14 research outputs found

    N,N′-Dicyclo­hexyl-N′′-(4-nitro­benzo­yl)phospho­ric triamide

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    The P atom in the title compound, C19H29N4O4P, exhibits a tetra­hedral coordination and the phosphoryl and carbonyl groups are anti to each other. Adjacent mol­ecules are linked by N—H⋯O hydrogen bonds to form a layer motif

    Diphenyl (benzyl­amido)phosphate

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    The title compound, C19H18NO3P, was prepared by the reaction of diphenyl phospho­rochloridate and benzyl­amine. In the crystal structure, mol­ecules are linked via N—H⋯O=P hydrogen bonds into extended chains parallel to the c axis

    Transition metal complexes with thiosemicarbazide-based ligands. Part 45. Synthesis, crystal and molecular structure of [2,6-diacetylpyridine bis(S-methylisothiosemicarbazonato)]diazide-iron(III)

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    The template reaction of a warm methanolic solution of FeCl3.6H2O, S-methylisothiosemicarbazidehydroiodide and 2,6-diacetylpyridine in the presence of LiOAc and NaN3 yielded the high-spin complex [Fe(HL)(N3)2], were HL is the monoanion of the ligand 2,6-diacetylpyridine bis(S-methylisothiosemicarbazone). X-Ray analysis of the complex showed its pentagonal-bipyramidal configuration, with pentadenate (N5) HL in the equatorial plane and two monodentate azide groups in the axial positions. Crystal data are: monoclinic, P21/c, a = 1.0263(2), b = 1.2525(2), c = 1.6660(3) nm, b = 98.94°, V = 2.1154 nm3, Z = 4, rx = 1.499 g cm-3, r0 = 1.48 g cm-3, F(000) = 984, m = 9.40 cm-3

    Transition metal complexes with thiosemicarbazide-based ligands. Part 51. Square-planar nickel(II) complex with acetylacetone bis(S-n-propylisothiosemicarbazone) (L). Crystal and molecular structure of [Ni(L-H)]NCS and two isomorphic complexes [Ni(L-H)]I·EtOH and [Ni(L-H)]I·iPrOH

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    The template reaction of a warm methanolic solution of Ni(OAc)2·4H2O, S-n-propylisothiosemicarbazide hydroiodide and acetylacetone yielded the needle- like, brown, diamagnetic complex [Ni(L–H)]I·MeOH, and in the presence of an excess of NH 4NCS, brown, prismatic crystals of the complex [Ni(L–H)]NCS (1), both compounds involving the monoanionic form of the ligand, acetylacetone bis(S-n-propylisothiosemicarbazone), L. Slow recrystallization fromMeOH, EtOH, iPrOH and Me2CO gave the corresponding monosolvent complexes [Ni(L–H)]I·solvent, of which only those involving EtOH and iPrOH were suitable for structural analysis. The crystallographic parameters of [Ni(L–H)]I·EtOH (2) and [Ni(L–H)]I·iPrOH (3) are very similar to each other, showing their structures are isomorphic. The crystal structures of the title compounds consist of the independent ions: NCS-, or I-, and the chemically identical cation [Ni(L–H)]+, where L–H is the monoanion resulting from deprotonation of the acetylacetone moiety, a tetradentate N4 ligand forming a square-planar coordination around a Ni(II) ion. It was found that the isothiosemicarbazide fragment of the ligand has an imido form. The complex cations of the compounds [Ni(L–H)]NCS and [Ni(L–H)]I·EtOH exhibit significant difference only in the conformation of their propyl groups

    Synthesis, structure and thermokinetic studies on perchlorate salts of metal complexes containing formamidine-type ligand

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    Two formamidine-type transition metal complexes of N,N′-bis(4-acetyl-5-methylpyrazol-3-yl) formamidine (ampf) have been synthesized by a template reaction in methanolic solution of the corresponding metal perchlorates and 4-acetyl-3-amino-5-methylpyrazole (aamp) precursor in the presence of triethyl orthoformate. Compounds of composition [M(ampf)(H2O)3](ClO4)2·H2O (M =CoII, NiII) have been formed. The crystal and molecular structures of the compounds have been determined by X-ray crystallography. The complexes were characterized by IR spectroscopy. The thermal stability and the decomposition kinetics of the two potential explosives were determined by thermal methods.JRC.E.3-Materials researc

    Cobalt(II) and cadmium(II) compounds with adamantane-1-sulfonic acid

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    In this work, the syntheses and characterization of two novel compounds of adamantane-1-sulfonic acid (1-AdSO(3)H) with cobalt(II) and cadmium(II) are reported. The results of single crystal X-ray analysis of the compounds revealed that adamantane-1-sulfonate (1-AdSO(3)(-)) in the monoanionic form plays different roles in the investigated compounds. Namely, while in compound [Co(H2O)(6)](1-AdSO(3))(2), six water molecules are coordinated to the cobalt(II) ion and 1-AdSO(3)(-) serves as a counter ion, in compound [Cd(H2O)(4)(1-AdSO(3))(2)], two molecules of 1-AdSO(3)(-) are trans-coordinated to the cadmium(II) ion as a monodentate (O)-ligand and the other coordination sites are occupied by water molecules. The obtained compounds showed moderate activity against Artemia salina.U ovom radu prikazana je sinteza i karakterizacija dva nova jedinjenja adamantan-1-sulfonske kiseline (1-AdSO3H) sa kobaltom(II) i kadmijumom(II). Rezultati rend- genske strukturne analize datih jedinjenja ukazuju da monoanjon adamantan-1-sulfonata (1-AdSO3 pokazuje različit afinitet prema Co(II) i Cd(II) jonima). U kompleksu [Co(H2O)6](1-AdSO3)2, šest molekula vode se koordinuje za Co(II) jon, dok 1-AdSO3 ima ulogu kontrajona. U kompleksu [Cd(H2O)4(1-AdSO3)2] dva jona 1-AdSO3 su koordinovana za Cd(II) jon kao monodentati u trans položaju preko kiseonikovih atoma, dok su ostala koordinaciona mesta zauzeta molekulima vode. Dobijena jedinjenja su pokazala umerenu aktivnost na Artemia salina
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