bluuebunny/crossref_metadata_2025_split huggingface dataset:
Studies of Thermal Transesterification of Phenylurethane by High Pressure Liquid Chromatograph
Authors: Young Yong Hwa , Lin Horng Min , Lin Ming Yuan 
Published: June 2015

AbstractThermal transesterification of phenylurethane with n‐octanol was carried out in DMSO. It was found that the reaction followed first‐order kinetics with an average rate constant of 8.630 × 10−5 sec −1at 140°C. High pressure liquid chromatograph technique was employed to analyze chemical species in the course of the reaction. The reaction obeyed Arrhenius equation closely between 133°C and 155°C with activation energy of 29.6 kcal/mole and entropy of activation of −8.2 cal/mole deg at 140°C. An intramolecular cyclic intermediate mechanism was proposed for this reaction.
Observation of Anti‐Stokes Resonance Raman Signals of Gaseous Bromine with 5145 Å Excitation
Authors: Hwang Dah‐Min , Chang Hua 
Published: June 2015

AbstractThe 5145 Å laser line was used to excite gaseous bromine in order to observe the resonance Raman effect. In the Stokes side, strong resonance fluorescence overwhelm, therefore the resonance Raman scattering could not be detected. However, in the anti‐Stokes side, four resonance Raman peaks were observed. The corresponding transitions are Δν= −1 to −4. The resonance Raman spectrum excited by the 4880 Å laser line was also presented for comparison.
Enzymatic Synthesis of Oligopeptide. Part II. Synthesis of Bis(N‐Protected Amino Acid) Hydrazides by Papain
Authors: Chou Shan‐Ho , Wong Chi‐Huey , Chen Shui‐Tien , Wang Kung‐Tsung 
Published: June 2015

AbstractNew hydrazide derivative identified as bis‐di‐N‐acylamino acid hydrazide was synthesized from N‐acylamino acid and hydrazine under papain catalysis. The reaction was carried out at pH 5.0, 38°C in a mixture containing 0.2M Z‐X‐OH+ or Boc‐X‐OH, 2% NH2NH2·H2O, 0.8% β‐mercaptoethanol, 0.1.% EDTA and 50 mg/ml of papain. The bis‐hydrazide can be used in peptide synthesis via oxidation.
Liquid Chromatography of Aspirin, Salicylic Acid and Acetic Acid on Cation Exchange Resin
Authors: Hsu Tong‐Jung , Liao Chi‐Chow , Chen Mei‐Yun 
Published: June 2015

AbstractA 8% cross‐linked sulfonated polystyrene cation exchanger in the hydrogen or sodium form was used as stationary phase for the chromatography of aspirin, salicylic acid and acetic acid. The eluent is 0.02 M mineral acids or their sodium salts in aqueous ethanol. Phosphoric acid, nitric acid or sulfuric acid added in aqueous ethanol eluent made successful separation of aspirin, salicylic acid and acetic acid on hydrogen form cation exchanger.
Constituents of Panacis Japonici Rhizoma. VI The Structure of Chikusetsu‐Saponin II, IVC
Authors: Lin Tzong‐Dann , Shoji Junzo 
Published: June 2015

AbstractChikusetsusaponin II and IVc, the minorsaponins of Panacis japonici rhizoma (rhizome of Panax japonicum C.A. MEYER) have been isolated. The structure of these saponins were established as being oleanolic acid‐(3)‐[β‐D‐glucopyranosyl (1→6)]‐β‐D‐glucuronopyranoside and 20S‐protopanaxatriol‐6‐(O‐α‐L‐rhamnopyranosyl (1→2)‐β‐D‐glucopyranoside]‐20‐O‐β‐D‐glucopyranoside.Chikusetsusaponin II is a new structure, while chikusetsusaponin IVc is identical with ginsenoside‐Re, isolated from P. ginseng C. A. MEYER.
Transferability of Electronic Interaction Energies Between Localized Orbitals
Authors: Shei Tsung‐Ching , Pan Kee‐Chuan 
Published: June 2015

