bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optical Resolution of Cyclo-palladated (Dimethylaminomethyl)ferrocene
Authors: Komatsu Takao , Nonoyama Matsuo , Fujita Junnosuke 
Published: July 2006

Abstract
Cyclo-palladated (dimethylaminomethyl)ferrocene has been resolved into optically pure enantiomers via the (S)-proline derivatives. The absolute configuration is assumed by comparing the circular dichroism spectrum with that of similarly cyclo-palladated (S)-[1-(dimethylamino)ethyl]ferrocene of the known configuration. Several optically active derivatives of the cyclo-palladated (dimethylaminomethyl)ferrocene have been prepared and characterized.
Enthalpies of Fusion of Intermediate Compounds, KMgCl3, K2MgCl4, K2BaCl4, KCaCl3, K2SrCl4, K2LaCl5, K3PrCl6, K3NdCl6, KGd3Cl10, and KDy3Cl10
Authors: Hattori Takeo , Igarashi Kazuo , Mochinaga Junichi 
Published: July 2006

Abstract
The enthalpies of fusion were measured on the intermediate compounds of the binary systems of KCl and some other chlorides. These were compared with the values calculated using Cp of the component salts according to the additivity. The enthalpies of fusion measured were in good agreement with calculated in K2LaCl5 and K2BaCl4.
Synthesis of 7-Halo-6H-benz[cd]azulen-6-ones
Authors: Kuroda Shigeyasu , Sugimori Masaru , Kawahigashi Shinya , Matuzaki Nobuo , Nishiyama Toshihiro , Hirooka Syuzi 
Published: July 2006

Abstract
7-Bromo-6H-benz[cd]azulen-6-one, 7-Chloro-6H-benz[cd]azulen-6-one and its derivative were prepared in four steps starting from tetrahydroacenaphthene. Formation of the corresponding cations in strong acid is suggested on the basis of 1H NMR and UV spectra.
Preparation and Absorption and Circular Dichroism Spectra of Cobalt(III) Complexes with N,N,N′,N′-Tetrakis(2-aminoethyl)-1,2-ethanediamine, -1,3-propanediamine, -1,4-butanediamine, and -(R,R)-and -(R,S)- 2,4-pentanediamine
Authors: Hata Kazumasa , Doh Myung-Ki , Kashiwabara Kazuo , Fujita Junnosuke 
Published: July 2006

Abstract
Cobalt(III) complexes of new sexidentate ligands,N,N,N′,N′-tetrakis(2-aminoethyl)-1,3-propanediamine (ttn), -1,4-butanediamine (ttmd), and -(R,R)- and -(R,S)-2,4-pentanediamine (tptn) were prepared and resolved except the RR-tptn complex which formed the Δ-isomer stereoselectively. The monocyano complexes of N,N,N′,N′-tetrakis(2-aminoethyl)-1,2-ethanediamine (ten) and ttn, in which the ligands act as a quinquidentate, were also prepared. Absorption and CD spectra of these complexes and the known [Co(ten)]3+ complex were compared with one another. The first d-d absorption bands of the sexidentate complexes, [Co(A)]3+ are shifted to smaller wave numbers in the order, ttn&gt;ten&gt;ttmd for A, but those of [Co(CN)(HA)]3+ are in the reverse order, ten&gt;ttn. The d-d absorption bands of [Co(RS-tptn)]3+ which contains one axial methyl group show the remarkable red shift and the hyperchromic effect as compared with those of [Co(RR-tptn)]3+ with two equatorial methyl groups.
Light Scattering Study of the 12-Hydroxyoctadecanoic Acid and Benzene Mixture in the Gel State
Authors: Ito Nobuyuki , Yudasaka Masako , Fujiyama Tsunetake 
Published: July 2006

Abstract
The structure of the 12-hydroxyoctadecanoic acid-benzene gel was studied by the use of the light scattering spectrometer. The scattering angular dependence of the scattering intensity and the time correlation function of the electric field were measured. It was found that the coarse mesh network and the fine mesh network coexist in this gel. The former was detected by the intensity measurement, while the latter was detected by intensity-fluctuation spectroscopy. The usefulness of the light scattering technique was emphasized.
The Rapid Determination of Sulfide, Thiosulfate, and Polysulfide in the Lixiviation Water of Blast-furnace Slag by Means of Argentimetric Potentiometric Titration
Authors: Satake Hiromu , Hisano Takeo , Ikeda Sanae 
Published: July 2006

