bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reduction of Organic Compounds with Thiourea Dioxide II. The Reduction of Organic Nitrogen Compounds
Authors: Huang Shui‐Lung , Chen Teng‐Yueh 
Published: June 2015

AbstractReduction of nitrobenzene with thiourea dioxide gave aniline and hydrazobenzene depending on the concentration of sodium hydroxide. Azobenzene and azoxybenzene were found to offer hydrazobenzene as the final product by the same reagent.
Determination of Inorganic Pollutants in River Water with Ion Selective Electrode
Authors: Chu Chi‐Fen , Chang Fu‐Chung , Lee Rong‐Jian , Tsai Hui‐Tuh , Wu Shaw‐Shii 
Published: June 2015

AbstractA method of ion selective electrode was proposed for the analysis of inorganic pollutants such as silver, lead, cadmium, cyanide, fluoride and bromide in river water. Samples taken from five areas, Bih‐Tarn, Wan‐Lung, Taipei Shui‐Yuan‐Ti, Guei‐Shan Industrial Area and Dah‐Hahn‐Shi were analyzed in this investigation.Under the conditions of this work, the ion activities were measured down to 10−7M, and precision of all ions was within ±2%. This method is very simple and precise and is recommended for the analysis of polluted water.
Studies on the Constituents of Murraya Paniculata Jack (I)
Authors: Wu Tian‐Shung , Lin Chung‐Nan , Yang Ling‐Kuang , Lin Shaw‐Tao 
Published: June 2015

AbstractThe components of the flowers and fruits of Murraya paniculata (L.) Jack (Rutaceae) were examined. Scopolin, scopoletin and glucose from the former, and scopoletin and glucose from the latter were isolated and identified, respectively.
Kinetic Studies on the Oxidation of Germanium(II) with Chlorate by Polarographic Analysis
Authors: Pan Kuan , Chen Jie‐Shung , Huang Teh‐Shoon 
Published: June 2015

AbstractThe rate of oxidation of Ge(II) chloride by large excess of ClO2− ions in HCl, NaCl and Na2SO4 mixed solutions was polarographically observed at various H2O+ and Cl− ion concentrations. The observed rate constant, kobs, is expressed by ko=Kobs/(ClO3−)={k1,(H+)+k2K1(Cl−)2+ K3K2(SO42−)} (H+)/{(H+)1+K1(Cl‐)2 +K2(SO42−)} for the following reaction processes,The values were obtained aa k1=1.5410‐3liter2 mole2− sec‐1, k2=5.00×10‐2liter2 mole2− sec‐2 and k2=4.30×10‐3liter2 mole2− sec‐2, K1=1.80× 10‐2, K2= 2.43×10‐2 mole liter‐1 at constant ionic strength I=0.50 M at 30°C.
On the Nature of Electron Traps in Hydrocarbon Glasses at Low Temperatures
Authors: Lin D. P. 
Published: June 2015

AbstractA delicate application of the EPR linewidth theory to the experimentally measured trapped electron (e−ϵ) linewidths in three kinds of isotopic 3‐methyl‐pentane molecules (3MP) concludes that the electron traps are formed by the protons regardless of their relative positions in the molecule. With the cavity radius of <2 Å, the trapped electron charge density in these nonpolar hydrocarbon glasses is shown to be highly delocalized. The slower thermal decay rate of e−ϵ 3MPd14 than in 3MPh14 is most likely related to the deeper trap depth in the former than in the latter leading to a predicted blue shift absorption peak for e−ϵ in 3MPd14 relative to that in 3MPh14 The farther travel distance for mobile electrons before being trapped in these matrices than in polar matrices is attributed to the low trapping cross section rather than a low trap density. Consistency of the empirical cavity radius with the predicted value from current theoretical basis is also cited.
Approximate Self‐Consistent Molecular Orbital Theory I S‐P Separation Model Modification of CNDO‐MO
Authors: Chen Cheng , Chen S. C. , Leu S. W. 
Published: June 2015

AbstractA newly developed approximate self‐consistent molecular orbital formulation, so called: ‘s–p separation model CNDO‐MO method’, is proposed. The Pariser Parr1) and Nishimoto Mataga2) approximations are separately applied to the ns and np (n=l to 3) AO's. The MO's of both closed and open shell cases are formulated. It seems to be a good method for molecular structure interpretation for both polar and nonpolar compounds.
Approximate Self‐Consistent Molecular Orbital Theory II. CNDO‐MO Calculation of Methane Chlorine Derivatives
Authors: Chen S. C. , Chen Cheng 
Published: June 2015

