			Home About us Contact

Tetrazole Derivative (tetrazole + derivative)

Distribution by Scientific Domains

Chemistry	75%

Selected Abstracts

Barium Salts of Tetrazole Derivatives , Synthesis and Characterization

PROPELLANTS, EXPLOSIVES, PYROTECHNICS, Issue 4 2010
Reddy Damavarapu
Abstract The compounds barium tetrazolate (6), barium 5-aminotetrazolate tetrahydrate (7), barium 5-nitriminotetrazolate dihydrate (8), barium bis(1H -5-nitriminotetrazolate) tetrahydrate (9), barium 1-methyl-5-nitriminotetrazolate monohydrate (10), and barium 2-methyl-5-nitriminotetrazolate dihydrate (11) were synthesized by the reactions of barium hydroxide octahydrate and 1H -tetrazole (1), 5-aminotetrazole (2), 1,4H -5-nitriminotetrazole (3), 1-methyl-5-nitriminotetrazole (4), and 2-methyl-5-nitraminotetrazole (5), respectively. The compounds were characterized using multi-nuclear NMR spectroscopy, vibrational (IR and Raman) spectroscopy, elemental analysis, and differential scanning calorimetry. The solid-state structures of 7,11 were determined using low temperature X-ray diffraction and a comprehensive characterization is given. In addition, the sensitivities (impact, friction, electrical discharge) of 6,11 were investigated and bomb calorimetric measurements were carried out. [source]

Crystal structure of a tetrazole derivative

CRYSTAL RESEARCH AND TECHNOLOGY, Issue 3 2006
H. S. Yathirajan
Abstract 5-(4'-Methyl-1,1'-biphenyl-2-yl)-1H-tetrazole(MBT), C28H24N8, CCDC: 223082, F.W.=472.55, triclinic, P1, a=4.99(1)Å, b=14.25(4)Å, c=16.63(5)Å, , = 90.27(5)°, , = 91.19(5)°, , = 90.64(5)°, V = 1182(6)Å3, Z = 4, Dcal = 1.327 Mgm -3, , = 0.084mm -1, F000 = 496, , (MoK,) = 0.71073Å, final R1 and wR2 are 0.0924 and 0.2309, respectively. There are two crystallographically independent molecules in the asymmetric unit. The dihedral angles between the two phenyl rings of the biphenyl ring system are 44.2(2)° and 44.3(2)° for the two molecules respectively. The molecules are stabilized by N-H,N and C-H,N types of intermolecular hydrogen bonds in the unit cell in addition to van der Waals forces. © 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim [source]

Promising antimicrobial agents: Synthetic approaches to novel tricyclic and tetracyclic pyrimidinones with antimicrobial properties

JOURNAL OF HETEROCYCLIC CHEMISTRY, Issue 5 2010
Hatem M. Gaber
New tricyclic pyrimidinone derivatives were obtained from the corresponding thiazolopyrimidinone or hydrazino systems. The annelation of tricyclic hydrazino compound with 1,2,4-triazole and tetrazole moieties gave novel tetracyclic condensed pyrimidinones. The investigation of the antimicrobial properties of tricyclic and tetracyclic pyrimidinones, by agar-well diffusion assay, was carried out against six pathogenic bacteria (Bacillus cereus, Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, Klebsiella spp, and Salmonella typhyrium) and four pathogenic fungi (Aspergillus flavus, Aspergillus niger, Aspergillus fumigatus, and Trichderma horozianum). Most of the compounds tested exhibited some degree of antimicrobial activity against microorganisms. Among these compounds, 4-benzylidenhydrazino-8-cyano-7-(furan-2-yl)thiazolo[3,2- a:4,5- d,]dipyrimidin-9-one (12) showed the most favorable antibacterial activity, while compound 17 showed the highest effect on fungi. Interestingly, tetrazole derivative 19 displayed a remarkable effect on fungi much more than the corresponding 3-substituted triazole derivatives on the one hand, whereas the lowest effect on bacteria on the other. J. Heterocyclic Chem., (2010). [source]

Multinuclear magnetic resonance study of chiral mesoionic oxa- and thiatriazole and tetrazole derivatives: adducts with dirhodium complexes and chiral recognition,

MAGNETIC RESONANCE IN CHEMISTRY, Issue 5 2003
Jaroslaw Ja
Abstract Mesoionic compounds 1,8 were synthesized and their 1H, 13C, 14N, 15N and 17O NMR spectra recorded in the absence and presence of the chiral dirhodium complex Rh*. It is shown that the enantiomers of the mesoionic compounds could be differentiated satisfactorily (,dirhodium method'). Copyright © 2003 John Wiley & Sons, Ltd. [source]