Abstract
Sulfide, thiosulfate, and polysulfide ions in their mixtures were determined potentiometrically with a silvernitrate standard solution. These three species can be precisely determined from two titrations for each sample with the coefficient of variation of 0.3% at the concentration level of 5×10−4 M (1 M= 1 mol dm−3). One aliquot is titrated, after making the titrand acidic with an acetate buffer (pH=4), to get the end points of the sulfide and thiosulfate ions respectively, in the presence of free sulfur. The other is titrated, after the sulfitolysis of the sample solution, to show the end points of the sulfide and thiosulfate (the original thiosulfate plus the thiosulfate which is formed from polysulfide) ions in the presence of excess sulfite. The addition of calcium nitrate is effective in making the end points clear and accurate. This method was applied to determine these species in lixiviation water of blast-furnace slag.
Reactions of the Bis(β-diketonato)palladium(II) Complexes with Various Nitrogen Bases
Authors: Okeya Seichi , Sazaki Hiroyuki , Ogita Michiyo , Takemoto Takako , Onuki Yukio , Nakamura Yukio , Mohapatra B K , Kawaguchi Shinichi 
Published: July 2006

Abstract
Reactions of the bis(β-diketonato)palladium(II) complexes with various nitrogen bases (L) afforded [Pd(β-dik)L2](β-dik), [PdL4](β-dik)2, or [Pd(β-dik)(β-dik-C)L] according to the natures of L and β-diketonate anions. Less basic ligands such as 1,1,1,5,5,5-hexafluoro- and 1,1,1-trifluoro-2,4-pentanedionates are readily removed by L to the outer sphere. Tendency of preferring the central-carbon-bonded state of the β-diketonate anion is related with the keto-favoring nature of its conjugate acid. Excess primary amines and pyridines can displace both of the β-diketonate ligands but secondary amines only one. These two types of compounds containing the 2,4-pentanedionate anion in the outer sphere undergo prompt deuteration of methine and amine protons by CDCl3. Tribenzylamine and 2,6-diphenylpyridine react with bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)palladium(II) to afford orthometallated products.
Photo-promoted Hypochlorite Oxidation of α-Amino Acids. Kinetics and Irradiation Effect for the Strecker Degradation
Authors: Ogata Yoshiro , Kimura Makoto , Kondo Yoshinori 
Published: July 2006

Abstract
Hypochlorite oxidation of simple α-amino acids (the Strecker degradation) in aqueous solutions has been studied in the dark and under UV-irradiation. UV-spectra, iodometry, and amino acid determination (2,4-dinitrofluorobenzene method) suggest that the intermediate N-chloro amino acid is formed quickly at an initial stage, then its slow oxidative decomposition takes place to give aldehyde, carbon dioxide, and ammonia. The mechanism is also supported by the fact that the oxidation follows the first-order rate expression; −d[RCH(NH2)CO2H]⁄dt=k[1[RCH(NHCl)CO2H]. UV-irradiation was found to promote remarkably the degradation of N-chloro amino acid. When equimolar amounts of amino acid and hypochlorite were used, the products such as unreacted amino acid, ammonia, and aldehyde were analogous to those of the dark reaction. The use of a large excess of hypochlorite under irradiation enables complete oxidative degradation of amino acid to carbon dioxide,, water, and nitrogen. Its application to waste water treatment is discussed.
Effects of Chelated and Non-chelated Transition Metal Ions on the Photoreactions of Pyridinecarboxylic Acids in Aqueous Solutions
Authors: Sugimori Akira , Takada K\={o}tar\={o} , Kimura Tsutomu , Kamimura Junji 
Published: July 2006

