexahydro-4',7'-methanospiro[9H-fluorene-9,3'-1H-indazole]-1'-carbonitrile and methyl 4'-chloro-2'-(4-chlorophenyl)-1'-cyanospiro[9H-fluorene-9,3'-pyrazolidine]-4'-carboxylate.
The title compounds, C27H22ClN3, (IV), and C24H17Cl2N3O2, (V), were synthesized as part of our ongoing studies on (2+3)-cycloaddition reactions. Compound (V) crystallizes with two molecules in the asymmetric unit. The pyrazolidine ring of compound (IV) adopts a twisted conformation, while in compound (V) it adopts a twisted and an envelope conformation in the two molecules. There are short intermolecular contacts, which can be recognized as unconventional hydrogen bonds, in both structures.
Department of Crystallography and Crystal Chemistry, University of Łódź, Pomorska 149/153, PL-90236 Łódź, Poland. ebilewicz@uni.lodz.pl
Elzbieta
E
Bilewicz
Magdalena
M
Małecka
Sławomir J
SJ
Grabowski
Grzegorz
G
Mlostoń