AbstractLocalized molecular orbitals have been shown to be transferable among structurally‐related molecules. We further show that the electronic energies between localized orbitals are transferable and their magnitude can be estimated. A set of parameters of group interaction energies are established from the analysis of small molecules. Use of these parameters is demonstrated successfully for large molecules.
The Synthesis of 12‐Methyl‐1, 2, 3, 4, 6, 7, 12, 12B‐Octahydroindolo [2,3‐A]Quinolizine (1), 1‐Benzoyl‐1, 2, 3, 4, 6, 7, 12, 12B‐Octahydroindolo[2, 3‐A]Quinolizine (2), and 1‐Phenylcarbinol‐1, 2, 3, 4, 6, 7, 12, 12B‐Octahydroindolo[2, 3‐A]Quinolizine (3)
Authors: Hwang Der‐Yan , Chen Sing‐Sweng , Gu Jen‐Tau 
Published: June 2015

Abstract12‐Methyl‐l, 2, 3, 4, 6, 7, 12, 12b‐octahydroindolo[2, 3‐a]quinolizine (1) is synthesized through a new route developed in our laboratory. The most important step in this synthesis is the condensation of I‐methyltryptophyl bromide (4) with 2‐piperidone (5) to give N ‐(2‐(1‐methylidol)‐3‐ylethyl)‐2‐piperidone (6) in good yield (70%). The synthesis of 1‐benzoyl‐1, 2, 3, 4, 6, 7, 12, 12b‐octahydroindolo(2, 3‐a]quinolizine (2) and 1‐phenylcarbinol‐1, 2, 3, 4, 6, 7, 12, 12b‐octahydroindolo[2, 3‐a]quinolizine (3) follow the method developed by Wenkert. But the yield of tetrahydropyridine 9 from partial hydrogenation of pyridinum bromide 8 with 10% palladium‐charcoal is 84% which is much higher than the best yield (40%) in the literature, since the phenyl group contribute additional stability.
Mössbauer Studies on Spin Crossover in Schiff Bases Complexes of Iron (III)
Authors: Wei Ho‐Hsiang , Li Ting‐Kaung 
Published: June 2015

AbstractThe Mössbauer spectra of the imidazole adducts of tetradentate Schiff bases complexes of Iron (III), (FeLIm2)+ have been measured. Based on the Mössbauer spectra and magnetic moments, the spin‐equilibrium of Low‐spin ⇌ high‐spin for [Fe(bzacen)(lm)2)B(ph)4 was observed.
Solvent Extraction Studies of Macrocyclic Tetramine Ligands
Authors: Luo Chuen‐Lu , Chen Chien‐Hsing , Chung Chung‐Sun 
Published: June 2015

AbstractThe distribution ratios of tet a tet b and cyclam in several solvent systems at 25°C as functions of hydrogen ion concentration were determined by spectrophotometric method. The protonation constants and the distribution constants or these macrocyclic ligands and their protonated species were obtained from the variations of the distribution ratios in the range of 5<‐log[H+]<13.
6β‐Acetoxy‐7 α‐Hydroxyroyleanone, A New Compound from Taiwania Cryptomerioides Hayata
Authors: Kuo Yueh‐Hsiung , Shih Jeng‐Shiung , Lin Yi‐Tsung , Lin Yau‐Tang 
Published: June 2015

AbstractTwo crystalline compounds from the bark of Taiwania cryptomerioides Hayata were isolated. One of them was identified as 6,7‐dehydroroyleanone and the other was shown to be a new derivative of royleanone having a structure of 6β‐acetoxy‐7α‐hydroxyroyleanone.
Mössbauer Studies of Bispyridine Adducts of Fe(II), 57Fe‐Doped Ni(II), Co(II) and 57Co‐Labelled Co(II) β‐Diketonates
Authors: Wei Ho‐Hsiang 
Published: June 2015

