Crystal structures of two substituted thia-zolidine derivatives.

ABSTRACT: In the first of the compounds reported herein, namely 6'-ferrocenyl-6a'-nitro-6',6a',6b',7',9',11a'-hexa-hydro-2H-spiro-[ace-naphthyl-ene-1,11'-chromeno[3',4':3,4]pyrrolo-[1,2-c]thia-zol]-2-one, [Fe(C5H5)(C29H21N2O4S)], (I), the thia-zolidine ring adopts a twist conformation on the methine N-C atoms. In the second compound, viz. 6'-(4-methoxy-phen-yl)-6a'-nitro-6',6a',6b',7',9',11a'-hexa-hydro-2H-spiro-[ace-naphthyl-ene-1,11'-chromeno[3',4':3,4]pyrrolo-[1,2-c]thia-zol]-2-one, [Fe(C5H5)(C26H19N2O5S)], (II), the thia-zolidine ring adopts an envelope conformation with a methine C atom as the flap. In both compounds, the pyrrolidine ring adopts a twist conformation on the thia-zolidine and tetra-hydro-pyran C atoms. The mean planes of the thia-zolidine and pyrrolidine rings subtend angles of 67.30?(1) and 62.95?(7)° in (I) and (II), respectively, while the mean plane of the pyrrolidine ring makes dihedral angles of 76.53?(1) and 87.74?(7)° with the ace-naphthyl-ene ring system in (I) and (II), respectively. In both compounds, an intra-molecular C-H?O hydrogen bond forms an S(7) ring motif. In the crystal of (I), mol-ecules are linked via two different C-H?O hydrogen bonds, forming chains along [001] and [100]. In (II), they are linked through C-H?O hydrogen bonds, forming dimers with an R 2 (2)(10) ring motif while C-H?? inter-actions link the mol-ecules in a head-to-tail fashion, forming chains along the a-axis direction.

SUBMITTER: Viswanathan V 

PROVIDER: S-EPMC4971855 | biostudies-other | 2016 Aug

REPOSITORIES: biostudies-other