M. Yogavel

Crystal and Molecular Structure of an Acridinedione

The title compound, 10-(4-hydroxybenzoylamino)-3,4,6,7,9,10-hexahydro-1,8-(2H,5H)-acridinedione monohydrate,

1,2,3-Trimethoxy-5,11-dihydro-indolo[1,2-b]isoquinoline-5,11-dione

C_20H_2_2N_2O_4.H_2O

2-[2-(5-Ethoxy-4-methoxy-2-nitrophenyl)vinyl]-1H-indole

, consists of partially hydrogenated acridine moiety with one benzoylamino substituent on the central ring. The compound crystallizes in monoclinic system with P21/c space group and the unit cell constants are: a = 11.142(4), b = 12.266(2), c = 13.320(2)

4‐Acet­amido‐2‐methoxy‐5‐[3‐(phenyl­sulfanyl)indole‐2‐carbonyl]­benzoic acid

A^o

3-benzoyl-2-hydroxy-2-methylchromene.

; \beta = 91.76(2)° and V = 1819.6(8)

Supramolecular structures of 2-cyano-3-dimethylamino-N-(4-methylphenyl)acrylamide and 2-cyano-3-dimethylamino-N-(2-methoxyphenyl)acrylamide

A^3

Crystal and molecular structure of 2,6-bis(4-fluorobenzylidene)cyclohexanone

. The central ring (B) adopts boat and the outer rings (A and C) adopt sofa conformations. The water molecule takes part in OW-H...O and N-H...OW hydrogen bond formation with acridinedione and benzoylamino group. The oxygen atom O1 interacts through O-H...O bond with the hydroxyl group and in a head-to-tail link up of molecules that results in the formation of an infinite supra molecular chain.

3,4:9,10-Dibenzo-1,12-di­formyl-5,8-dioxodo­decane

The title compound, C15H19NO5, crystallizes in the monoclinic space group P2(1)/c with four molecules in the asymmetric unit, which differ from each other in the orientation of their methoxy groups. Of the three methoxy groups in each molecule, one lies close to the plane of the molecule and the other two have an out-of-plane conformation where they point in opposite directions. In the crystal structure, four different types of pi-stacks are observed and the molecules pack in two different types of stacking sheets, with alternating molecules A and B in one ribbon and alternating molecules C and D in the other. The supramolecular structure is supported by C-H...O and pi-pi interactions.

10‐Benzyl‐3,3,6,6,9‐penta­methyl‐3,4,6,7,9,10‐hexa­hydro­acridine‐1,8(2H,5H)‐dione

n the title compound,

3,3,6,6-Tetra­methyl-9-(4-pyridyl)-3,4,6,7,9,10-hexa­hydro-1,8(2H,5H)-acridinedione monohydrate

C_{19}H_{18}N_{2}O_{4}