bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis of Biphenyloferrocenophanes
Authors: Shimizu Iwao , Kamei Yoshio , Tezuka Takeshi , Izumi Taeko , Kasahara Akira 
Published: July 2006

Abstract
Some ferrocenophanes, in which the two cyclopentadienyl rings are linked by biphenyl rings, have been synthesized via intramolecular reductive coupling of the corresponding formyl compounds with a low-valent titanium reagent. The structures of these cyclophane compounds were determined by IR, NMR, and UV spectra analyses. Transannular π-electronic interactions between the two biphenyl rings were examined on the basis of electronic spectra.
The Physicochemical Properties of Aqueous Solutions of Sodium Alkanesulfonates. Apparent Molar Volumes, Viscosity B Coefficients, Heats of Solution, and Surface Tensions
Authors: Tamaki Kunio , Ohara Y\={o}ko , Inabe Masahiro , Mori Tetsushi , Numata Fumio 
Published: July 2006

Abstract
The apparent molar volumes, viscosity B coefficients, heats of solution, and surface activity of sodium alkanesulfonates (RSO3Na, methyl to hexyl) in water were measured. The limiting apparent molar volumes at 25 °C increase with the number of carbon atoms in the alkyl chain; the increment per methylene group is about 16 cm3mol−1. The viscosity B coefficients of MeSO3Na and EtSO3Na increase with the temperature, while those of n-BuSO3Na decrease with an increase in the temperature. The changes in heat capacity for dissolution in water, ΔCpo, as calculated from the heats of solution at 15, 25, and 35 °C, were negative for MeSO3Na and EtSO3Na, while the ΔCpo values for n-PrSO3Na and higher homologs were positive. MeSO3Na raises the surface tension of water, while EtSO3Na and higher homologs reduce it. The structural changes in the solvent water upon the dissolution of sodium alkanesulfonates are discussed in comparison with those of sodium alkyl sulfates previously reported.
Spectrophotometric Determination of Palladium and Bismuth(III) with Semimethylxylenol Blue
Authors: Ueda Joichi , Kadowaki Kyoko 
Published: July 2006

Abstract
Procedures are described for the spectrophotometric determination of palladium and bismuth(III) with Semimethylxylenol Blue (SMXB). SMXB reacts with palladium and bismuth(III) to form reddish-violet 1:1 complexes. The optimum pH ranges for the color development are pH 1.0–1.7 for palladium and pH 1.0–1.4 for bismuth(III). The absorption maxima of the colored solutions lie at 565–568 nm and at 568–570 nm, respectively. Beer’s law is obeyed over the range of 0.4–3.2 μg cm−3 of palladium and 0.4–4.0 μg cm−3 of bismuth(III), and the sensitivities of the determinations are 4.0×10−3 μg Pd cm−2 and 6.1×103 μg Bi cm−2 for 0.001 of absorbance. For the palladium determination, gallium, tin(IV), bismuth(III), scandium, zirconium, and iron(III) interfere, but tin(IV), scandium, zirconium, and iron(III) can be masked by the addition of fluoride. For the bismuth(III) determination, gallium, tin(IV), scandium, zirconium, and iron(III) interfere, but the effect of iron(III) is eliminated by the addition of l-ascorbic acid, and tin(IV) and scandium can be masked by fluoride. A consecutive determination of palladium and bismuth(III) by the difference of the rates of color developments for their complexes was also studied.
Partial Molal Volumes and Volume Changes for Complex Formation of [M(phen)3]Cl2 in Aqueous Solutions
Authors: Yoshitani Kouzou , Yamamoto Manabu , Yamamoto Yuroku 
Published: July 2006

