Kimya Bölümü: Recent submissions
Now showing items 41-60 of 105
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N-1-(4-tert-butylphenyl)-N-2-hydroxy-alpha-oxo-alpha-phenylacetamidine and N-2-hydroxy-N-1-(4-nitrophenyl)-alpha-oxo-alpha-phenylacetamidine hemihydrate
(Blackwell Munksgaard, 2004)In the title compounds, C18H20N2O2, (I), and C14H11N3O4.-0.5H(2)O, (II), respectively, the oxime groups have an E configuration. In (I), the molecules exist as polymers bound by intermolecular C-H...O and O-H...N hydrogen ... -
N-(1,3-benzothiazol-2-yl)-4-(dimethylamino)-benzylamine
(Int Union Crystallography, 2004)The title compound, C16H15N3S, crystallizes with Z = 8 in space group P2(1)/c. The two crystallographically independent molecules, A and B, are rotational isomers around the C-N bond joining the benzothiazole and ... -
Diaquabis(pyridine-2-carboxamide-kappa N-2(1),O-2)copper(II) squarate
(Blackwell Munksgaard, 2004)The title compound, [Cu(C6H6N2O)(2)(H2O)(2)](C4O4) [or Cu(pia)(2)(H2O)(2).Sq, where pia is picolinamide or pyridine-2-carboxyamide, and Sq is the squarate dianion, (C4O4)(2-)], has been synthesized and the crystal structure ... -
Synthesis, crystal structure and spectrothermal analysis of mer-triaquanicotinamide-orotato cobalt(II) trihydrate
(Wiley-V C H Verlag Gmbh, 2005)The mixed-ligarld orotato (HOr)(2-) complex of cobalt(II) with nicotinamide (NA) [Co(HOr)(H2O)(3)(NA)]center dot 3H(2)O was synthesized and characterized by elemental analysis, magnetic susceptibility, conductivity, spectral ... -
2-(3-methoxysalicylideneamino)-1H-benzimidazole monohydrate
(Int Union Crystallography, 2005)The molecule of the title compound, C15H13O2N3.H2O, is nearly planar, with an intramolecular N ... O hydrogen bond of 2.616 ( 2) Angstrom. It exists in the phenol - imine form and the dihedral angle between the two aromatic ... -
3-acetoxy-2-(acetylamino)pyridinium-1-squarate
(Blackwell Munksgaard, 2005)The title compound, alternatively known as 3-acetoxy-2-(acetylamino)pyridinium betaine of squaric acid, C13H10N2O6, has been synthesized. The bond distances within the squarate ring indicate two possible resonance structures. ... -
Tris(1,10-phenanthroline)nickel(II) squarate octahydrate
(Wiley-Blackwell, 2005)In the title mononuclear [Ni(phen)(3)] sq center dot 8H(2)O complex [phen is 1,10-phenanthroline (C12H8N2) and sq is squarate (C4O42-)], the Ni-II ion has a distorted octahedral coordination geometry composed of six N atoms ... -
(iE)-2-methoxy-6-[(2-trifluoromethylphenylimino)methyl]phenol
(Int Union Crystallography, 2005)The title compound, C15H12NO2F3, adopts the phenol-imine tautomeric form. The two aromatic rings are twisted with respect to each other, with a dihedral angle of 17.83 (19)degrees. O-H center dot center dot center dot N ... -
1,3-Bis(4-methylphenyl)triazene, 1-(4-chlorophenyl)-3-(4-fluorophenyl)triazene and 1-(4-fluorophenyl)3-(4-methylphenyl)triazene
(Int Union Crystallography, 2005)The title 4,4'-disubstituted diphenyl-1,3-triazines, C14H15N3, (I), C12H9ClFN3, (II), and C13H12FN3, (III), each contain a triazene group (-N=N-NH-) having an extended conformation. The dihedral angles between the two ... -
(2-Hydroxyethy1)hydraziniurn(2+) dichloride
(Blackwell Munksgaard, 2005)The crystal structure of the title compound, C2H10N2O2+• 2Cl(-), is built up from one 2-hydroxyethylhydrazinium(2+) cation and two Cl- anions. The molecular structure is stabilized by O-H••• Cl and ... -
(Z)-6-{[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl-amino]methylene}-4-[(E)-(4-ethylphenyl)diazenyl]-cyclohexa-2,4-dienone
(Int Union Crystallography, 2005)The title compound, C19H23N3O4, adopts the keto-amine tautomeric form, with the H atom located on N rather than on O. This H atom is involved in a strong intramolecular hydrogen bond. The configuration around the azo N N ... -
O,O-Bis(2-tert-butyl-4-methoxyphenyl) chlorothiophosphonate
(Int Union Crystallography, 2005)The title compound, C22H30ClO4PS, displays distorted tetrahedral geometry around the P atom. The dihedral angle between the benzene rings is 41.2 ( 2) degrees. Because of the steric effects of the tert-butyl groups, the ... -
O,O-Bis(2-tert-butyl-4-methylphenyl) chlorothiophosphonate
(Int Union Crystallography, 2005)The title compound, C22H30ClO2PS, displays distorted tetrahedral geometry around the P atom. The dihedral angle between the benzene rings is 43.7 ( 4) degrees. The aromatic rings have unusual endocyclic angles as a result ... -
Ethyl 4-chloro-3-oxo-2-(phenylhydrazono)butyrate
(Int Union Crystallography, 2005)The title compound, C12H13ClN2O3, adopts a keto-hydrazo tautomeric form stabilized by an intramolecular N-(HO)-O-... hydrogen bond. The configuration around the C = N bond is trans. The dihedral angle between the aromatic ... -
Redetermination of bis(O,O '-dicyclohexyl phosphorodithioato)nickel(II)
(Blackwell Publishing, 2005)The structure of the title compound, [Ni(C12H22O2PS2)(2)], has been determined previously [Chichang et al. (1987). Chin. J. Struct. Chem. 6, 186], but the current determination provides a significant increase in the precision ... -
(E)-ethyl 4-chloro-3-[2-(2-fluorophenyl)-hydrazono]butanoate
(Int Union Crystallography, 2005)The title compound, C12H12ClFN2O3, adopts a keto-hydrazo tautomeric form stabilized by an intramolecular N-H (. . .) O hydrogen bond. The whole molecule is roughly planar, the largest deviation from the mean plane being ... -
Z)-3-hydroxy-6-[(2-methoxyphenylamino)-methylene]cyclohexa-2,4-dienone
(Int Union Crystallography, 2005)The title compound, C14H13N1O3, adopts the keto-amine tautomeric form, with an intramolecular N - H (...) O resonance-assisted hydrogen bond. The two benzene rings are nearly coplanar [dihedral angle = 14.3 (2)degrees]. ... -
2-Hydroxy-6-[(1-napthylamino)methylene]-cyclohexa-2,4-dien-1-one
(Int Union Crystallography, 2005)The molecule of the title compound, C17H13NO2, is nearly planar and exists in the keto-amine (N-H center dot center dot center dot O) tautomeric form, with a strong intramolecular hydrogen bond of 2.576 (2) angstrom between ...
