In the title compound, [Co(C(13)H(8)F(2)O)(C(3)H(9)P)(3)], the cobalt(0) atom is coordinated by three trimethyl-phosphine ligands and a π-coordinated carbonyl group of the 2,6-difluoro-benzo-phenone ligand in a distorted tetra-hedral geometry. The Co-O and Co-C distances are 1.896 (2) and 2.049 (4) Å, respectively.

The title compound, C13H19N3OS, is a new thia-zolidin-4-one derivative prepared and isolated as the pure (3aS,6R)-diastereisomer from (R)-thio-semicarbazone pulegone. It crystallized with two independent mol-ecules (A and B) in the asymmetric unit. The compound is composed of a hexhydro-indazole ring system (viz. a five-membered di-hydro-pyrazole ring fused to a cyclo-hexyl ring) with a thia-zo...

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The structure of the title compound, [Co(C(5)H(6)NO(4))(3)], consists of a Co(III) ion octahedrally coordinated by three bidentate 3-nitro-pentane-2,4-dionate ligands. The complex was prepared via the nitration of tris-(2,4-penta-nedionato-κ(2)O,O')cobalt(III) with a solution of copper(II) nitrate in glacial acetic acid. The central C atom and the nitro group of one 3-nitro-pentane-2,4-dionate ...

Reaction of thionyl chloride with 2-acetyl-1- benzenesulfonylpyrrole semicarbazone (6 c) gave 4 - (1- benzenesulfonyl-2 - pyrrolyl) - 1, 2, 3 -thiadiazole (lc). Selenium dioxide oxidation of 2-acetylpyrazine semicarbazone (10) in acetic acid afforded 4- (2-pyrazinyl) - 1, 2, 3- selenadiazole (4). Reaction of thionyl chloride with compound 10 gave 4- (2-pyrazinyl) - 1, 2, 3- thiadiazole (3)....