10102-44-0Relevant articles and documents
Product branching ratio of the HCCO + NO reaction
Rim, Kwang Taeg,Hershberger, John F.
, p. 293 - 296 (2000)
Excimer laser photolysis of ketene precursor molocules followed by IR absorption spectroscopy were performed to study the reaction of ketenyl radical (HCCO) radicals with NO at room temperature. CO and CO2 were produced. Considering possible secondary chemistry, CO + (HCNO) was the main product channel, with a branching ratio of 0.88 ± 0.04:1 at 296 K. CO2 + (HCN) was a minor channel, with a branching ratio of 0.12 ±0.04:1. The relative quantum yield for HCCO production in the 193 nm photolysis of CH2CO was estimated to be 0.17 ± 0.02.
14N/15N kinetic isotope effect in the association reaction O(3P)+NO+Ar→NO2+Ar
Umemoto, Hironobu,Tanaka, Kunikazu,Oguro, Shigeki,Ozeki, Ryoji,Ueda, Masashi
, p. 44 - 50 (2001)
The termolecular rate constants for the O(3P)+14NO+Ar→14NO2+Ar and O(3P)+15NO+Ar→15NO2+Ar reactions were determined under room temperature bulk conditions. O(3P) was produced by the pulsed photodissociation of SO2 at 210.4 nm and was monitored by two-photon laser-induced fluorescence at 225.7 nm. The rate constants for 14NO and 15NO were determined to be 5.4±0.2 and 6.1±0.3×10-32cm6s-1, respectively. The error limits are twice the standard errors (S.E.). This isotope effect is opposite to that expected from a statistical model but is similar to that observed in the O3 formation reactions from O(3P) and O2.
Use of a Stopped-flow Technique to measure the Rate Constants at Room Temperature for Reactions between the Nitrate Radical and Various Organic Species
Boyd, Andrew A.,Canosa-Mas, Carlos E.,King, A. Douglas,Wayne, Richard P.,Wilson, Mark R.
, p. 2913 - 2919 (1991)
A stopped-flow apparatus, in which NO3 was detected by optical absorption at λ = 662 nm, has been used to measure overall rate constants at room temperature for reaction of NO3 in systems involving ethene, simple alkanes and chlorinated methanes.Modelling of the reaction with ethene led to a rate constant for the primary step of (1.7 +/- 0.5) * 10 -16 cm3 molecule -1 s-1.However, for H-atom abstraction by NO3 from the saturated organic species, the extensive and largely unquantified secondary chemistry occuring over reaction times of 5 - 20 s meant that only upper limits for the primary rate constants could be accurately assessed (the stoicheiometric factor being assumed to be two or more).The values thus obtained at room temperature were (in units of 10-17 cm3 molecule -1 s-1) 2.7 +/- 0.2, 4.8 +/- 1.7, 60 +/- 10, 0.85 +/- 0.25, 0.48 +/- 0.10 and 6.0 +/- 0.5 for ethane, propane, isobutane (2-methylpropane), acetone, dichloromethane and chloroform.For the reactions of NO3 with ethane and propane, modelling of the kinetics led to estimates of lower limit of the primary rate constants of ethane and propane, modelling of the kinetics led to estimates of lower limits of the primary rate constants of (1.1 +/- 0.2) and (2.2 +/- 0.2) * 10-17 cm3 molecule-1 s-1.No reaction was observed between NO3 and methane or chloromethane, suggesting upper limits (based on the noise levels) for the overall rate constants of these reactions of 8 * 10-19 and 1* 10-18 cm3 molecule-1 s-1.