Abstract
The partial molal volumes, \barV°, of [M(phen)3]Cl2 (M=Fe(II), Co(II), Ni(II), Cu(II), and Zn(II)) and 1,10-phenanthroline were determined from density measurements at 25 °C. From the values for \barV° of [M(phen)3]2+, M2+ and phen the volume changes for complex formation of [M(phen)3]2+, Δ\barV°, were caluculated. Values for \barV° of [M(phen)3]Cl2 varied from 445.1 cm3 mol−1 for [Fe(phen)3]Cl2 to 458.1 cm3 mol−1 for [Zn(phen)3]Cl2 and were in the order, [Fe(phen)3]2+&lt;[Co(phen)3]2+&gt;[Ni(phen)3]2+&lt;[Cu(phen)3]2+&lt;[Zn(phen)3]2+. The Δ\barV° of [Fe(phen)3]2+ was significantly small, 4.7 cm3 mol−1. While those of other metal chelate ions were similar values, ca. 20 cm3 mol−1. The smaller Δ\barV° of [Fe(phen)3]2+ is considered to be due to the spin change from the high-spin aqua ion, [Fe(OH2)6]2+, to the low-spin complex ion, [Fe(phen)3]2+.
Kinetics and Mechanisms of Anation and Exchange Reactions in Pentakis(N,N-dimethylformamide)dioxouranium(VI) Ion in Nonaqueous Media
Authors: Doine Hideo , Ikeda Yasuhisa , Tomiyasu Hiroshi , Fukutomi Hiroshi 
Published: July 2006

Abstract
The exchange reaction of N,N-dimethylformamide (dmf) in [UO2 (dmf)5]2+ ion and the anation reactions by SCN− and N3− have been studied by the NMR method in CD2Cl2 and the stopped-flow method in DMF, respectively. For the dmf exchange reaction, rate=(kd+kIKos[DMF])[UO2(dmf)52+]/(1+Kos[DMF]), where kd, kI, and Kos are (1.30±0.21)×102 s−1, (2.94±0.07)×103 s−1, and 1.59±0.11 mol−1 kg at −50 °C, respectively. For the anation reactions by SCN− and N3−, the pseudo-first-order rate constant (kobsd) is expressed by kobsd={k−1+(k1+k−1)Kos[X]}⁄(1+Kos[X]) (X=SCN− and [UO2(dmf)5]2+ for the anation reactions by SCN− and N3−, respectively). The values of k1, k−1, and Kos at 25 °C are 1.95×102 s−1, 4.27×102 s−1, 1.48×102 M−1 (1 M=1 mol dm−3), and 1.64×103 s−1, 3.72×102 s−1, 1.80×102 M−1 for SCN− and N3−, anation reactions, respectively. These results suggest that the substitution reaction in [UO2(dmf)5]2+ ion proceeds through the associative interchange mechanism. The difference of reactivities for SCN− and N3− toward [UO2(dmf)5]2+ ion seems to be related to the pKa values for acids, HSCN and HN3.
Preparation and Spectroscopic Studies of (Diethylenetriamine)cobalt(III) Complexes with l-Penicillaminate or Its Derivative
Authors: Wakayama Katsuhiko , Okamoto Ken-ichi , Einaga Hisahiko , Hidaka Jinsai 
Published: July 2006

Abstract
The (diethylenetriamine)(l-penicillaminato)cobalt(III) complex, [Co(l-pen)(dien)]+, was chromatographically separated into three isomers, trans(NiN), trans(NiO) and trans(NiS). Each of these gave a corresponding isomer of the (diethylenetriamine)(S-methyl-l-penicillaminato)cobalt(III) complex, [Co(l-smp)(dien)]2+, by the reaction with dimethyl sulfate. The (triammine)(S-methyl-l-penicillaminato)cobalt(III) complex was also derived from the corresponding l-pen complex, [Co(l-pen)(NH3)3]+. The absorption and CD spectra of the l-pen complexes were compared with those of the l-smp ones to specify the geometrical configurations. The l-pen complexes exhibited characteristic absorption behavior and CD spectra in the region of (14–30)×103 cm−1.
Aryliminodimagnesium Reagents. IV. The Independent Preparation of Unsymmetrically Substituted Azoxyarene Isomers and Their Deoxygenation
Authors: Okubo Masao , Koga K\={o}ji 
Published: July 2006

Abstract
By use of the condensation reaction of aryliminodimagnesium reagents (ArN(MgBr)2) with nitroarenes, six symmetrical and eight unsymmetrical azoxyarenes including four pairs of isomers were prepared in 40–80% yields. The deoxygenation reaction of the azoxyarenes by treating with five molar equivalents of p-MeOC6H4N(MgBr)2 at 55 °C in tetrahydrofuran was also studied, and the reactivity of deoxygenation was correlated to the shift of the electronic absorption maximum of azoxyarene.
Further Polarographic Studies on the Condensation Products of Dehydro-l-ascorbic Acid with o-Phenylenediamine in Acetate Buffer, pH 3.6
Authors: Ohmori Mitsuaki , Tsujimoto Yuji , Takagi Masanosuke 
Published: July 2006

