5''-氯-1',1''-二甲基-2,2''-二氧代二螺-[吲哚啉-3,2'-吡咯烷-3',3''-吲哚啉]-4'-羧酸甲酯

Kannan Piskala Subburaman, Yuvaraj Panneerselvam, Manivannan Karthikeyan, Reddy Boreddy Siva Rami, Subbiahpandi Arunachalathevar

Department of Physics, S.M.K. Fomra Institute of Technology, Thaiyur, Chennai 603 103, India.

Acta Crystallogr Sect E Struct Rep Online. 2013 May 4;69(Pt 6):o825-6. doi: 10.1107/S1600536813011501. Print 2013 Jun 1.

In the title compound, C22H20ClN3O4, the central pyrrolidine ring adopts an envelope conformation on the N atom. The indolinone systems are individually roughly planar, with maximum deviations from their mean planes of 0.130 Å for the spiro C atom of the indolinone unit and 0.172 Å for the carbonyl C atom of the 5-chloro-1-methyl-indolinone unit. They make dihedral angles of 77.7 (8) and 86.1 (8)° with the mean plane through the central pyrrolidine ring. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds supported by C-H⋯O contacts into chains along the ab diagonal. The structure also features C-H⋯O hydrogen bonds, forming R 2 (2)(8) and R 2 (2)(16) rings and generating a three-dimensional array.

在标题化合物C22H20ClN3O4中，中心吡咯烷环在氮原子上呈信封式构象。吲哚啉酮体系各自大致呈平面状，吲哚啉酮单元的螺碳原子与其平均平面的最大偏差为0.130 Å，5-氯-1-甲基吲哚啉酮单元的羰基碳原子与其平均平面的最大偏差为0.172 Å。它们与穿过中心吡咯烷环的平均平面形成的二面角分别为77.7 (8)°和86.1 (8)°。在晶体中，分子通过N—H⋯O氢键连接，并由C—H⋯O接触支撑，沿ab对角线形成链状结构。该结构还具有C—H⋯O氢键，形成R 2 (2)(8)和R 2 (2)(16)环，并生成三维阵列。