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Synthesis, Molecular and Crystal Structure of Two Tricyclic N-Aminoimides

Struga A., Mirosław B., Wawrzycka-Gorczyca I., Kossakowski J., Kozioł A.

Polish Journal of Chemistry

2007

Vol. 81, nr 1

51-59

Two new N-aminoimides, 2-amino-4,7-epoxy-3a,4,7,7a-tetrahydro-1H-isoindole- 1,3(2H)dione (I) and 2-amino-8-isopropyl-5-methyl-4,7-ethane-3a,4,7,7a-tetrahydro- 1H-isoindole-1,3(2H)-dione (II), have been synthesized. Both compounds are exo,cis isomers. Crystals of (I) and (II) are noncentrosymmetric with two crystallographically independent molecules (Z’ = 2) in the asymmetric unit. The N-amine groups of the symmetry independent molecules differ in their environment, forming single or bifurcated N–H...O hydrogen bonds. Voluminous hydrocarbon parts evoke orthogonal electrostatic interactions between the imide ring and carbonyl or ether O atoms in (II) and (I), respectively, with C/N...O distances smaller than 3.2 (the shortest being of 2.9 ).

Synthesis of New Derivatives of 1,2,4-Triazol-3-one

Struga M., Dobosz M., Kossakowski J., Dybała I., Stępniak K., Kozioł A.

Polish Journal of Chemistry

2006

Vol. 80, nr 6

889-897

Reactions of nucleophilic substitution on 2,5-diphenyl-, 1,5-diphenyl-, and 5-phenyl-1,2,4-triazol-3-one were studied. Both O- and N-derivatives were obtained. Molecular structure proposed for this group of compounds was confirmed by X-ray structure analysis of selected crystals (4a, 2b, 4b, 5c).

Chemoodporne pompy CPX

Kossakowski J.

Pompy, Pompownie

2000

nr 3 (89)

16-16

Wymogi i czynniki kształtujące konstrukcje pomp higienicznych na przykładzie pomp krzywkowych - skrót referatu

Carrington S., Kossakowski J.

Pompy, Pompownie

1999

nr 10 (84)

8-10