Abstract
Three polarographic reduction waves, which appear when dehydro-l-ascorbic acid (DAA) is treated with o-phenylenediamine (OPD) in acetate buffer, pH 3.6, were renivestigated by comparing with those of the synthesized products from DAA and OPD. A reaction scheme of DAA with OPD is presented and the characteristics of the reactions are discussed.
Synthetic Study on Peptide Antibiotic Nisin. I. The Synthesis of Ring A
Authors: Wakamiya Tateaki , Shimbo Kuniaki , Sano Akihiko , Fukase Koichi , Shiba Tetsuo 
Published: July 2006

Abstract
Synthesis of the ring A, a cyclic sulfide peptide part containing dehydroalanine residue, in peptide antibiotic nisin was successfully achieved by applications of two novel procedures. First, a sulfide ring was derived from a cyclic disulfide peptide by desulfurization with P(Et2N)3. Secondly, for the preparation of dehydroalanyl residue, a simple and convenient method through Hofmann degradation of 2,3-diaminopropionyl residue was newly exploited in the presence of sulfide linkage.
The Copper-catalyzed Autoxidation of Cysteine.The Amount of Hydrogen Peroxide Produced under Various Conditions and the Stoichiometry of the Reaction
Authors: Hanaki Akira , Kamide Hiroko 
Published: July 2006

Abstract
Hydrogen peroxide is shown to be produced as an intermediate from oxygen in the copper-catalyzed autoxidation of cysteine. The amounts of cysteine oxidized and of hydrogen peroxide formed varied depending on the reaction conditions employed. The perpxide upon forming was spontaneously utilized for the oxidation of cysteine. As a result, the ratio of the concentration of hydrogen peroxide formed to cysteine oxidized is variable depending on the conditions. But, in dilute solutions, where the oxidation by the peroxide was slow, a stiochiometric relation of 2:1 was obtained between cysteine consumed and hydrogen peroxide produced. The rate of autoxidation is dependent on the concentration of oxygen dissolved. The double reciprocal plot of the rate against the concentration of oxygen gives a straight line, which indicates a possibility of the Michaelis-Menten type mechanism concerning the reoxidation or oxygenation of Cu(I) species.
Lead Tetraacetate Oxidation of Humulene and Conformational Analysis of the Produced Humulatrienediols
Authors: Shirahama Haruhisa , Hayano Kiyoharu , Arora Gurdial Singh , Osawa Eiji , Matsumoto Takeshi 
Published: July 2006

Abstract
Humulene was oxidized by lead tetraacetate in benzene to give 2,5,9-humulatrien-7-ol acetate and 1,5,9-humulatriene-3,7-diol diacetates. Conformational analysis of 1,5,9-humulatriene-3,7-diols was performed by NMR spectroscopy and molecular mechanics calculations.
Temperature Dependence of Absorption Spectra of Chlorophyll a in Hydrocarbons over the Temperature Range 300–77 K. Enthalpy and Entropy Changes for the Formation of Dimeric Chlorophyll a
Authors: Hoshino Mikio , Ikehara Kiyoshi , Imamura Masashi , Hama Yoshimasa 
Published: July 2006

Abstract
The absorption spectra of chlorophyll a in isopentane, 3-methylpentane, and methylcyclohexane solutions were studied over the temperature range 300–77 K. In those hydrocarbon solutions which were prepared using methanol treatment, chlorophyll a forms hydrated dimer at low temperatures. The dimer has an absorption peak at 695 nm at 160 K, which gradually shifts to 706 nm with decreasing temperature from 160 K to 77 K. The enthalpy change (–ΔH) for the formation of the dimer was obtained to be 41.0±0.8 kJ mol−1, independent of the solvent used. The entropy changes (–ΔS) were 113±8 J K−1 mol−1 for isopentane, 118±8 J K−1 mol−1 for 3-methylpentane and 128±8 J K−1 mol−1 for methylcyclohexane solutions. Comparative studies carried out of the solutions prepared without the methanol treatment suggest the existence of two kinds of hydrated monomeric chlorophyll a.
The Adsorption of Chloromethanes on KCl. The Role of the Surface Ions as Adsorption Sites
Authors: Chikazawa Masatoshi , Amada Masatoshi , Kanazawa Takafumi 
Published: July 2006

