نتایج جستجو برای: triazines
تعداد نتایج: 1203 فیلتر نتایج به سال:
Two copper complexes, Cu(SCN)(Mpz(∗)T-(EtO)2) (1) (Mpz(∗)T-(EtO)2=L3) and CuCl(H2O)(Mpz(∗)T-O2) (2) (Mpz(∗)T-O2=L4) were synthesized by the reaction of 2,4,6-tri(3,5-dimethylpyrazol-1-yl)-1,3,5-triazine (L1) or 2,4,6-tri(1H-pyrazol-1-yl)-1,3,5-triazine (L2) with CuCl2·2H2O in anhydrous ethanol and methanol, respectively. The complexes were characterized by elemental analysis, IR spectroscopy, t...
The conventional procedure for the purification of the high affinity K+ uptake ATPase (KdpABC) from Escherichia coli involves a tedious three-column protocol (final enzyme purity, approximately 90%; activity yield, 6.5% (Siebers, A., and Altendorf, K. (1988) Eur. J. Biochem. 178, 131-140)). We have now developed a highly effective one-column (Fractogel TSK AF-Red) protocol yielding an enzyme pr...
The mol-ecule of the title compound, C(18)H(21)N(9), is nearly planar, with the three pyrazole rings aligned at 2.40 (5), 9.27 (5) and 9.71 (5)° with respect to the triazine ring. The triazine ring is planar (r.m.s. deviation = 0.005 Å), the distortion from a hexa-gonal arrangement arising from the angles at the N [112.4 (1)-113.1 (1)°] and C [127.1 (1)-127.6 (1)°] atoms deviating from 120°. Th...
In the title compound, C(14)H(16)ClN(5)O, the phenyl and triazine rings form a dihedral angle of 69.34 (8)°. The morpholine ring adopts a chair conformation. The structure is stabilized by C-H⋯N and intermolecular C-H⋯O hydrogen-bonding inter-actions.
In the title compound, C(8)H(9)N(5)O, the mean planes through the pyrimidine and triazine rings form a dihedral angle of 2.83 (16)°. The amino group adopts a trigonal-planar configuration and forms an intra-molecular resonance-assisted N-H⋯O=C hydrogen bond with the carbonyl group. In the crystal, mol-ecules are linked via inter-molecular N-H⋯N hydrogen bonds into chains of C(2) (2)(6)[R(2) (2)...
The torsion between the central benzene ring and the outer aromatic rings in 1,3,5-tri-p-(tetrazol-5-yl)phenylbenzene (H3TPB-3tz) and the absence of such strain in 2,4,6-tri-p-(tetrazol-5-yl)phenyl-s-triazine (H3TPT-3tz) are shown to allow the selective synthesis of noncatenated and catenated versions of expanded sodalite-type metal-organic frameworks. The reaction of H3TPB-3tz with CuCl2.2H2O ...
The title compound, C(13)H(11)Cl(2)N(3)O(2), was obtained by the reaction of eugenol and cyanuric chloride. The dihedral angle between the benzene and triazine rings is 87.56 (4)°. Two C atoms of the allyl group are disordered over two sites in a 0.72 (2):0.28 (2) ratio.
In the mol-ecule of the title compound, C(20)H(14)N(4), the triazine ring is attached to two phenyl rings and one pyridine ring. In the crystal, mol-ecules are linked by inter-molecular C-H⋯N hydrogen bonds. The crystal packing is also stabilized by C-H⋯π inter-actions.
A new kind of N-ligand based on heptazine derivatives is presented. A trinuclear Cu(II) complex, [(L)2CuCl3](ClO4)3·3CH2Cl2 (L = 2,4,6-tris(di-2-pyridylamino)heptazine), utilizing a pyridine derivative of heptazine has been synthesized and characterized avoiding the inherent solubility problems of heptazine compounds. Thus, this work opens the application of such ligands either in supramolecula...
The syntheses, crystallography and magnetic properties of a series of compounds of formula trans-[Fe(II)(L(1))2(NCX)2] (X = S, Se, BH3 (1-3)), cis-[Fe(II)(L(2))(NCX)2]·CH2Cl2 (X = S, Se, BH3 (4-6)) and trans-[Fe(II)(L(3))(NCX)2]n (X = S, Se (7-8)) are described (L(1) = 6-chloro-N(2),N(2)-diethyl-N(4),N(4)-di(pyridin-2-yl)-1,3,5-triazine-2,4-diamine, L(2) = 6,6'-(1,4,10,13-tetraoxa-7,16-diazacyc...
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