AbstractThe CNDO‐MO method with s‐p separation model modification described in our former work1) is used here. Methane and it's chlorine derivatives are selected as the model molecules for such calculation. The nuclear coordinates are chosen from microwave spectroscopic data2). Both the self consistent behavior and the invariance of orthogonal transformation2) are quite successfully by preformed through the computation procedure. The ionization potentials predicted by Koopmans' theorem are reasonably good. The charge distribution and dipole moments of each case are calculated, and the results obtained by variation of bond parameter β are compared with the available experimental data satisfactorily.
Complexes of Copper (II) Aryl Carboxylates with 2, 6‐Lutidine
Authors: Kumar N. , Kalsotra B.L. , Sharma N.K. 
Published: June 2015

AbstractCopper (II) aryl carboxylates are known to form co‐ordination complexes with various oxygen and nitrogen donors such as pyridine‐N‐oxide1), quinoline and isoquinoline2) diethylamine and dipropylamine1). There is no reference in literature regarding the preparation of complexes of copper (II) aryl carboxylates with 2,6‐lutidine. The present communication describes the preparation of complexes of various copper (II) aryl carboxylates with 2,6‐lutidine in acetone or ethylacetate medium.
Studies on the Components of Formosan Cirsium Species.: Part III Flavonoids of Cirsium Kawakamii Hayata and Cirsium Wallichii DC
Authors: Lin Chung‐Nan 
Published: June 2015

AbstractA flavone glycoside, luteolin‐7‐glucoside (II) was isolated from the aerial portion of Cirsium kawakamii Hayata, and a dibasic acid, fumaric acid (III) was isolated from the aerial portion of C. wallichii DC.
PMR Spectroscopy Studies on Hydrogen Bonding of Iodoform with Several Proton Acceptors
Authors: Chen Ching‐Kaung , Chen Tunli 
Published: June 2015

AbstractThe Benesi‐Hildebrand method was used in NMR Spectroscopy to study the hydrogen bonding of iodoform with ten proton acceptors in cyclohexane at 25.0°C. The values of K's (M‐1) and Δc's (H2) of iodoform systems were determined as followings: N, N–dimethylacetamide, 0.73, 50.5; cyclohexylamine, 0.64, 40.6; cyclohexanone, 0.65, 38.9; cyclopentanone, 0.62, 41.5; 3–pentanone, 0.53, 36.0; acetone, 0.56, 35.0; ethylacetate, 0.51, 32.8; dioxane, 0.54, 31.3; tetrahydrofuran, 0.53, 28.8; diethylether, 0.36, 20.7. The experimental results were discussed. The H–bonding strength decreases in the order as: N, N–dimethylacetamide>cyclohexylamine≈︁ ketone>ester>ether.
Selectivity in the Catalytic Hydrogenation of 2‐Hydroxycyclohexanone
Authors: Chen Chau‐Yang , Huang Shun‐Chueh , Chen Sheng‐Chih 
Published: June 2015

AbstractThe catalytic hydrogenation of 2–hydroxycyclohexanone has been investigated on ruthenium, nickel, rhodium, platinum and palladium. The reaction was completed usually within several hours under an atmospheric pressure of hydrogen at room temperature. It was found that ruthenium and nickel catalysts produce more cis–cyclohexane–1, 2–diol than trans‐diol; while platinum and palladium catalysts give rise to more trans–diol than cis– form.Two adsorbed models, weak and strong, for the substrate were presented to account for the observed hydrogenation selectivity.
Preparation of Complexes of Copper (II) Aryl Carboxylates with Morpholine
Authors: Kumar N. , Kalsotra B. L. , Suri A. K. 
Published: June 2015

AbstractComplexes of copper (II) aryl carboxylates with morpholine were prepared by the interaction of the copper carboxylate with the morpholine equimolar as well as in large excess quantities in acetone medium. The complexes isolated correspond to 1:1 and 1:2 stoichiometry.In continuation of our work on the preparation of complexes of copper (II) aryl carboxylates with nitrogen donors like aliphatic amines,1) heterocyclic amines2) and pyridine–N–Oxide3), the present communication deals with the preparation of complexes of copper (II) aryl carboxylates with morpholine.
Studies on the Ion Exchange Separation of Aspirin, Salicylic Acid and Acetic Acid
Authors: Hsu Tong‐Jung , Llao Chi‐Chow 
Published: June 2015