AbstractThe Mössbauer absorption and emission spectra of FeL2Py2, Fe‐doped (57Fe, M) (L)2Py2 and 57CoL2Py2 (where, L=acac, dbm and hfa, M=Co or Ni) are reported. It was found that the Mössbauer parameters, especially, quadrupole splittings of 57Fe in 57CoL2Py2 exception of 57Co(dbm)2PY2are quite similar to those of the corresponding (57Fe, Co)L2Py2. In addition, the Mössbauer spectra shown that the chemical states of 57Fe in the hosts of Fe(acac)2Py2, Co(acac)2Py2 and Ni(acac)2Py2 were not identical.
Two New Diterpens Phenols‐7α‐Methoxydeoxocryptojaponol and 7β‐Hydroxydeoxocryptojaponol
Authors: Kuo Yueh‐Hsiung , Lin Nan‐Horng , Lin Yau‐Tang 
Published: June 2015

AbstractSix crystalline compounds, α‐cedrol, β‐sitosterol, cryptojaponol sugiol and two new diterpene phenols were isolated from the hexane extractive of wood of Juniperus formosana Hayata. Two new phenolic derivatives of deoxocryptojaponol were established as 7α‐methoxydeoxocryptojaponol and 7β‐hydroxydeoxocryptojaponol, respectively, by chemical and physical evidence.
Complexes of Cobalt(II), Nickel(II) and Copper(II) Chloroacetates with Quinoline N‐Oxide
Authors: Kumar N. , Kachroo P. L. , Gandotra A. K. , Kant Rama 
Published: June 2015

AbstractSome 1:1 and 1:2 adducts of cobalt(II), nickel(II) and copper(II) chloroacetates with quinoline N ‐oxide have been isolated by the interaction of the appropriate metal chloroacetate with quinoline N ‐oxide (QuinNo). The complexes isolated are of 1:1 stoichiometry of formula (M(CH3‐xClxCOO)2QuinNO) (when M=Co(II), Ni(Il); X=l, 2 and 3 and when M=Cu(II), X=1 and 2) except copper(II) trichloroacetate which yields an adduct of 1:2 stoichiometry of formula[Cu(CCl3COO)2 (QuinNO)3]. The adducts isolated are soluble in common organic solvents.
Zirconium (IV), Thorium (IV) and Dioxouranium (VI) Complexes of Dibasic Tridentate Schiff Bases
Authors: Agarwal A. K. , Kumar Ravindra , Singh Nepal , Kansal B. D. 
Published: June 2015

AbstractDibasic tridentate Schiff bases obtained by the condensation of O ‐aminobenzoic acid with salicyldehyde and its 5‐chloro and 5‐bromo derivatives were synthesised and used to pracipitate Zr(IV), Th(IV) and UO2(VI) metals as complexes. The 1: 1 (metal‐ligand) stoichiometry of these complexes is shown by elemental analysis, gravimetric estimations and conductometric titrations while the structures of the complexes are proved by i.r. spectra and thermogravimetric analysis. The magnetic susceptibility measurements by Gouy method show, these complexes to be monormeic and diamagnetic. The molar conductance values in nitrobenzene indicate the nonelectrolytic behaviour of the complexes. The results show that the complexes of the type Zr(OH)3L.H2O2 Th(OH)2 L.H2O and UO2L.H2O are formed having solvent molecule in co‐ordination with metal ion.
Constraint Variational Calculations on Excited States
Authors: Chang T. C. 
Published: June 2015

AbstractThe difficulties of the SCF and MCSCF calculations on excited states have been reviewed. Three constraint variational methods are then developed which can perform the SCF and MCSCF calculations on excited states in the scheme of the generalized Brillouin theorem method. The proper constraints and the ways to incorporate the constraints into the variational calculations on excited states have been studied and the comparison with other approaches have been accessed.
Effect of Deposition Rate on the Formation of Multimeric Species of Matrix Isolated Ethanol
Authors: Lin K. C. , Tai T. L. , Tsai M.C. 
Published: June 2015