Reaction of OH with HO2NO2 (Peroxynitric Acid): Rate Coefficients between 218 and 335 K and Product Yields at 298 K
Jimenez, Elena,Gierczak, Tomasz,Stark, Harald,Burkholder, James B.,Ravishankara
, p. 1139 - 1149 (2004)
HO2NO2 (peroxynitric acid, PNA) has an important role in determining the ozone abundance and its changes over time in the lower stratosphere. Rate coefficients (k3(T)) for the reaction of OH with PNA in the gas phase were
Extracellular hydrogen peroxide measurements using a flow injection system in combination with microdialysis probes – Potential and challenges
Mo?hammer, Maria,Schrameyer, Verena,Jensen, Peter ?.,Koren, Klaus,Kühl, Michael
, p. 111 - 123 (2018)
There is a strong need for techniques that can quantify the important reactive oxygen species hydrogen peroxide (H2O2) in complex media and in vivo. We combined chemiluminescence-based H2O2 measurements on a commercially available flow injection analysis (FIA) system with sampling of the analyte using microdialysis probes (MDPs), typically used for measurements in tissue. This allows minimally invasive, quantitative measurements of extracellular H2O2 concentration and dynamics utilizing the chemiluminescent reaction of H2O2 with acridinium ester. By coupling MDPs to the FIA system, measurements are no longer limited to filtered, liquid samples with low viscosity, as sampling via a MDP is based on a dynamic exchange through a permeable membrane with a specific cut-off. This allows continuous monitoring of dynamic changes in H2O2 concentrations, alleviates potential pH effects on the measurements, and allows for flexible application in different media and systems. We give a detailed description of the novel experimental setup and its measuring characteristics along with examples of application in different media and organisms to highlight its broad applicability, but also to discuss current limitations and challenges. The combined FIA-MDP approach for H2O2 quantification was used in different biological systems ranging from marine biology, using the model organism Exaiptasia pallida (light stress induced H2O2 release up to ~ 2.7 μM), over biomedical applications quantifying enzyme dynamics (glucose oxidase in a glucose solution producing up to ~ 60 μM H2O2 and the subsequent addition of catalase to monitor the H2O2 degradation process) and the ability of bacteria to modify their direct environment by regulating H2O2 concentrations in their surrounding media. This was shown by the bacteria Pseudomonas aeruginosa degrading ~ 18 μM background H2O2 in LB-broth. We also discuss advantages and current limitations of the FIA-MDP system, including a discussion of potential cross-sensitivity and interfering chemical species.
Synthesis and Identification by Infrared Spectroscopy of Gaseous Nitryl Bromide
Finlayson-Pitts, Barbara J.,Livingston, Frank E.,Berko, Henry N.
, p. 4397 - 4400 (1989)
The reactions at 298 K of gaseous N2O5 with NaBr(s) or with BrNO(g) in 1 atm of helium were followed by using Fourier transform infrared spectroscopy.In both cases, the formation of infrared absorption bands at 787, 1292, and approximately 1660 cm-1
Kinetics and mechanism of the thermal decomposition of M(NO3)2·nH2O (M = Cu, Co, Ni)
Zivkovic,Zivkovic,Grujicic
, p. 617 - 623 (1998)
This paper presents the results of simultaneous DTA-TG-DTG and DSC studies on the thermal decomposition of Cu(NO3)2·3H2O, Co(NO3)2·6H2O and Ni(NO3)2·6H2O in
First spectroscopic observation of gas-phase HOONO
Nizkorodov,Wennberg
, p. 855 - 859 (2002)
The three-body association reaction of hydroxyl radical with NO2, OH + NO2 + M → HONO2 + M is one of the most important processes in the chemistry of the Earth's lower atmosphere. The first direct spectroscopic observation of HOONO formed in the reaction of OH with NO2 was reported. Rich vibrational structure, consistent with the existence of several HOONO conformers, was observed. A tentative vibrational assignment of the observed bands was suggested, although the complete assignment is not possible without further spectroscopic information. The ratio HOONO/HONO2 formed in the reaction of OH with NO2 was ～ 5% at 253 K and 20 torr.
Photolysis of nitric acid at 308 nm in the absence and in the presence of water vapor
Zhu, Lei,Sangwan, Manuvesh,Huang, Li,Du, Juan,Chu, Liang T.
, p. 4907 - 4914 (2015)
We have re-examined the NOx channels from the 308 nm gas-phase photolysis of nitric acid (HNO3) by using excimer laser photolysis combined with cavity ring-down spectroscopy. The photolysis products were monitored in the 552-560 and 640-648 nm regions. Direct comparison of the photolysis product spectrum in the 640-648 nm region with literature vibronic band origins and line intensities in electronically excited NO2 (NO2) suggests that NO2 is not formed from HNO3 photolysis at 308 nm. A comparison of the photolysis product spectrum in the 552-560 nm region with a standard NO2 spectrum indicates that ground-state NO2 is a photolysis product. We have determined the NO2 quantum yield from the 308 nm HNO3 photolysis. We also investigated HNO3 photolysis in the presence of water vapor. For equilibrated HNO3/H2O mixtures, we did not observe significant variation of product absorption around 552 nm with delay times between the firing of the photolysis and the probe lasers. Transient product absorption measurements at 342.0 and 343.5 nm (respective wavelengths where the peak and valley of HONO absorptions are located) are consistent with ground-state NO2 being the predominant NOx product from the 308 nm photolysis of a HNO3/H2O mixture. Atmospheric implications are also discussed.
