Crystal structure of 2,6-bis(3-methylpyridinyl)hexahydro-4,8-ethenopyrrolo-[3,4-f]isoindole-1,3,5,7(2H,6H)-tetrone, C₂₄H₂₀N₄O₄

Abstract

C 24 H 20 N4O4, orthorhombic, Pna21 (no. 33), a = 23.942(3) Å, b = 12.366(3) Å, c = 6.823(4) Å, V = 2020.1(9) Å 3 , Z = 4, CCDC no.: 1415279The crystal structure is shown in the gure. Tables 1-3 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters. Source of materialA solution of 3-(aminomethyl)-pyridine and bicyclo[2.2.2]oct-7-ene-2,3,5,6-tetracarboxylic acid dianhydride in N,Ndimethylformamide was re uxed for 3 h, and then the crude product was isolated by ltration and recrystallized from methanol to yield the colourless title compound. Finally, the title compound was dissolved in a small amount of CHCl 3 at ambient temperature for a month to yield a colourless crystalline product. Experimental detailsAll hydrogen atoms were placed geometrically on calculated positions using a riding model with the help of the SHELXL program (AFIX 43 option for aromatic H atoms, AFIX 13 for tertiary and AFIX 23 for secondary H atoms).