Abstract
Iron(III) and copper(II) chelated by 2-pyridinecarboxylate bring about the photochemical decarboxylation of the ligand via the electron transfer from carboxylate to metal ions to give pyridine and 2,2′-bipyridine (for Fe(III)) or 2-pyridinol (for Cu(II)). In the presence of iron(III), ruthenium(III), and copper(II), 3-pyridinecarboxylic acid gives photochemically 2,2′-bipyridine-3,5′-dicarboxylic acid without decarboxylation. 4-Pyridinecarboxylic acid is photo-resistant both in the presence and in the absence of iron(III) and copper(II).
Asymmetric Hydrogenation Catalyzed by the (Achiral Base)bis(dimethylglyoximato)cobalt(II)–Chiral Cocatalyst System. The Preparation of a New Type of Chiral Cocatalyst and Its Application to the Asymmetric Hydrogenation of Methyl N-(Acetylamino)acrylate and Benzil
Authors: Takeuchi Seiji , Ohgo Yoshiaki 
Published: July 2006

Abstract
As a new type of chiral cocatalyst in the achiral base-coordinated bis(dimethylglyoximato)cobalt(II)–chiral cocatalyst system, tertiary amines with an amide group at α- or β-carbon were prepared, and asymmetric hydrogenation was examined by using them. The optical yield reached 34.5% enantiomeric excess(ee) by using N-[(2S,3S)-2-acetoxy-3-dimetnylamino-3-phenylpropionyl]-(R)-α-methylbenzylamine; this is the highest value attained so far in the asymmetric hydrogenation of methyl N-(acetylamino)acrylate with this system. The enantioselectivity in the hydrogenation of methyl N-(acetylamino)acrylate was reversed with a configurational alteration of the α-methylbenzylamine moiety of N-[N,N-dimethyl-(S)-phenylalanyl]-α-methylbenzylamine, while it was not reversed in the hydrogenation of benzil by the configurational alteration. From these facts, it is deduced that the hydrogen bond between amide groups of the chiral amino carboxamides and methyl N-(acetylamino)acrylate may act as an attractive force to enhance the enantioselectivity of the asymmetric hydrogenation.
Determination of the Non-stoichiometry of Zeolite A
Authors: Ohgushi Tatsuo 
Published: July 2006

Abstract
Zeolite A was synthesized in the sodium form with the composition Na12(AlO2·SiO2)12(NaAlO2)δ·nH2O, 0≤δ≤1. A new method was developed for the determination of the δ-value of the non-stoichiometric part in the product. It consists of repeated ion exchanges of zeolite with TINO3 (or BaCl2), and determination of the residual amount of Na+ in the zeolite as a function of the number of treatments. The Kδ/δ value was determined from a linear plot, where Kδ is a selectivity coefficient of the ion exchange reaction between Tl+ (or Ba2+) and Na+ in the non-stoichiometric part. The Kδ value was taken from the observed Kδ/δ value, the δ-value being obtained by chemical analysis. The δ-value of a sample can be determined by introducing the Kδ-value into Kδ/δ. An approximate δ-value can be estimated from a break point of the curve, log(residual amount of Na+) vs. the number of times of treatment.
The Fluidity and Electrolytic Conductivity of Alkali-metal Chloride/Poly(ethylene oxide)–H2O Systems. The Effects of the Polymer Concentration and the Temperature
Authors: Isono Toshiaki , Takahashi Katsuo , Tamamushi Reita 
Published: July 2006

Abstract
The fluidities of poly(ethylene oxide) (PEO)–H2O mixtures and the electrolytic conductivities of alkali-metal chlorides in the PEO–H2O mixtures were measured at different PEO compositions and temperatures (25–50 °C). The extended Walden’s rule was found to be satisfied when the fluidity and conductivity were changed by the temperature variation at a constant composition, whereas a large deviation from Walden’s rule was observed upon the isothermal variation of the PEO composition. The Arrhenius activation parameters were determined from the temperature dependence of the fluidities and conductivities, and some correlations between pairs of parameters were examined.
4-Dimethylaminopyridine N-Oxide as an Efficient Oxidizing Agent for Alkyl Halides
Authors: Mukaiyama Shigemi , Inanaga Junji , Yamaguchi Masaru 
Published: July 2006

Abstract
Various types of alkyl halides were converted into aldehydes or ketones in high yields with 4-dimethylaminopyridine N-oxide in the presence or absence of DBU.
Alkylation of Thioureas and Related Compounds by Use of Alcohols, Diethyl Azodicarboxylate, and Triphenylphosphine
Authors: Nagasawa Hiroshi , Mitsunobu Oyo 
Published: July 2006

