Synthesis, characterization and fungitoxicity of the complexes of Hg(II), Cd(II), Cu(II) and Ag(I) with 3-0-tolyloxymethyl-4-aryl-5-mercapto-1,2,4-triazole

Bahel, S. C.; Dubey, B. L.; Nath, Narendra; Srivastava, V. M. L.

doi:10.1016/s0020-1693(00)81803-4

Cited by 8 publications

(2 citation statements)

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“…The present work stems from our study on the reactivity of copper(II) salts with Haat. The ligand Haat (3-acetylamino-1,2,4-triazole) belongs to the group of the 1,2,4-triazole derivatives, studied as precursors of compounds with importance in medicine, biology, and industry . Numerous papers on their coordination chemistry have shown that they can lead to a wide variety of compounds depending upon the nature of the substituent; so, mononuclear, dinuclear, linear trinuclear, and tetranuclear complexes can be found described in the literature. − The ligand Haat is an especially versatile ligand due to the acetylamino substituent, which contains donor atoms itself, and to the possibility of dehydronation (it possesses two potential acidic hydrogens), which enlarges the coordination ability.…”

Section: Introductionmentioning

confidence: 99%

Trinuclear N,N-Bridged Copper(II) Complexes Involving a Cu₃OH Core: [Cu₃(μ₃-OH)L₃A(H₂O)₂]A·(H₂O)_x{L = 3-Acetylamino-1,2,4-triazolate; A = CF₃SO₃, NO₃, ClO₄;x= 0, 2} Synthesis, X-ray Structures, Spectroscopy, and Magnetic Properties

et al. 2000

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The reaction of Haat [Haat = (3-acetylamino-1,2,4-triazole)] with aquated Cu(CF3SO3)2, Cu(NO3)2, and Cu(ClO4)2, respectively, in water results in the trinuclear complexes [Cu3(OH)(aat)3(CF3SO3)(H2O)2](CF3SO3) (1), [Cu3(OH)(aat)3(NO3)(H2O)2](NO3).(H2O)2 (2), and [Cu3(OH)(aat)3(ClO4)(H2O)2](ClO4) (3). The synthesis, X-ray structure, and magnetic and spectroscopic properties of the three title complexes are described. The cation of the three complexes is trinuclear with a Cu3OH skeleton which has the N-N diazine grouping of a triazole ring as bridge between each pair of copper atoms. The Cu3OH units have an average Cu-O distance of 1.991(6) (1), 2.000(6) (2), and 2.007(6) (3) A, an average Cu-Cu' distance of 3.355(2) (1), 3.341(1) (2), and 3.371(3) (3) A, and an average Cu-O-Cu' angle of 114.6(3) degrees (1), 112.4(2) degrees (2), and 115.4(3) degrees (3). The existence of the Cu3OH fragment is confirmed by a pseudotetrahedral oxygen environment, by detection of the OH hydrogen atom, and by stoichiometry. In the trinuclear unit the metal ions show, in the first approximation, a pseudo-square-planar pyramidal environment forming a CuN2O3 chromophore; three of the basal positions are occupied by N,N,O aat ligand atoms, the fourth one is occupied by the oxygen of the central OH group, and the apical site is occupied by an oxygen atom from a water molecule in the case of two of the copper(II) atoms and by an oxygen atom from the coordinating anion in the case of the third metal ion. The three compounds exhibit strong antiferromagnetic interaction, with similar J constants [J = -197.7 (1), J = -190.9 (2), J = -198.2 (3) cm-1], reaching complete spin coupling at ca. 75 K (1)/55 K (2)/95 K (3). At very low temperature the magnetic moment (magnetic susceptibility) falls below that expected for one unpaired electron. Magnetic parameters are discussed on the basis of the structural results and compared with those reported in the literature for related trimeric Cu(II) compounds with N-O or N-N peripheral bridges. Solid state EPR spectra of the three complexes recorded at liquid N temperature show axial signals. Crystal data: C14H20Cu3F6N12O12S2 (1) (Mw = 917.16) crystallizes in the monoclinic space group, P2(1)/c, Z = 4, with cell dimensions a = 13.080(2) A, b = 17.202(2) A, c = 13.840(2) A, beta = 92.40(1) degrees, and V = 3111.3(7) A3, Dcalcd = 1.958 Mg m-3; the final agreement values were R1 = 0.0582 and wR2 = 0.1462 for 7107 unique reflections. C12H24Cu3N14O14 (2) (Mw = 779.07) crystallizes in the triclinic space group, P1, Z = 2, with cell dimensions a = 9.647(2) A, b = 9.985(2) A, c = 15.314(2) A, alpha = 84.080(10), beta = 87.694(10), gamma = 65.030(10) degrees, and V = 1330.1(4) A3, Dcalcd = 1.945 Mg m-3; the final agreement values were R1 = 0.0397 and wR2 = 0.0950 for 7728 unique reflections. C12H20Cl2Cu3N12O14 (3) (Mw = 817.92) crystallizes in the monoclinic space group, P2(1)/a, Z = 4, with cell dimensions a = 14.238(5) A, b = 16.387(6) A, c = 11.678(4) A, gamma = 90.45(2) degrees, and V = 2724.6(18) A3, Dcalcd = 1....

