Güncel Gönderiler: Fizik Bölümü
Toplam kayıt 1178, listelenen: 401-420
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Stable topological edge states in a non-Hermitian four-band model
(Amer Physical Soc, 2018)We introduce a one-dimensional non-Hermitian four-band tight-binding lattice system. We find stable topological edge states protected by particle-hole and parity-time symmetries. We show that a topological phase appears ... -
Tetrakis[mu-4-(diethylamino)benzoato-kappa O-2:O ']bis[(N,N-diethylnicotinamide-kappa N-1)zinc(II)]
(Int Union Crystallography, 2009)In the centrosymmetric binuclear title complex, [Zn-2(C11H14NO2)(4)(C10H14N2O)(2)], the two Zn-II ions [Zn center dot center dot center dot Zn = 2.8874 (3) angstrom] are bridged by four 4-(diethylamino)benzoate (DEAB) ... -
Tetraaquabis(isonicotinamide-kappa N-1)cobalt(II) bis(4-formylbenzoate) dihydrate
(Int Union Crystallography, 2009)The asymmetric unit of the crystal structure of the title complex, [Co(C6H6N2O)(2)(H2O)(4)](C8H5O3)(2)center dot 2H(2)O, contains one-half of the complex cation with the Co-II ion located on an inversion center, a ... -
Tetraaquabis(isonicotinamide-kappa N-1)nickel(II) bis(4-formylbenzoate) dihydrate
(Int Union Crystallography, 2009)The asymmetric unit of the title complex, [Ni(C6H6N2O)(2)(H2O)(4)](C8H5O3)(2)center dot 2H(2)O, contains one-half of the complex cation with the Ni-II atom located on an inversion center, a 4-formylbenzoate (FB) counter-anion ... -
Diaquabis(2-bromobenzoato-kappa O)bis(nicotinamide-kappa N-1)nickel(II)
(Int Union Crystallography, 2009)The title Ni-II complex, [Ni(C7H4BrO2)(2)(C6H6N2O)(2)(H2O)(2)], is centrosymmetric. It contains two 2-bromobenzoate (BB) ligands, two nicotinamide (NA) ligands and two water molecules, all of them being monodentate. The ... -
Bis(mu-2-fluorobenzoato-1:2 kappa O-2:O ')(2-fluorobenzoato-1 kappa O-2,O ')(2-fluorobenzoato-2 kappa O)dinicotinamide-1 kappa N-1,2 kappa N-1-dizinc(II)-2-fluorobenzoic acid (1/1)
(Int Union Crystallography, 2009)The asymmetric unit of the title compound, [Zn-2(C7H4FO2)(4)(C6H6N2O)(2)]center dot C7H5FO2, consists of a binuclear Zn-II complex bridged by two carboxyl groups of 2-fluorobenzoate (FB) anions and a 2-fluorobenzoic acid ... -
Supramolecular cobalt(II)-pyridine-2,5-dicarboxylate complexes with isonicotinamide, 2-amino-3-methylpyridine and 2-amino-6-methylpyridine: Syntheses, crystal structures, spectroscopic, thermal and antimicrobial activity studies
(Elsevier Science Sa, 2010)The mer-[Co(pydca)(H(2)O)(3)(ina)]center dot H(2)O (1), (2a3mpyH)(2)[Co(pydca)(2)(H(2)O)(2)]center dot 2H(2)O (2) and (2a6mpyH)(2)[Co(pydca)(2)(H(2)O)(2)]center dot 2H(2)O (3) complexes (H(2)pydca: pyridine-2,5-dicarboxylic ... -
Novel boron compounds of 2,3-and 2,5-pyridinedicarboxylic acids
(Elsevier Science Sa, 2012)The (Hea)[B(ph)(2)(2,3-pydc)] (1) and (Hea)[B(ph)(2)(2,5-pydc)] (2) boron compounds (2,3-H(2)pydc = 2,3-pyridinedicarboxylic acid, 2,5-H(2)pydc = 2,5-pyridinedicarboxylic acid, Hea = ethanolammonium) were synthesized and ... -
Hydrogen Bonded Supramolecular Network from a Mixed Valence Cobalt System: Synthesis and Crystal Structure of [Co(H2O)(6)][Co(pydc)(2)(en)](2)center dot 14H(2)O
(Springer/Plenum Publishers, 2012)The [Co(H2O)(6)][Co(pydc)(2)(en)](2)center dot 14H(2)O (1) compound (H(2)pydc = Pyridine-2,3-dicarboxylic acid and en = ethylenediamine) was synthesized and characterized by elemental analysis, magnetic and spectroscopic ... -
A series of silver(I) coordination polymers with saccarinate and flexible aliphatic diamines
(Academic Press Inc Elsevier Science, 2017)A series of Ag(I) complexes with aliphatic diamines having a different chain length (NH2-(CH2)(n)-NH2, n=4-9), with the formulas, [Ag(mu-sac)(mu-db)(0.5)](n) (1), {[Ag-4(sac)(4)(mu-dp)2]center dot 4H(2)O}(n) (2), ... -