AbstractThe liquid chromatography of aspirin, salicylic acid and acetic acid using cation exchange resins with aqueous alcohol and water as eluent was described. The results indicated that acetic acid could be separated from aspirin and salicylic acid by hydrogen form cation exchange resin with 25% ethanol or water as eluent. The possibility of using this method to determine the degree of hydrolysis of aspirin was discussed.
Studies on the Constituents of the Root‐Bark of Hernandia Ovigera L. (III)
Authors: Yang Tsang‐Hsiung , Liu Shih‐Chih , Lin Ten‐Shi , Yang Li‐Ming 
Published: June 2015

AbstractIn the course of continuing search for the constituents of the root‐bark of Hemandiu ovigera L., led to the isolation of eight compounds: desoxypodophyllotoxin(I), thalicarpine(III)) dehydrothalicarpine(IV), ovigerine(V), hernangerine(VI), hernandonine(VIII) and two unknown substances, mp. 219–220° and mp. 269–270°. Desoxypodophyllotoxin( I) and thalicarpine(III) exhibited a distinctively cytotoxic activity against nasopharynx carcinoma was reported by S. M. Kupchan et.al3,9. Dehydrothalicarpine( IV) is merely a dehydro product of thalicarpine(III) at C–6a and C–7 of aporphine moiety. The isolation of dehydrothalicarpine(IV) made the first instance from Hernandia ovigera L. Comparison of their components distribution in each part of Hernandia ovigera was shown in Table I.
The Studies of Lanthanide Shift Reagents in NMR Spectroscopy
Authors: Wei Ho‐Hsang , Hwang Jon‐Mou 
Published: June 2015

AbstractThe action of a series of lanthanide chelate complexes LnL3, where Lu=La, Pr, Nd, Sm, Eu, Dy, Ho, Er and Yb; L= dbm (dibenzoylmethanato), dpm (dipivaloylmethanato), and acac acetylactonato), on nmr spectra of 2‐butanol has been studied. The origin of shifting abilities and shifting sign of various lanthanide ions are explained by means of Bleaney's theory.
Effect of High Order Coulombic Interaction on Radiationless Resonance Transfer of Electronic Excitation
Authors: Lin K. C. 
Published: June 2015

AbstractThe decay of sensitizer phosphorescence in a rigid solution modified by the electronic energy transfer by the mechanism of dipole‐dipole interaction mixing with the dipole‐quadrupole interaction is proposed. The rate constant for the transfer process transfer process as (equation).where (equation).Calculations are made of the yield and the decay time of the sensitizer phosphorescence as functions of the activator concentration and the mixing coefficient of dipole‐dipole interaction with dipole‐quadrupole interaction. It is hoped that the proposed mechanism will provide a sound, quantitative basis for analyzing experimental data in a triplet‐singlet energy transfer process. As a demonstration, results indicate that about 9% of the electronic energy radiationlessly transferred from triplet triphenylene‐d12 to singlet Rhodamine B is induced by the electric dipole‐quadrupole coulombic interaction.
Synthesis of Taiwan Cobra Venom Cardiotoxin II Synthesis of Protected Hexapeptide, Sequence 44‐49 and Protected Tripeptide, Sequence 50‐52
Authors: Kong Fann‐Tong , Lin Tz‐Chien , Wong Chi‐Huey , Wang Kung‐Tsung 
Published: June 2015

AbstractThe protected hexapeptide (sequence 44‐49) and the protected tripeptide (sequence 50‐52) of Taiwan Cobra (Naja naja atra) venom cardiotoxin were synthesized by stepwise coupling and fragment coupling methods. The protected hexapeptide is Nps‐Lys(Z)‐Ser‐Ser‐Leu‐VaI‐Leu‐OMe and the protected tripeptides are Nps‐Lys(Z)‐Tyr(Bzl)‐Val‐OMe and Boc‐Lys(Z)‐Tyr(Bzl)‐VaI‐OMe.
9‐Trimethylsilylphenanthrene and 9‐Trimethylsilyl‐9,10‐Dihydroanthracene
Authors: Liu Sheng‐Lieh , Hwang Rong‐Ju , Wu Wen‐Jen , Yang Mei‐Huei 
Published: June 2015

Abstract9‐Trimethylsilylphenanthrene and 9‐trimethylsilyl‐9,10‐dihydroanthracene were synthesized, the latter being photosensitive and oxidizable in exposure to air. When pulverized, the latter electrically charged negative.
Resonance Fluorescence of Gaseous Chlorine Excited by Laser Light
Authors: Choe Jim‐Son , Chang Hua , Hwang Dah‐Min 
Published: June 2015