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Section: Introductionmentioning

confidence: 99%

Trinuclear N,N-Bridged Copper(II) Complexes Involving a Cu₃OH Core: [Cu₃(μ₃-OH)L₃A(H₂O)₂]A·(H₂O)_x{L = 3-Acetylamino-1,2,4-triazolate; A = CF₃SO₃, NO₃, ClO₄;x= 0, 2} Synthesis, X-ray Structures, Spectroscopy, and Magnetic Properties

et al. 2000

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“…For an alternative preparative method for the title compound, see: Browne & Polya (1968). For the potential bioinorganic applications of 1,2,4-triazole derivatives, see: Bohm & Karow (1981); Bahel et al (1984).…”

Section: Related Literaturementioning

confidence: 99%

N-(1H-1,2,4-Triazol-5-yl)pyridine-2-carboxamide

et al. 2009

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In the structure of the title compound, C8H7N5O, the pyridine ring and the imidazole ring are nearly coplanar, making a dihedral angle of 2.97 (15)°. An intramolecular N—H⋯O hydrogen bond occurs. In the crystal molecules are connected by intermolecular hydrogen bonds and π–π stacking interactions between neighboring imidazole rings [centroid–centroid distance = 3.5842 (5) Å and off-set angle = 21.77°], leading to the formation of a two-dimensional supramolecular sheet.

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ChemInform Abstract: SYNTHESIS, CHARACTERIZATION AND FUNGITOXICITY OF THE COMPLEXES OF MERCURY(II), CADMIUM(II), COPPER(II), AND SILVER(I) WITH 3‐O‐TOLYLOXYMETHYL‐4‐ARYL‐5‐MERCAPTO‐1,2,4‐TRIAZOLE

Bahel¹,

Dubey²,

Nath³

et al. 1984

Chemischer Informationsdienst

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Synthesis, characterization and fungitoxicity of the complexes of Hg(II), Cd(II), Cu(II) and Ag(I) with 3-0-tolyloxymethyl-4-aryl-5-mercapto-1,2,4-triazole

Cited by 8 publications

References 3 publications

Trinuclear N,N-Bridged Copper(II) Complexes Involving a Cu₃OH Core: [Cu₃(μ₃-OH)L₃A(H₂O)₂]A·(H₂O)_x{L = 3-Acetylamino-1,2,4-triazolate; A = CF₃SO₃, NO₃, ClO₄;x= 0, 2} Synthesis, X-ray Structures, Spectroscopy, and Magnetic Properties

Trinuclear N,N-Bridged Copper(II) Complexes Involving a Cu₃OH Core: [Cu₃(μ₃-OH)L₃A(H₂O)₂]A·(H₂O)_x{L = 3-Acetylamino-1,2,4-triazolate; A = CF₃SO₃, NO₃, ClO₄;x= 0, 2} Synthesis, X-ray Structures, Spectroscopy, and Magnetic Properties

N-(1H-1,2,4-Triazol-5-yl)pyridine-2-carboxamide

ChemInform Abstract: SYNTHESIS, CHARACTERIZATION AND FUNGITOXICITY OF THE COMPLEXES OF MERCURY(II), CADMIUM(II), COPPER(II), AND SILVER(I) WITH 3‐O‐TOLYLOXYMETHYL‐4‐ARYL‐5‐MERCAPTO‐1,2,4‐TRIAZOLE

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Synthesis, characterization and fungitoxicity of the complexes of Hg(II), Cd(II), Cu(II) and Ag(I) with 3-0-tolyloxymethyl-4-aryl-5-mercapto-1,2,4-triazole

Cited by 8 publications

References 3 publications

Trinuclear N,N-Bridged Copper(II) Complexes Involving a Cu3OH Core: [Cu3(μ3-OH)L3A(H2O)2]A·(H2O)x{L = 3-Acetylamino-1,2,4-triazolate; A = CF3SO3, NO3, ClO4;x= 0, 2} Synthesis, X-ray Structures, Spectroscopy, and Magnetic Properties

Trinuclear N,N-Bridged Copper(II) Complexes Involving a Cu3OH Core: [Cu3(μ3-OH)L3A(H2O)2]A·(H2O)x{L = 3-Acetylamino-1,2,4-triazolate; A = CF3SO3, NO3, ClO4;x= 0, 2} Synthesis, X-ray Structures, Spectroscopy, and Magnetic Properties

N-(1H-1,2,4-Triazol-5-yl)pyridine-2-carboxamide

ChemInform Abstract: SYNTHESIS, CHARACTERIZATION AND FUNGITOXICITY OF THE COMPLEXES OF MERCURY(II), CADMIUM(II), COPPER(II), AND SILVER(I) WITH 3‐O‐TOLYLOXYMETHYL‐4‐ARYL‐5‐MERCAPTO‐1,2,4‐TRIAZOLE

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Trinuclear N,N-Bridged Copper(II) Complexes Involving a Cu₃OH Core: [Cu₃(μ₃-OH)L₃A(H₂O)₂]A·(H₂O)_x{L = 3-Acetylamino-1,2,4-triazolate; A = CF₃SO₃, NO₃, ClO₄;x= 0, 2} Synthesis, X-ray Structures, Spectroscopy, and Magnetic Properties

Trinuclear N,N-Bridged Copper(II) Complexes Involving a Cu₃OH Core: [Cu₃(μ₃-OH)L₃A(H₂O)₂]A·(H₂O)_x{L = 3-Acetylamino-1,2,4-triazolate; A = CF₃SO₃, NO₃, ClO₄;x= 0, 2} Synthesis, X-ray Structures, Spectroscopy, and Magnetic Properties