Abstract
The adsorbed amounts of chloro-substituted methanes, such as CH2Cl2, CHCl3, and CCl4, for KCl particles were measured by a volumetric method at various temperatures, and the isosteric heats of adsorption and differential entropies of the adsorbed molecules were estimated from the adsorption isotherms. The order of magnitude of the heats of adsorption at a coverage of θ=0.5 was found to be CH2Cl2&gt;CHCl3&gt;CCl4. Moreover, a plot of the dipole moments of the three adsorbates vs. the adsorption heat values gave a straight line. Therefore, the differences among the adsorption heats of the three adsorbates is mainly caused by an orientation of their dissimilar dipoles to the surface. It may be concluded that the chloro-substituted methanes are adsorbed on surface anions of KCl powder.
The Heat Capacities of Lithium, Sodium, Potassium, Rubidium, and Caesium Nitrates in the Solid and Liquid States
Authors: Ichikawa Kazuhiko , Matsumoto Toshiyuki 
Published: July 2006

Abstract
The heat capacities, Cp, of the alkali metal nitrates, MNO3 (M= Li, Na, K, Rb, and Cs), in the solid and liquid states have been measured between 50 and 450 °C by means of adiabatic calorimetry. We have measured with a fair degree of accuracy the Cp values for the MNO3 systems, because the existing data on NaNO3 and KNO3 above 250 °C are quite scanty. Some empirical rules, some of which may extend to other salts, have been obtained from the results on Cp for the five alkali nitrates in the solid and liquid states. For the molten MNO3, the heat capacities at a constant volume, CV, were obtained from the thermodynamical relationship between CV and Cp, using the experimental values of Cp; the CV values have been interpreted in terms of the interionic and intraionic portions.
Self-diffusion and Melting in the Plastic Phases of Neopentane as Studied by NMR Relaxation at High Pressures
Authors: Takeda Sadamu , Soda Gen , Chihara Hideaki 
Published: July 2006

Abstract
Proton spin-lattice relaxation time T1 in the plastic phase of 2,2-dimethylpropane (neopentane) was measured at 10 MHz up to 170 MPa between 192.7 and 308.2 K. T1 near the melting point is determined by self-diffusion. The enthalpy and volume of activation of this motion suggest that self-diffusion occurs through a single vacancy mechanism. The correlation time of self-diffusion at the melting point (Tf) is (3.2±0.5)×10−7 s irrespective of external pressure. The diffusion rate is a function only of Tf⁄T, i.e. the law of corresponding states holds. The feature of activation properties of self-diffusion is strongly correlated with the melting phenomenon. The melting curve of the phase diagram was also determined and a possibility of existence of another plastic phase was found above 40 MPa.
Synthesis and Characterization of Imidazolate-bridged Copper(II) Complexes of Triangular Skeleton
Authors: Okawa Hisashi , Mikuriya Masahiro , Kida Sigeo 
Published: July 2006

Abstract
New polynuclear copper(II) complexes of the composition [CuL(im)]X (L=N,N,N′,N′-tetramethylethylenediamine (tmen), bip, phen; X=ClO4, PF6, BF4; im= imidazolate ion) have been prepared. Cryomagnetic measurements have indicated that the complexes involve a trianglar-trinuclear skeleton and an antiferromagnetic spin-exchange interaction operates between copper(II) ions; exchange integrals being evaluated at −37–−45 cm−1.Based on the Dreiding model consideration of the complexes and the crystal structure of [Cu(tmen)(imH)2](ClO4)2, a trinuclear structure of the triangular skeleton with imidazolate bridges, (Remark: Graphics omitted.), was supposed for the complexes.
Rapid Diffusion of Oxygen Ions in Indium Oxide during Reduction-oxidation
Authors: Otsuka Kiyoshi , Yasui Takao , Morikawa Akira 
Published: July 2006

Abstract
Rapid diffusion of oxygen ions in indium oxide particles has been suggested by measuring the distribution of 18O ions after oxidation of reduced-indium oxide by 18O2 (gas). This result explains the observation that the reduced-indium oxide is one of the most efficient compounds among the reduced metal oxides for reduction of H2O, CO2, or NO.
Macroscopic and Microscopic Behavior of the Eluent in Liquid Chromatography
Authors: Fukuhara Ken-ichi , Nakamura Asao , Tsuboi Masamichi 
Published: July 2006