Cox, R. A.,Barton, R. A.,Ljungstrom, E.,Stocker, D. W.
, p. 228 - 232 (1984)
Peacock, R. D.,Wilson, I. L.
, (1969)
Volpe, M.,Johnston, H. S.
, p. 3903 - 3910 (1956)
Time-dependent Chemiluminescence from the Surface-catalyzed Recombination of O and NO on Polycrystalline Ni
Ardebili, M. H. Parviz,Grice, Roger,Hughes, Christopher J.,Whitehead, J. Christopher
, p. 2877 - 2885 (1991)
The near-infrared chemiluminescence produced by the surface-catalyzed recombination of nitric oxide with a supersonic beam of atomic oxygen on polycrystalline nickel has been studied.The dependence of the luminescence on time, substrate temperature, O and NO fluxes and pre-exposure to the O atom beam has been investigated.The spectrum of the luminescence has also been determined.Strong initial luminescence was observed decaying with time to a steady state.The use of argon-ion bombardement to clean the sample prior to each experiment was essential to the observation of this time-dependent luminescence.The initial luminescence shows a strong dependence on the substrate temperature, increasing by a factor of 80 when the substrate temperature is reduced from 300 to 195 K.The luminescence showed an initial first-order dependence on the atomic oxygen and nitric oxide fluxes, before levelling off at higher fluxes.The spectrum of the luminescence shows intensity rising from a threshold of 530 nm to a maximum at 800 nm, which is shifted significantly towards longer wavelengths compared to that from the termolecular gas-phase recombination of O and NO.Pre-exposure of the substrate to the O-atom beam suggests that a monolayer of chemisorbed oxygen, which reduces both the binding energy and dissociative adsorption of NO on the substrate, is resposible for the production of a weakly bound electronically excited NO2 which may leave the surface and emit light.A mechanism involving surface poisoning by NO2 product molecules has been suggested.
Kinetics of the Reaction NO + O3 -> NO2 + O2 from 212 to 422 K
Ray, Gary W.,Watson, Robert T.
, p. 1673 - 1676 (1981)
The reaction of nitric oxide with ozone has been studied over a wide range of temperature (212-422 K) by utilizing the discharge flow / mass spectrometric technique.The pseudo-first-order decay of ozone was measured in the presence of a large excess concentration of nitric oxide.The value of the bimolecular rate coefficient at 299 K and the Arrhenius expression determined are k = (1.80 +/- 0.08 ) X 1E-14 cm3 molecule-1 s-1 (T = 299 K) and k = (3.16 +/- 0.90) X 1E-12 exp(-(1566 +/- 80)/T) cm3 molecule-1 s-1.These results are compared with previous measurements.
Stereodynamics of Photon-induced Reactions via Doppler-resolved Laser-induced Fluorescence Spectroscopy: Photodissociation of HONO2 and the Reaction of O(1D) with CH4
Brouard, Mark,Duxon, Simon,Enriquez, Pedro A.,Simons, John P.
, p. 1435 - 1442 (1993)
The application of polarised, Doppler-resolved laser-induced fluorescence (LIF) probing of the products scattered from photon-induced 'half-collision' (photodissociation) and 'full-collision' (bimolecular reaction) processes is developed to include the velocity dependence of their stereodynamics.Fourier-transform inversion procedures are used to derive the products' speed distributions W(v') and vector correlations βij(v') (a) in the photodissociation of HONO2 and (b) in the bimolecular reaction of O(1D) with CH4.In the former example, they provide new insight into the stereodynamics of the photodissociation HONO2 + hν -> (v=0,N) + NO2 ().In the latter, together with newly developed LAB -> CM simulation methods, they provide new insight into the stereodynamics of the reaction O(1D) + CH4 -> OH(v=4,N) + CH3.The OH is shown to be generated with its rotational angular momentum J', constrained to lie in a plane directed perpendicular to its centre-of-mass relative velocity, k'.