AbstractThe effect of sample deposition rate on the spectral pattern of matrix‐isolated ethanol at 10°K in the hydroxyl stretching region was examined. It is shown that the spectral pattern changes greatly with sample deposition rate and the formation of various multimeric species of ethanol molecules can be conveniently controlled by varying the deposition rate at an appropriate M/A ratio instead of varying the M/A ratio.
Copper(II) Complexes of N, N′‐Bis‐βCarbamoylethyl) Ethylenediamine in Aqueous Solution
Authors: Wei Li‐Wen , Chao Min‐Shiun , Chung Chung‐Sun 
Published: June 2015

AbstractThe interactions of the ligand N, N ‐bis‐(β‐carbamoylethyl)‐ethylenediamine (BCEN) with copper (II) in aqueous solution have been investigated by potentiometric and spectrophotometric techniques. The two protonation constants of the ligand at 25° in 0.2 M NaNO3are 105‐51and 105‐44 The quantitative equilibrium studies of the stepwise reactions which precede the formation of CuBCEN2+ and the Cu‐O to Cu‐N bond rearrangements at the two amide sites are described in detail. Electronic spectra of the copper (II) chelates formed are measured and discussed.
Repulsive Bond Order and Four Center Type Reaction: Selectivity of Polycyclic Aromatics
Authors: Chen Cheng 
Published: June 2015

AbstractIn this paper, the all bond model ZDO‐MO method(1‐2) was extend to include the π‐system of twenty six polycyclic aromatics. The calculated ionization potential in most cases were found to be in good or satisfactory agreement with experimental values.Population analysis was performed on several typical aromatic systems. Among the long range π‐bond orders, the 1,4 type repulsive bond order1) is the most important one. The reactive positions and the relative reactivity of Diets‐Alder reaction are predicted by the most negative repulsive bond order of the π‐system. The 1,2 and 1,4 π‐centers compete with each other in the ozonization reaction; the largest of them usually relates to the two most reactive positions of such reaction. The above mentioned facts support the idea of para‐conjugation suggested previously by the author3).
The Neutral Part of the Bark of Pinus Taiwanensis Hayata
Authors: Cheng Yu‐Shia , Chao Yah‐Lih 
Published: June 2015

AbstractThe neutral part of the acetone extract from the bark of Pinus taiwanensis Hayata has been Investigated and found to consist of alkanes (C14‐C33), longifolene, aliphatic esters (C42, C44, C49), aliphatic alcohols (C24, C26), 3β‐21α‐dimethoxyserrat‐14‐enc, 3β‐methoxyserrat‐14‐en‐21‐one, β‐sitosterol, 3β‐methoxyserrat‐14‐en‐21ã‐ol and 3β‐hydroxyserrat‐14‐en‐21‐one.
Mössbauer Studies of Bispyridine Adducts of Fe(II), 57Fe‐Doped Ni(II), Co(II) and 57Co‐Labelled Co(II) β‐Diketonates
Authors: Wei Ho‐Hsiang 
Published: June 2015

AbstractThe Mössbauer absorption and emission spectra of FeL2PY2 Fe‐doped (57Fe2M) (L)2Py2 and 57CoL2Py2 (where, L=acac, dbm and hfa, M=Co or Ni) are reported. It was found that the Mössbauer parameters, especially, quadrupole splittings of 57Fe in 57CoL2Py2 exception of 57Co(dbm)2Py2are quite similar to those of the corresponding (57Fe, Co)L2Py2. In addition, the Mössbauer spectra shown that the chemical states of 57Fe in the hosts of Fe(acac)2PY2, Co(acac)2Py2 and Ni(acac)2Py2 were not identical.
Synthesis of Optically Active l ‐Menthol Part II. Isolation of dl ‐Menthol from the Mixture of dl ‐Menthol Isomers
Authors: Chang Teh‐Chou 
Published: June 2015