Abstract
By injecting an isotope pulse into the eluent of liquid chromatography, it has been shown that the eluent flow does not go into the stationary phase, while each of the molecules in the eluent is replaced by an equivalent molecule originally contained in the stationary phase. Meanwhile, an appropriate method for determining the t0 value is given.
Nitration of Aromatic Heterocycles with Palladium(II) Acetate and Sodium Nitrite
Authors: Itahara Toshio , Ebihara Reiko , Kawasaki Kazukuni 
Published: July 2006

Abstract
Treatments of 1,3-dimethyluracil, 1-methyl-2-pyridone, and thiophene with palladium(II) acetate and sodium nitrite gave the corresponding nitro-substituted products.
Reinvestigation of the Synthetic Reaction of Dimethylamino-1,3-indandione
Authors: Ito Masaaki , Abe Kazuo , Sasaki Teruji , Misono Kenzo 
Published: July 2006

Abstract
One step preparation of dimethylamino-1,3-indandione (1) from salicylaldehyde with glycine betaine was reinvestigated. Reaction conditions to give the best yield of 1, characterization of a minor product (2-acetoxybenzylidene diacetate), and reaction pathway were described.
A Convenient Synthesis of C(2)-Substituted Cephalosporins
Authors: Torii Sigeru , Tanaka Hideo , Saitoh Norio , Siroi Takashi , Sasaoka Michio , Tada Nobuhito , Nokami Junzo 
Published: July 2006

Abstract
Replacement of the C(2)-substituents of 2-acetoxy- or 2-methoxycephalosporin with nucleophiles was performed efficiently in dichloromethane in the presence of acid-catalysts, affording cephalosporins bearing heteroaromatic moieties, sulfenyl, and alkoxyl groups at the C(2)-position.
Branched-chain Sugars. XXXIV. Synthesis of Methyl Dihydroeurekanate
Authors: Yoshimura Juji , Hara Kazutoshi , Matsuzawa Masafumi 
Published: July 2006

Abstract
Methyl dihydroeurekanate; methyl 6-deoxy-4-C-[(S)-1-hydroxyethyl]-2,3-O-methylene-d-galactonate was synthesized from benzyl 6-deoxy-4-C-[(S)-1-hydroxyethyl]-2,3-O-methylene-d-galactopyranoside.
Lattice Dynamical Analysis of MgO
Authors: Kida Akiko , Miura Mitiko , Murata Hiromu 
Published: July 2006

Abstract
The lattice dynamical properties of MgO are studied using a model based on the Birman method, which is different from the conventional point-like atom model. The model includes three kinds of forces: the short-range, the long-range Coulomb, and the long-range polarization interactions. The long-range interactions are dependent on the magnitude of the expansion of the electron distribution. The degrees of the expansion for Mg and O (wMg and wO) are estimated from the X-ray data. The calculated phonon dispersion curves agree with the observed curves in the case of wMg=0.35 Å and wO=0.73 Å, which are nearly equal to the estimated values, 0.35 and 0.65 Å.
The Ultraviolet Photoelectron Spectroscopy of Aliphatic Hydrocarbons and Tetramethylsilane in the Solid State
Authors: Seki Kazuhiko , Inokuchi Hiroo 
Published: July 2006

Abstract
He I, Ne I, and Ar I ultraviolet photoelectron spectra were measured for solid hexane, 3-methylpentane, 2,2-dimethylbutane, neopentane, tetramethylsilane, cyclohexane, and 1-hexene deposited on a substrate at the temperature of liquid nitrogen. The spectra of all the compounds except hexane showed valence-band features. The threshold ionization potential was 7.6–8.9 eV, with a lowering of the threshold from the gas to the solid phase (polarization energy PS) of 1.2–1.8 eV. These PS values are in reasonable agreement with theoretical model calculations. To clarify the effect of intra- and intermolecular factors on PS, the observed PS values were compared with those of liquid-phase and solid-aromatic hydrocarbons. For compounds in which the bottom of the conduction band lies above the vacuum level, the polarization energy data showed that electrons with energies between these states are also emitted, possibly without any excitation of electrons to the conduction band in the bulk of the solid.
Ozonization of Organic Compounds. VII. Carboxylic Acids, Alcohols, and Carbonyl Compounds
Authors: Niki Etsuo , Yamamoto Yorihiro , Saito Tsuneo , Nagano Keiji , Yokoi Seiichi , Kamiya Yoshio 
Published: July 2006