AbstractA powerful argon ion laser was used to excite gaseous chlorine molecules resonantly from the X1Σ ground electronic state to the excited electronic state. Three progressions of P, R doublets which correspond to the excitation from J=37, 13 and 39 of v=0 of the X1Σ state to v′=22, J′=38; v′=18, J′=12 and v′=16, J′=38 of the state, respectively, and then decaying to various vibrational levels of the X1Σ state were observed. Of those, only the excitation from v=0, J=38 to v′=22, J′=38 transition has been reported before. Due to the extremely small transition probabilities, the spectral lines are much weaker than those of iodine and bromine. Their positions and their relative intensities were analyzed and compared with the result calculated from the known molecular constants and with the known Franck‐Condon factors. Our data are consistent with the calculated results within the range of experimental error.
Studies on the Synthesis of the Sydnone Derivatives and its Properties IV: The Diarylation of Sydnone Compound
Authors: Tien Hsien‐Ju , Yeh Mou‐Yung , Lian Chong‐King 
Published: June 2015

AbstractIn the presence of H2SO4, the sydnone rings were condensed with formaldehyde to give diarylation in 4‐position of the sydnone rings: 3,3′‐diphenyl‐4,4′‐methylenedisydnone is obtained from 3‐phenylsydnone in 61% yield, and 3,3′‐di‐p‐methylphenyl‐4, 4′‐methylenedisydnone is obtained from 3‐(4′‐methylphenyl)sydnone in 70% yield. And the possible reaction mechanism is discussed.
The Reaction of N‐Oxide with Ethyl Bromoacetate
Authors: Tien Hsien‐Ju , Yeh Mou‐Yung , Tien Jack M. 
Published: June 2015

AbstractThe reaction of 4‐methoxypyridine 1‐oxide with ethyl bromoacetate was found to produce a high yield of ethyl glyoxylate, trimethylamine N‐oxide and pyridine 1‐oxide also afforded the glyoxylate but in lower yield in the reaction, and 4‐nitropyridine 1‐oxide was found to be inactive with bromoacetate. Pyridine 1‐oxide and trimethylamine N‐oxide exhibit the same stoichiometry, while 4‐methoxypyridine 1‐oxide follows a different course.
Correlation Between Polarographic Half‐Wave Potentials and Electronic Spectra of Cis‐Trans Complexes of Chromium (III) and Rhodium (III)
Authors: Wei Ho‐Hsiang , Li Ting‐Tung 
Published: June 2015

AbstractA linear correlation between half‐wave potential (E1/2) for the process M(III)→M(II) and the first d‐d transition band (v) of the types cis and trans‐[M(en)2X2]n+ (M=Cr(III) and Rh(III), X=ONO−, NCS−, F−, Cl−, Br−, I−, H2O, DMF, DMSO, n=1, 3) was found. The plots of the difference in half‐wave potential (ΔE1/2) against the difference in the first d‐d transition hand (Δv) for the cis and trans isomer are straight lines. The equations, E1/2=β/nαF+K1 and ΔE1/2=(β/NαF)Δ were derived, and used to describe the linear correlations between polarographic behavior and electronic spectrum.
Phenoxy Derivatives of Dicyclopentadienyl Tungsten(VI) Oxydichloride and Bisindenyl Tungsten (VI) Oxydichloride
Authors: Rastogi M. K. , Multani R. K. 
Published: June 2015

AbstractPhenoxy complexes containing π‐bonded cyclopentadienyl and indenyl groups attached to metals ytterbium1), titanium1), and cerium1). are reported in the literature. These phenoxide derivatives were prepared by the actious of various phenols on the cyclopentadienyl or indenyl metal halide complexes in benzene or tetrahydrofuran. There is no mention the literature about the prepartion and characterization of phenolic derivatives of π‐cyclopentadienyl and π‐indenyl oxotungsten (VI). The effect of electron releasing or electron attracting substiuents in the phenols on the nature of the complexes and the metal‐phenoxide bond has not been reported. The possibility of formation of hydrogen bond between hydrogen atom of the free hydroxyl group of a polyhydric phenoxide group and the oxygen atom attached to the metal atom has not also been explored. This communication deals with such an attempt and reports the synthesis and characterization of 26 phenoxy derivatives of dicyclopentadienyl and bisindenyltungsten (VI) oxydichlorides and conclusions derived from their infrared spectral study.
Studies on the Alkaloid of Formosan Lauraceous Plants XX Alkaloids of Lindera Oldhamii Hemsl. (3)
Authors: Lu Sheng‐Teh , Chen Ih‐Sheng 
Published: June 2015