AbstractThe mixture of dl ‐menthyl chloroacetaee isomers and the mixture of dl ‐menthyl cyanoacetate isomers were prepared by the esterification of the mixture of dl ‐menthol with chloroacetic acid and cyanoacetic acid, respectively. In these mixtures the dl ‐menthyl chloroacetate m. p. 23–24° and the dl ‐menthyl cyanoacetate m. p. 63–63.5° are crystal form, the other isomers, such as dl ‐isomenthyl cyanoacetate b.p. 136–138°/3mmHg are liquid form. The crystal form ester waa isolatded from liquid form ester by cooling crystallization, and then dl ‐menthol m. p. 32–33° was obtained by hydrolysis. The isolation effect has intimately relation to the dl ‐menthol content in raw material, the more dl ‐menthol content, the more yield and purity of crystal form ester, therefore, after hydrolysis, the obtained dl ‐menthol was excellent in purity.
Two New Diterpens Phenols‐7α‐Methoxydeoxocryptojaponol and 7β‐Hydroxydeoxocryptojaponol
Authors: Kuo Yueh‐Hsiung , Lin Nan‐Horng , Lin Yau‐Tang 
Published: June 2015

AbstractSix crystalline compounds, α‐cedrol, β‐sitosterol, cryptojaponol sugiol and two new diterpene phenols were isolated from the hexane extractive of wood of Juniperus formosana Hayata. Two new phenolic derivatives of deoxocryptojaponoi were established as 7α‐methoxydeoxocryptojaponol and 7β‐hydroxydeoxocryptojaponol, respectively, by chemical and physical evidence.
Complexes of Cobalt(II), Nickel(II) and Copper(II) Chloroacetates with Quinoline N‐Oxide
Authors: Kumar N. , Kachroo P. L. , Gandotra A. K. , Kant Rama 
Published: June 2015

AbstractSome 1:1 and 1:2 adducts of cobalt(II), nickel(II) and copper(II) chloroacetates with quinoline N ‐oxide have been isolated by the interaction of the appropriate metal chloroacetate with quinoline N ‐oxide (QuinNo). The complexes isolated are of 1:1 stoichiometry of formula [M(CH3_xClxCOO)2QuinNO] (when M=Co(II), Ni(II); X=1,2 and 3 and when M=Cu(II), X=l and 2) except copper(II) trichloroacetate which yields an adduct of 1:2 stoichiometry of formula[Cu(CCI3COO)2(QuinNO)2]. The adducts isolated are soluble in common organic solvents.
Zirconium (IV), Thorium (IV) and Dioxouranium (VI) Complexes of Dibasic Tridentate Schiff Bases
Authors: Agarwal A. K. , Kumar Ravindra , Singh Nepal , Kansal B.D. 
Published: June 2015

AbstractDibasic tridentate Schiff bases obtained by the condensation of O ‐aminobenzoic acid with salicyldehyde and its 5‐chloro and 5‐bromo derivatives were synthesised and used to pracipitate Zr(IV), Th(IV) and UO2(VI) metals as complexes. The 1:1 (metal‐ligand) stoichiometry of these complexes is shown by elemental analysis, gravimetric estimations and conductometric titrations while the structures of the complexes are proved by i.r. spectra and thermogravimetric analysis. The magnetic susceptibility measurements by Gouy method show, these complexes to be monormeic and diamagnetic. The molar conductance values in nitrobenzene indicate the nonelectrolytic behaviour of the complexes. The results show that the complexes of the type Zr(OH)2L.H2O, Th(OH)2L.H2O and UO2L.H2O are formed having solvent molecule in co‐ordination with metal ion.
Effect of Crack Temperature on the Pyrolysis of Ethane in Shock Tubes
Authors: Lee Wei‐Min , Yeh Chuin‐Tih 
Published: June 2015

AbstractAccepting a previously proposed mechanism of ethane pyrolysis in shock tubes, experimental product distributions observed by Burcat et al. have been used, through computer simulation technique, to measure rate constants of following reactions in the temperature range 1206–1386°K.