Molten sodium nitrite-sodium nitrate-potassium nitrate eutectic: The reactions and spectra of iron(III), cobalt(II), nickel(II) and copper(II) compounds
Eweka,Kerridge
, p. 133 - 138 (1997)
In the sodium nitrite sodium nitrate-potassium nitrate ternary eutectic, iron(III), cobalt(II) and nickel(II) chlorides were found to undergo Lux Flood acid base reactions to form their most stable oxides, which were insoluble, while copper(II) sulphate reacted to form a basic nitrate. The stoichiometry of the reactions in the presence of the competing basic anions was much more similar to those found in pure nitrite than in pure nitrate melts, but the oxidation of nitrite to nitrate, possibly via nitric oxide and nitrogen dioxide, was shown to be important. The green solution of nickel(II) chloride had a spectrum which was much more similar to that in pure nitrite than in pure nitrate melts. Octahedral coordination by nitro, nitrito and nitrato ligands is suggested, in the ratio 2:1:3.
MANUFACTURING PROCESS OF SODIUM HYDROXIDE AND NITRIC ACID FROM THERMOCHEMICALLY SPLIT SODIUM NITRATE.
Takeuchi
, p. 2238 - 2242 (1984)
For the manufacture of sodium hydroxide and nitric acid a new thermochemical process of splitting sodium nitrate has been proposed which consists of (i) splitting of sodium nitrate by iron(III) oxide, (ii) hydrolysis of sodium ferrate, and (iii) absorption of nitrogen dioxide into water. Key reactions (i) and (ii) have experimentally been verified. The overall heat requirement for the process is discussed on the basis of a material and heat flow-sheet of the process constructed.
Reaction of cyclic nitroxides with nitrogen dioxide: The intermediacy of the oxoammonium cations
Goldstein, Sara,Samuni, Amram,Russo, Angelo
, p. 8364 - 8370 (2003)
Piperidine and pyrrolidine nitroxides, such as 2,2,6,6-tetramethylpiperidinoxyl (TPO) and 3-carbamoylproxyl (3-CP), respectively, are cell-permeable stable radicals, which effectively protect cells, tissues, isolated organs, and laboratory animals from radical-induced damage. The kinetics and mechanism of their reactions with .OH, superoxide, and carbon-centered radicals have been extensively studied, but not with .NO2, although the latter is a key intermediate in cellular nitrosative stress. In this research, .NO2 was generated by pulse radiolysis, and its reactions with TPO, 4-OH-TPO, 4-oxo-TPO, and 3-CP were studied by fast kinetic spectroscopy, either directly or by using ferrocyanide or 2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonate), which effectively scavenge the product of this reaction, the oxoammonium cation. The rate constants for the reactions of .NO2 with these nitroxides were determined to be (7-8) × 108 M-1 s-1, independent of the pH over the range 3.9-10.2. These are among the highest rate constants measured for .NO2 and are close to that of the reaction of .NO2 with .NO, that is, 1.1 × 109 M-1 s-1. The hydroxylamines TPO-H and 4-OH-TPO-H are less reactive toward .NO2, and an upper limit for the rate constant for these reactions was estimated to be 1 × 105 M-1 s-1. The kinetics results demonstrate that the reaction of nitroxides with .NO2 proceeds via an inner-sphere electron-transfer mechanism to form the respective oxoammonium cation, which is reduced back to the nitroxide through the oxidation of nitrite to .NO2. Hence, the nitroxide slows down the decomposition of .NO2 into nitrite and nitrate and could serve as a reservoir of .NO2 unless the respective oxoammonium is rapidly scavenged by other reductant. This mechanism can contribute toward the protective effect of nitroxides against reactive nitrogen-derived species, although the oxoammonium cations themselves might oxidize essential cellular targets if they are not scavenged by common biological reductants, such as thiols.
Ray, P. C.
, p. 177 (1905)
Studies with ClONO2: Thermal Dissociation Rate and Catalytic Conversion to NO Using an NO/O3 Chmiluminescence Detector
Anderson, L. C.,Fahey, D. W.
