Molecular and crystal structure analysis of some isoxazoline and carbazol derivatives

Molecular and crystal structure of `4,8-Methano-3-(2,5-dimethoxyphenyl)-6-(methylamino)-4,4a,8,exo-8a-tetrahydro-exo-3aH-isoxazolo[5,4-f]isoindole-5,7(6H,7aH)endo-dione (C19H20N2O5) and 9-Butyl-9H-carbazole (C16H17N) have been determined bysingle crystal X-ray diffraction study.The compound C19H20N2O5 which was crystallized in monoclinic system is related toP21/n (No. 14) space group. The structure was solved by direct methods and refined to a finalR=0.0366 for 3404 reflections with I>2?(I). The molecule adopts Z-configuration. Theisoxazoline ring, dimethoxyphenil and dicarboximide rings are approximately coplanar with.As the conformation of the five-membered isoxazole ring's fusion onto the norbornane moietyis exo fashion, the conformation of the six-membered dicarboximid ring's fusion onto thenorbornane moiety is endo fashion Molecule occurs the fusion of the isoxazoline ring anddicarboximide onto norbornane. The inter-bridgehead angles (C6-C7-C10) and (C1-C2-C10)of 99.88(12)0 and 99.67(13)0, respectively, are contracted with respect to the tetrahedral value.C10 atom which norbornane unit has it has Puckering parameters which are Q= 0.952 (2)Å,?= 89.6(2)0 ve Ø=359.59(9)0. This atom deviates -0.851 (3)Å and -0.853 (3)Å from theleastsquares planes of (C7-C8-C9-C1) and (C1-C2-C6-C7) respectively. Similar values of thisdeviation (0.86(1) and 0.84(1)Å) have been reported for the norbornane unit in 6,6-dimethyl-1-phenyl-7-thiatricyclo[3.2.1.13'8]nonane 7,7-dioxide (Estienne et al., 1992). The isoxazolinering adopts an envelope conformation while the norbornane partial has a rowboatconformation. This conformation occurs flap of five members of two rings which are possenvelope conformation. The methyl group which is bounded C4 atom has disorder ofrotation. The crystal structure is stabilized by C-H?O and type intra-molecular, C-H?N andC-H?O type inter-molecular interactions. In the crystall structure intermolecular N-H?Nand O-H?O hydrogen bonds link the molecules to form an infinite one dimensionalpolymeric chain along b-axis.The compound C16H17N which was crystallized in orthorombic system is related toP212121. The structure was solved by direct methods and refined to a final R=0.0749 for1234 reflections with I>2?(I). The tricyclic aromatic ring system is essentially planar, the twoouter rings making a dihedral angle of 4.6(2)0. The ring which consists of N atom is pyrollering. The plane which consists of pyrolle ring (N1-C1-C6-C7-C12) makes dihedral angles of74.0(4)0 with butyle groups (C4H9) In the crystal structure intermolecular and intra moleculertype hyhdrogen bonds not observed.But there is inter-molecular ?-? ring interaction and CH?? type interaction in the crystal structure.