AbstractThe structure of lindoldhamine (1), isolated from the leaves of Lindera oldhamii Hemsl., has been established as 1, by spectral data and chemical degradations.
Accumulation of Dieldrin, Heptachlor and DDT on Tea Leaves
Authors: Hsieh Bor‐Tsung , Huang Chin‐Wang 
Published: June 2015

AbstractTea leaves grown in a field that had been treated in the nearby top soil with 75% DDT 1kg per hectare, 50% Dieldrin 10kg per hectare, or 2.5% Heptachlor 50kg per hectare were analyzed separately. Dieldrin residues accumulated to a maximum of over 0.20ppm. DDT and both Heptachlor and its metabolite, Heptachlor Epoxide, were much lower than that of Dieldrin, with only a few samples detectable.
Mössbauer Spectra of the Complexes of Iron(II) Bichloride with Monoacetyl and 1, 1′‐Diacetylferrocence Thiosemicarbazone
Authors: Wei Ho‐Hsiang , Horng Dang‐Ming 
Published: June 2015

AbstractComplexes of iron(II) dichloride with monoacetyl and 1, 1′‐diacetylferrocence thiosemicarbazone have been prepared and characterized by means of optical spectra and magnetic measurement, and these structures have been investigated by Mössbauer spectra. It is inferred that the structures for iron(II) complexets of monoacetylferrocence thiosemicarbazone and 1, 1′‐diacetylbis (thiosemicarbazone) are monomer and polymer respectively.
Pressure Effect on the Interaction of Hydrogen Atoms with Ethyl Radicals
Authors: Lin Hau‐Hua , Yeh Chuin‐Tih 
Published: June 2015

AbstractHydrogen atoms from the mercury photosensitized decomposition of hydrogen was allowed to interact with ethylene. Product distributions of this interaction were analyzed with the FID‐gas‐chromatographic technique. Such distribution has been used to interprete, based on a proposed mechanism, the pressure effect on the following chemically activated process:

kP at 35°C has been determined to be 1.7×10‐7sec‐1 from this observed pressure effect.
The Chemical Constituents of the Wood of Keteleeria Davidiana Beissner
Authors: Cheng Y.S. , Lu S.B. 
Published: June 2015

AbstractFrom the hexane and acetone extractive of the wood of Keteleeria davidiana Beissner, α‐pinene, β‐pinene, limonene, α‐copaene, bornyl acetate, β‐elemene, caryophyllene, caryophyllene oxide, α‐selinene, β∼selinene, selin‐11‐en‐4α‐o1, laevojunenol, α‐cyperone, stigmasterol, β‐sitosterol, tetracosyltetracosanoate, docosanyl tetracosanoate, hexacosanyltetracosanoate, tetracosanol, hexacosanol, docosanol, α‐conidendrin and 15‐hydroxydehydroabietic acid were isolated. Straight chain saturated hydrocarbons (C13, C14, C17‐C14) were also obtained.
The Chemical Constituents of the Wood of Pinus Luchuensis Mayer
Authors: Cheng Yu‐Shia , Shiue Gong‐Huey 
Published: June 2015

AbstractFrom the hexane extractive of the wood of Pinus luchuensis Mayer, α‐pinene, β‐pinene, camphene, camphor, 4‐terpineol, α‐terpineol, carvacrol, tetracosanol, hexacosanol, octacosanol, β‐sitosterol, stigmasterol, methyl dehydroabietate, pinosylvin monomethylether, pimaric acid, dehydroabietic acid and straight chain hydrocarbons C23‐C35 were isolated.
Pseudo‐Halide Complexes of Biscyclopentadienyl Niobium(IV) and Bisindenyl Niobium(IV) Dichloride
Authors: Vij P. K. , Bhalla M. S. , Multani R. K. 
Published: June 2015

AbstractReactions of biscyclopentadienyl niobium(IV) dichloride and bisindenyl niobium(IV) dichloride with sodium or potassium salts of various pseudohalides have been studied and the pseudohalide complexes so formed of the formulae (C5H5)2Nb(Ps)2 and (C2H7)2Nb(Ps)2 where Ps may be NC, NCO, NCS, or N3, have been isolated. The complexes have been characterised on the basis of physical measurements, analytical data and infrared spectral studies.
The Resolution of RS‐Mandelic Acid
Authors: Wong Chi‐Huey 
Published: June 2015