Obtained k2values are substantially higher than the extrapolation from an Arrhenius equation reported for the same rate constant at low temperatures. Rate constant k2 is found decreasing with the system temperature at 6.3 atm of argon.
The Role of the Ratio of CIS Carbonyl Interaction Constants in the Force Constant Calculation and Vibrational Assignments for Some Ligand Substituted Metal Carbonyls
Authors: Lin K. C. 
Published: June 2015

AbstractAn empirical linear relationship between the ratio of cis interaction constants and the ratio of stretching force constants was derived and a method for determining the ratio of cis interaction constants for ligand substituted metal carbonyls was proposed. Results of the present work would enable us to assess the validity of the Cotton‐Kraihanzel approximation of k=kc and to evaluate the correctness and the reliability of Some anomalous carbonyl force constants evaluated with other methods. The reliable correlation of the ratio of stretching force constants with the ratio of interaction constants would be helpful to clarify some ambiguous vibrational assignments made previously for the carbonyl bands of metal carbonyls, or to analyze isotope spectra of carbonyl bands for other related molecules in the same series.
Chemistry of O‐Benzoquinones and Masked O‐Benzoquinones IV. Synthesis of O‐Spirodienonelactones from Unsymmetric Catechols
Authors: Chang T. H. , Chuang C. P. , Liao C. C. , Lin H. S. , Ueng Y. G. 
Published: June 2015

AbstractWe describe the syntheses of 6, 8‐di‐tert‐butyl‐, 7, 9‐di‐tert‐butyl., 6,7‐di‐n‐propyl and 8, 9‐di‐n‐propyl‐O‐spirodienonelactone from 3, 5‐di‐tert‐butylcatechol and 3, 4‐di‐n‐propylcatechol.
Anodic Deposition of Iodide Ion at Silver Electrode
Authors: Fan Fu‐Ren , Lin Zui‐Feng 
Published: June 2015

AbstractAnodic deposition of iodide ion on silver at 25° in aqueous (0.5 M KNO3) and in 90% (w/w) ethanol‐water (0.05 M KClO4) solutions was studied galvanostatically. The exchange current density, transfer coefficient and the rate constants for the electrode reaction were evaluated. The experimental results revealed that the overall electrode reaction and the charge‐transfer step was the same one, i.e., , which might be assumed highly reversible as reflected by the exchange current density (i) and transfer coefficient (α). The numerical values of the rate constants, and at 25° were, in aqueous solution, 1.02×10−5 and 2.88×10−6, and in ethanol solution, 2.88×10−5 and 6.3×10−6 cm sec−1, respectively.
The Photochemistry of Diazomethane‐Hydrogen Sulfide Mixtures. The Decomposition Rate of Chemically Activated Methanethiol
Authors: Whang C. W. , Kao H.L. , Ho Shih Yeng 
Published: June 2015

AbstractThe photochemistry of diazomethane in presence of hydrogen sulfide gas has been studied at 4358 and 3660‐Å. Singlet methylene radicals react with hydrogen sulfide to from methanethiol which decomposes at lower pressures. The measured decomposition rate constants are 5.5×1010 and 9.6×1010 s−1 in 4358 and 3660‐Å systems, respectively. Singlet methylene inserts into a S‐H bond as 200 times fast as into a C‐H bond.
Foam Separation of Cadmium From Waste Water
Authors: Wu Liean‐Fang , Kuo Rui‐Chin , Huang Shang‐Da 
Published: June 2015