, p. 644 - 652 (1990)
A NO/O3 chemiluminescence detector equipped with a gold catalyst is adapted to provide a measure of the thermal decomposition rate of ClONO2 in an N2/O2 gas mixture and, in a related way, provide the absolute concentration of ClONO2 in a flowing gas stream.The apptoach is to add ClONO2, in the parts per million by volume (ppmv) range, to the flow stream of the detector in the presence of excess NO.As the sample is heated, ClONO2 is thermally dissociated and the subsequent scavenging reaction of ClO with NO produces Cl and NO2.Cl goes on to react with ClONO2 to form NO3 which, in turn, reacts with NO to produce NO2.The loss of NO from the flow is precisely monitored downstream in the detector by the change in the chemiluminescence produced in the reaction of NO with reagent O3.If the reaction rates with NO are given, the NO loss at fixed temperature can be modeled to yield a dissociation rate constant for ClONO2.Results were obtained for temperatures between 353 and 413 K and for pressures in the range of 66-160 Torr (8.8-21.3 kPa).The data is best fit by the expression 1E-6.16exp(-90.7 kJmol-1/RT)cm3s-1molecule-1, which is in good agreement with earlier results.When combined with the rate constant for the association reaction of ClO and NO2, these results yield a larger equilibrium constant for the reactiothan indicated in previous direct measurements.A value for Δaf289.15 for ClONO2 of 22.9 kJmol-1 is obtained from a third-law thermochemical analysis of the data.The initial ClONO2 concentration in the sample is assumed to equal the absolute loss of NO measured when the dissociation and scavenging reactions have gone to completion.This affords the opportunity to calibrate the efficienty of other methods for the detection of ClONO2.Results are presented for the conversion efficienty of ClONO2 to NO found for a gold catalyst at 573 K with CO present as a reducing agent.
Parahalogenated phenols accelerate the photochemical release of nitrogen oxides from frozen solutions containing nitrate
Abida, Otman,Osthoff, Hans D.
, p. 5923 - 5931 (2012)
The photolysis of nitrate anion (NO3-) contained in surface ice and snow can be a regionally significant source of gas-phase nitrogen oxides and affect the composition of the planetary boundary layer. In this study, the photochemical release of nitrogen oxides from frozen solutions containing NO3- in the presence of organic compounds was investigated. Gas-phase nitrogen oxides were quantified primarily by NO-O 3 chemiluminescence detection of NO and NOy (=NO + NO 2 + HONO + HNO3 + -PAN + -AN...) and cavity ring-down spectroscopy of NO2 and total alkyl nitrates (-AN). The photochemical production of gas-phase NOy was suppressed by the presence of formate, methanesulfonate, toluene, or phenol. In contrast, para-halogenated phenols (in the order of Cl > Br > F) promoted the conversion of NO 3- to gas-phase NOy, rationalized by acidification of the ice surface.
Freiling, E. C.,Johnston, H. S.,Ogg, R. A.
, p. 327 - 329 (1952)
Experimental and quantum chemical studies of a new organic proton transfer compound, 1H-imidazole-3-ium-3-hydroxy-2,4,6-trinitrophenolate
Dhamodharan,Sathya,Dhandapani
, p. 280 - 289 (2018)
A new proton transfer compound, 1H-imidazole-3-ium-3-hydroxy-2,4,6-trinitrophenolate (IMHTP), was crystallized by slow evaporation-solution growth technique. 1H and 13C NMR spectral studies confirm the molecular structure of the grown crystal. Single crystal X-ray diffraction study confirms that IMHTP crystallizes in monoclinic system with space group P21/c. Thermal curves (TG/DTA) show that the material is thermally stable up to 198 °C. The crystal emits fluorescence at 510 nm, proving its utility in making green light emitting materials in optical applications. The stable molecular structure was optimized by Gaussian 09 program with B3LYP/6-311++G(d,p) level of basis set. The frontier molecular orbital study shows that the charge transfer interaction occurs within the complex. The calculated first-order hyperpolarizability value of IMHTP is 44 times higher than that the reference material, urea. The electrostatic potential map was used to probe into electrophilic and nucleophilic reactive sites present in the molecule.