Abstract
The rate and products of the ozonization of carboxylic acids, alcohols, and ketones have been studied in water at 30 °C. The ozonization of alcohols gave corresponding carbonyl compounds as major product. The ozonization of ketones brought about primarily the carbon-carbon bond cleavage and gave carboxylic acids. Saturated carboxylic acids such as acetic acid, propionic acid, and isobutyric acid were ozonized only slowly in neutral water, but they were ozonized faster in alkaline aqueous solution. On the other hand, α-hydroxy carboxylic acids such as glycolic acid and lactic acid were ozonized even in pure water. The mechanism of ozonization of these compounds and the effect of pH are discussed.
Crystal Structure of Adenine-1-(2-Carboxyethyl)uracil (1 : 1) Complex. A Model for Interactions of Amino Acid Side Chains with Nucleic Acid Base Pair
Authors: Fujita Shigeo , Takenaka Akio , Sasada Yoshio 
Published: July 2006

Abstract
As a model for protein-nucleic acid interactions, crystals of the title complex were prepared from a water–ethanol (1 : 1) solution containing equimolar amounts of adenine and 1-(2-carboxyethyl)uracil. The space group is P21/c with the unit cell dimensions of a=12.567(1), b=13.358(1), c=8.032(1) Å and β=93.28(1)°. The crystal structure was determined by X-ray analysis. The final R value was 0.053. The adenine and uracil moieties form a reversed Hoogsteen base pair in which N(7) and N(6) of adenine are hydrogen-bonded with N(3) and O(2) of uracil, respectively. The carboxyl group is dissociated and hydrogen-bonded to the protonated N(1) of adenine in the adjacent base pair at a distance of 2.542(3) Å. It is suggested that the protonation of adenine–uracil reversed Hoogsteen base pair could occur to make the base pair more stable, and the dissociated carboxyl group may be hydrogen-bonded to it in the protein–nucleic acid interactions.
Pressure-Volume-Temperature Relations and Isotropic-nematic Phase Transitions for 4-(trans-4-Pentylcyclohexyl)benzonitrile
Authors: Ichimura Hajime , Shirakawa Toshiaki , Tokuda Taneki , Seimiya Tsutomu 
Published: July 2006

Abstract
Pressure-volume isotherms of 4-(trans-4-pentylcyclohexyl)benzonitrile were directly measured by means of piston-cylinder method at various temperatures. From the relation of the molar volume and the transition temperature which was determined by its clearing point, the parameter ∂lnTc⁄∂lnVc, was found to assume a value of −5.24, which should be closely related with the intermolecular potential energy. The value of this parameter increased correlatively with the alkyl chain length in the homologous series of 4-(trans-4-alkylcyclohexyl)benzonitriles.
Syntheses, Structure, and Properties of Several Bis{(alkylthio)acetato}copper(II)–Amine Adducts
Authors: Ouchi Akira , Sato Yoshiyuki , Yukawa Yasuhiko , Takeuchi Toshio 
Published: July 2006

Abstract
The crystal and molecular structure of tetrakis{(isopropylthio)acetato}bis(quinoline)dicopper(II) (1), bis(dibenzylamine)bis{(ethylthio)acetato}copper(II) (2), and bis{(isopropylthio)acetato}tris(isoquinoline)copper(II) (3) were determined by the X-ray diffraction method. The final R values obtained are 0.041, 0.055, and 0.078 for 1, 2, and 3 respectively. 1 is green in color and is orthorhombic with the space group Pcab. It has a dimer structure similar to that of the copper(II) acetate hydrate, where four (alkylthio)acetate liagnds bridge both copper(II) atoms. 2 is violet in color and is monoclinic with the space group A2/a. It has a square-palnar geometry, and no atoms are coordinated to the copper(II) atom from the axial direction, probably because of the steric effect of the large dibenzylamine molecules. 3 is blue in color and is triclinic with the space group P\bar1. It has potentially a hepta-coordinate geometry, where one nitrogen atom and two oxygen atoms ligate from the axial direction of the CuN2O2 plane.