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.
Bilewicz
Elzbieta
E
Department of Crystallography and Crystal Chemistry, University of Łódź, Pomorska 149/153, PL-90236 Łódź, Poland. ebilewicz@uni.lodz.pl
Małecka
Magdalena
M
Grabowski
Sławomir J
SJ
Mlostoń
Grzegorz
G