AbstractRacemic mandelic acid was resolved through R(‐)‐mandelic acid salt with L‐phenylalanine methyl ester in ethanol; the antipode S(+)‐mandelic acid was then recovered from the mother liquid. Both were prepared in high yield and in highly optical purity.Carboxypeptidase A was also used in the separation of S(+)‐mandelic acid via selective hydrolysis of hippuryl‐RS‐mandelic acid. Comparison of the two methods was discussed.
Two New Sesquiterpenes 3β‐Hydroxycedrol and Widdringtonia Acid II‐A Co‐Crystal of β‐Chamigrenic Acid and Hinokiic Acid
Authors: Kuo Yueh‐Hsiung , Lin Yau‐Tang 
Published: June 2015

AbstractWiddringtonia acid II, a common acidic constituent in Juniperus and Widdringtonia species, and 3β‐hydroxycedrol were isolated from juniperus squamata Lamb. Widdringtonia acid II was proved to be crystals derived from the 1:1 mixture of β‐chamigrenic acid and hinokiic acid. The structures of β‐chamigrenic acid and 3β‐hydroxycedrol were established by chemical and physical evidence. In addition three other crystalline compounds, 7‐oxototarol. hinokiol, and widdrol, were also identified.
Studies on Palladium (II) 2,4‐Dinitrosoresorcinol 6‐Sulphonate Complexes
Authors: Masoud Mamdouh S. , Ghonaim S. A. 
Published: June 2015

AbstractThe reaction between palladium (II) and 2, 4‐dinitrosoresorcinol 6‐sulphonate was studied. Two species with the mole ratio 1:1 and 1:2 were traced. Their stability constants were computed. Elemental analyses, spectral and the magnetic susceptibility measurements of the prepared 1:1 and 1:2 complexes suggested that these complexes are diamagnetic in square planer geometry, with nitrosophenol structure.
Two New Sesquiterpenes 3β‐Hydroxycedrol and Widdringtonia Acid II‐A Co‐Crystal of β‐Chamigrenic Acid and Hinokiic Acid
Authors: Kuo Yueh‐Hsiung , Lin Yau‐Tang 
Published: June 2015

AbstractWiddringtonia acid II, a common acidic constituent in Juniperus and Widdringtonia species, and 3β‐hydroxcedrol were isolated front Juniperus squamata Lamb. Widdringtonia acid II was proved to be crystals derived from the 1:1 mixture of β‐chamigrenic acid and hinokiic acid. The structures of β‐chamigrenic acid and 3β‐hydroxycedrol were established by chemical and physical evidence. In addition three other crystalline compounds, 7‐oxototarol, hinokiol, and widdrol, were also identified.
Electrode Kinetics and Activation Energy of Uranyl‐Ferron Chelate by Polarography
Authors: Kao Chen‐Feng , Lai Tsai‐Teh 
Published: June 2015

AbstractThe uranyl chelate of ferron was investigated polarographically over the pH range 1.98–10.00 and ligand concentration 0.005–0.060.M. A reversible and diffusion controlled reduction wave was obtained, however, when ferron concentration below 0.02M and pH below 5.0, it became irreversible. The chelate species identified were UO2(HA) 2 at pH range 2.5–7.1 and UO2(OH) (A) 2−3 over pH 7.1. The electron‐transfer coefficient, rate constant, diffusion coefficient and activation energy of the reduction process were determined.
Synthesis Of N, N′‐Bis(8‐Quinolyl)‐Oligo‐Methylene‐Diamines from 8‐Aminoquinolines
Authors: Horng Y. S. , Hwang C. C. , Liao C. C. , Liu C. S. , Sheu C. F. , Yu Y. H. 
Published: June 2015

AbstractVarious N′,N‐bis(8‐quinolyl) trimethylenediamines 3a‐3e have been prepared from the corresponding 8‐aminoquinolines 1a‐1e by direct N‐alkylation with 1, 3‐dibromopropane in fair yield (25‐51%). N. N′‐bis(8‐quinolyl) ethylenediamines, 3f and 3g, and N,N′‐bis(8‐(6‐methoxyquinolyl) ]tetramethylenediamine. 3h, may only be synthesized in poor yield via the corresponding oxalamides and succinamide.