Thermal behavior of copper(II) 4-nitroimidazolate
Ji-Zhen,Xue-Zhong,Rong-Zu,Xiao-Dong,Feng-Qi,Hong-Xu
, p. 195 - 201 (2009)
The thermal behavior of copper(II) 4-nitroimidazolate (CuNI) under static and dynamic states are studied by means of high-pressure DSC (PDSC) and TG with the different heating rates and the combination technique of in situ thermolysis cell with rapid-scan
Decomposition of Nitric Oxide over Y-Ba-Cu-O Mixed Oxide Catalysts
Shimada, Hiromichi,Miyama, Susumu,Kuroda, Haruo
, p. 1797 - 1800 (1988)
Y-Ba-Cu-O mixed oxide catalysts supported on MgO were found to have higher catalytic activity for NO decomposition than a commercial Pt supported catalyst at 800 deg C.XPS analysis suggests that the decomposition of NO is facilitated by the redox cycle of Cu.
Cu, Fe and Mn oxides intercalated SiO2 pillared magadiite and ilerite catalysts for NO decomposition
Katabathini, Narasimharao,El Maksod, Islam Hamdy Abd,Mokhtar, Mohamed
, (2021/03/22)
Synthesized magadiite and ilerite samples were pillared with SiO2 and then intercalated with Cu, Fe and Mn oxides to utilize for direct NO decomposition between 400 and 600 °C. Cu-SiO2-pil-ile and Cu-SiO2-pil-mag catalysts exhibited high NO decomposition activity compared to Fe and Mn oxide intercalated catalysts. Remarkably, Cu-SiO2-pil-ile offered 90 % NO conversion and 83 % N2 selectivity at 600 °C. Elemental analysis, XRD, FESEM, DR UV-vis, Raman spectroscopy, N2-adsorption, H2-TPR, O2-TPD and XPS were utilized to study physicochemical characteristics of the materials. The results from XRD and N2 adsorption demonstrated that the samples possessed different pore structures from SiO2-pillared silicates, due to different nature of metal oxides. The Cu-SiO2-pil-ile and Cu-SiO2-pil-mag samples possess a smaller number of Lewis and Br?nsted acid sites compared with Fe and Mn oxide intercalated samples. Presence of Cu2+/Cu+ and Fe3+/Fe2+, and synergism between redox centers are major reason for superior performance in NO decomposition. Therefore, the impact of redox properties and NO adsorption on the surface of the catalyst are significant.
Preparation of g-C3N4 Nanosheets/CuO with Enhanced Catalytic Activity on the Thermal Decomposition of Ammonium Perchlorate
Ma, Dan Na,Li, Xiao Meng,Wang, Xiao Qing,Luo, Yun Jun
, p. 982 - 988 (2021/02/26)
The thermal oxidation etching assisted g-C3N4 nanosheets/CuO was prepared through a facile co-precipitation strategy. In this work, the structure, morphology, and composition of g-C3N4 (UCN, prepared by urea), g-C3N4 nanosheets (TCN, prepared by thermal oxidation etching of UCN), g-C3N4/CuO (UCN/CuO), g-C3N4 nanosheets/CuO (TCN/CuO) were characterized via X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). Furthermore, the catalytic effect of the obtained samples on the thermal decomposition of ammonium perchlorate (AP) was examined by thermal gravimetric analysis (TGA). As a result, in the case of 5 wt% TCN/CuO, the high decomposition temperature of AP decreased by 120.6 °C, which is much lower than that of UCN, TCN, CuO and UCN/CuO. In addition, the exothermic heat released from the decomposition of AP increased from 430.64 J g?1 to 2856.08 J g?1. This evident catalytic activity may be related to the synergistic effect of CuO and TCN. This work provides a novel strategy for the construction of composite catalyst for the thermal decomposition of AP, which is supposed to possess significant potential in the solid propellant field.
Biochemical Characterization, Phytotoxic Effect and Antimicrobial Activity against Some Phytopathogens of New Gemifloxacin Schiff Base Metal Complexes
Mohamed, Amira A.,Elshafie, Hazem S.,Sadeek, Sadeek A.,Camele, Ippolito
, (2021/07/26)
String of Fe(III), Cu(II), Zn(II) and Zr(IV) complexes were synthesized with tetradentateamino Schiff base ligand derived by condensation of ethylene diamine with gemifloxacin. The novel Schiff base (4E,4′E)-4,4′-(ethane-1,2-diyldiazanylylidene)bis{7-[(4Z