AbstractFoam separation techniques are evaluated to determine if they would be feasible for removing cadmium (II) from waste water. Variables such as pH, ionic strength, collector concentration, and interfering ions were studied to determine their effects on separation. Sodium laury sulfate, sodium sterate, and hexadecyltrimethyl‐ammonium bromide were chosen as the collector; Fe(OH)3 and Al(OH)3 were used as the adsorbing colloid, and sodium tripolyphosphate was used as modifier. It was found that cadmium could be effectively removed using various foam separation techniques. Cadmium levels were reduced from 5 ppm to 0.003 ppm in 60 minutes foaming with sodium laury sulfate. Foam separation of cadmium sterate with hexadecyltrimethyl‐ammonium bromide was effective even at very high ionic strength, such as 1.0M NaNO3.
Autooxidation of 8S‐Hydroxycedran‐13‐Al
Authors: Kuo Yueh‐Hsiung 
Published: June 2015

Abstract8S‐Hydroxycedran‐13‐al, subjected to autooxidation in three different solvents, gave eight products, from which the transformation of cedrane skeleton to acorane and decahydroazulene skeltons was observed.
Determination of Oxygen to Uranium Ratio in Uranium Dioxide Nuclear Fuel by Differential Pulse Polarography
Authors: Cheng Chin‐Tsai , Ou‐Yang Chen‐Chun , Hsu Nian‐Nan , Wu Shaw‐Chii 
Published: June 2015

AbstractA differential pulse polarographic method for determination of oxygen to uranium ratio in uranium oxides is fully described. An accuracy −2.62% to +4.35% was achieved by calibrating the method against standard U3O3, replicate test runs with UO2, gave a precision of ±4.59% or better. The method is now successfully used in routine analysis for UO2 fuel.
Kinetic Studies of Catalyzed Chromic Acid Oxidation of Propionaldehyde by Picolinic Acid
Authors: Lin Tzuen‐Yeuan 
Published: June 2015

AbstractThe chromic acid oxidation of propionaldehyde in the presence of picoIinic acid proceeds much faster than that of propionaldehyde alone. It is shown that picolinic acid is an effective catalyst. The rate law governing this catalysis is rate=k[HCrO4−][PA]‐[CH3CH2CHO][H+]2/(a+b[H+]+c[H+]2). A mechanism consistent with the rate law was proposed: picolinic acid reacts with chromic acid to form a cyclic intermediate complex C1, C1 further reacts with a molecule of hydrated aldehyde to give a termolecular complex C2 and a hydrogen ion, C2 then undergoes oxidative decomposition in the next step to give products.
Synthesis and Mössbauer Spectroscopy Studies on the Spin States of tris(2‐Pyridylimine) Iron(ii) Complexes
Authors: Wei Ho‐Hsiang , Hsiao Ching‐Sung 
Published: June 2015

AbstractSome new tris(2‐pyridylimine) complexes of iron(II) such as FeL3X2 (L = substituted imine ligand, 2‐py‐CR1=NR2, where R1 or R2=H, CH3(Me) and C4H5(Ph), X=ClO4− or NCS−, have been synthesized and their electronic structures in the solid state examined by magnetic measurement and 57Fe Mössbauer spectroscopic studies. All the perchlorate complexes FeL3(ClO4)2 are low‐spin electronic ground state of Fe(II). The dithiocyanato‐complexes, FeL3(NCS)2; the spin states of Fe(II) are dependent on substituent R1 and R2. The two complexes Fe(2‐py‐CH=NH)3(NCS)2 and Fe(2‐py‐CPh=NH)3(NCS)2 are spin‐intermediate (S=1) and Fe(2‐py‐CH=NPh)3(NCS)2 shows a thermally inducing spin transition of 5T⇄1A1, whereas the other derivatives remain a low‐spin (S=0, 1A1) ground state of Fe(II) at three temperatures of 298, 202 and 78 K.
Studies on the Syntheses of Sydnone Derivatives and Their Properties: XVI. Syntheses of 4‐Sydnonyl Tosylates by Anodic Tosylation
Authors: Tien Hsien‐Ju , Nonaka Tsutomu , Yeh Mou‐Yong 
Published: June 2015

AbstractAs the first synthesis of sydnone derivatives having a carbon‐oxygen bond at the 4‐position of sydnone ring, 4‐sydnonyl tosylate were successfully prepared by anodic substitution reaction.