Phosphorus-nitrogen compounds. Part 20: Fully substituted spiro-cyclotriphosphazenic lariat (PNP-pivot) ether derivatives
(Pergamon-Elsevier Science LTD, 2010)The condensation reactions of partly substituted spiro-cyclotriphosphazenic lariat (PNP-pivot) ethers, N3P3[(o-NHPhO)(2)R]Cl-4 [where R = -CH2CH2- (1) and -CH2CH2OCH2CH2- (2)] with morpholine and 1,4-dioxa-8-azaspiro[4,5]decane ... -
The synthesis of new pyrrolo[1,2-a]perimidin-10-one dyes via two convenient routes and its characterizations
(Elsevier Sci LTD, 2012)Efficient synthesis of pyrrolo[1,2-a]perimidin-10-ones (4, 8) are accomplished via two new convenient methods in moderate yields. The first method is the reaction of oxalyl chloride with heterocyclic ketene aminals (HKAs) ... -
Preparation of perinones via a novel multicomponent synthesis of isoindole scaffold
(Pergamon-Elsevier Science LTD, 2011)A convenient procedure for the preparation of isoindole derivatives is described. The method is based on the multicomponent reaction of heterocyclic ketene aminals with dialkyl acetylenedicarboxylates in presence of DMAP. ... -
Synthesis and Structural Characterization of Pyrrole Heterocyclic Systems Bearing Amino Acid Units: Novel Pyrrol-3-ones, Pyrrolo[1,2-a][3,1]benzoxazines, and Pyrrolo[2,1-b][1,3]oxazoles
(Wiley-Blackwell, 2014)Furan-3-one derivatives 1 were converted into 2-hydroxy-pyrrole-3-ones 4 by reacting with various - and -amino acids. In contrast, the reaction of furan-3-ones and 1-aminocyclobutanecarboxylic acid afforded spiro-pyrrolo ... -
A photoluminescent dinuclear silver(I) complex exhibits C-H center dot center dot center dot Ag close interactions and a new coordination mode of the pyridine-2,3-dicarboxylate
(Elsevier Science BV, 2011)In this study, a novel dinuclear Ag(I)-pyridine-2,3-dicarboxylate complex with 1,3-diaminopropane ligand (pda). [Ag(2)(mu-2,3-pydc)(2)(Hpda)(2)]center dot 2H(2)O (H(2)2,3-pydc = pyridine-2,3-dicarboxylic acid), has been ... -
Aquabis(4-formylbenzoato-kappa O-2(1),O-1 ')bis(isonicotinamide-kappa N-1)cadmium(II) monohydrate
(Int Union Crystallography, 2009)The asymmetric unit of the title Cd-II complex, [Cd(C8H5O3)(2)(-)(C6H6N2O)(2)(H2O)]center dot H2O, contains two 4-formylbenzoate (FB), two isonicotinamide (INA) ligands, one coordinated and one uncoordinated water molecule; ... -
Hydrogenation of olefins catalyzed by Pd(II) complexes containing a perfluoroalkylated S,O-chelating ligand in supercritical CO2 and organic solvents
(Elsevier Science BV, 2010)Pd(II) complexes with the tridentate ligands heptadecafluorodecyl-thiophene-2-carboxylate (L-1 = SOSRf1, R-f1 = (CH2)(2)(CF2)(7)CF3) and heptadecafluorononil thiophene-2-carboxylate (L-2 = SOORf2, R-f2 =(CH2)(CF2)(7)CF3) ... -
Multifunctional nanoenzymes from carbonic anhydrase skeleton
(Elsevier Sci LTD, 2018)Carbonic anhydrase (carbonic dehydratase) (CA) is a metalloenzyme that contains zinc (Zn2+) ion in its active site. CA catalyzes the reversible conversion of carbon dioxide and water to bicarbonate and protons. Zn2+ ions, ... -
Synthesis, characterization and catalytic activity of novel Co(II) and Pd(II)-perfluoroalkylphthalocyanine in fluorous biphasic system; benzyl alcohol oxidation
(Wiley, 2009)Tetra kis[heptadecafluorononyl] substituted phthalocyanine complexes were prepared by template synthesis from 4-(heptadecafluorononyloxy)phthalonitrile with Co(CH3COO)(2)center dot 4H(2)O or PdCl2 in 2-N,N-dimethylaminoethanol. ... -
Catalytic Activity of a Thermoregulated, Phase-Separable Pd(II)-perfluoroalkylphthalocyanine Complex in an Organic/Fluorous Biphasic System: Hydrogenation of Olefins
(Springer, 2009)A fluoroalkene-soluble tetrakis[heptadecafluorononyl]-substituted Pd(II)-phthalocyanine complex has been studied for olefin (styrene, 1-octene, trans-2-octene and cyclohexene) hydrogenation with molecular hydrogen in an ...