Abstract
The alkylation of ambident nucleophiles having a thiocarbonyl group by use of alcohols, diethyl azodicarboxylate, and triphenylphosphine was studied. Selective S-alkylation took place in the cases of N-benzoyl-N′-mono- and -disubstituted thioureas, while selective N-alkylation occurred in the reaction of N-phenyl-N′,N′-diethylthiourea. 1-Methoxymethyl-2-thiouracil afforded both N-alkylated and S-alkylated products.
Stereochemical Studies of the Hydrogenation with an Asymmetrically Modified Raney Nickel Catalyst. The Hydrogenation of Acetylacetone
Authors: Tai Akira , Ito Kazuhisa , Harada Tadao 
Published: July 2006

Abstract
The hydrogenation of acetylacetone (I) over asymmetrically modified Raney nickel (MRNi) proceeded, step by step, as follows: acetylacetone (I)\oversetStep 1→ 4-hydroxy-2-pentanone (II) \oversetStep 2→ 2,4-pentanediol (III). It was demonstrated that the optical yield of Step 1 and the diastereomer excess of Step 2 are governed by the ratio of the stereo-differentiating reaction site to the non-stereo-differentiating reaction site on the catalyst. The stereochemistry of each step was also discussed based on the mode of the intermolecular hydrogen bondings between the substrate and tartaric acid adsorbed on the catalyst. RNi modified with a mixture of tartaric acid and NaBr (TA–NaBr–MRNi) gave the best result with respect to both Step 1 and Step 2.
Synthesis of Hypacrone
Authors: Sakan Fujio , Minami Yukio , Shirahama Haruhisa , Matsumoto Takeshi 
Published: July 2006

Abstract
Hypacrone, an illudoid sesquiterpene, was synthesized from 2,2-dimethyl-4-(3,3-ethano-4,4-ethylenedioxy-1-methylsulfinyl-2-oxopentyl)-1-cyclopentanone which is a key intermediate also in the synthesis of illudins.
Molecular Structure of Trimethylphosphine–Boron Tribromide as Determined by Gas Electron Diffraction
Authors: Iijima Kinya , Koshimizu Eiichi , Shibata Shuzo 
Published: July 2006

Abstract
The molecular structure of trimethylphosphine–boron tribromide (CH3)3P·BBr3 has been determined from gas electron-diffraction and vibrational-spectroscopic data. The molecular parameters and their uncertainties were rg(B–Br)=2.010±0.009 Å, rg(P–B)=1.946±0.029 Å, rg(C–P)=1.804±0.004 Å, rg(C–H)=1.098±0.010 Å, ∠BrBBr=111.7±0.7°, and ∠CPC=108.0±0.7°. The potential barrier around the P–B bond was also estimated to be about 10 kcal mol−1 (1 cal=4.184 J).
Computer Counting of the Number of Water Molecules in the First Layer of Crystalline Water Clathrate
Authors: Tabushi Iwao , Kiyosuke Yo-ichi , Yamamura Kazuo 
Published: July 2006

Abstract
Semiempirical calculation of the number of water molecules in the first layer of water clathrates in crystalline state was developed by computer aided construction of hydrogen-bonded network of water molecules. In the generalized thermodynamic considerations on four possible types of “unit clathrate,” van der Waals stabilization energy, “strain” energy of the unit clathrate, and entropy term due to the motional freedom of the guest were taken into account for the calculation of free energy change for the formation of the water clathrate. The results of calculations on 37 hydrophobic organic molecules well represented the trend of the reported experimental data of X-ray studies. The present calculation also disclosed such a large unfavorable strain energy (8.72 kcal·mol−1) of pentakaidecahedron that it counteracts the van der Waals stabilization. The result is in a good agreement with the fact that pentakaidecahedral cavity is rarely seen in the gas hydrates. Most importantly, these semiempirical calculations of the energetics of water clathrates afforded valuable new insights into water assembly and may be extended to give better understandings of structured water in biological system and of water clusters that develop around apolar solutions in water.
Determination of the Specific Heat Capacities of Aqueous Solutions of Pentose
Authors: Kawaizumi Fumio , Kushida Shigemi , Miyahara Yutaka 
Published: July 2006

Abstract
A laboratory-constructed isoperibol twin calorimeter of dry shield type (J. Chem. Thermodyn., 13, 89 (1981)) was used for measurements of the specific heat capacities of aqueous solutions of d-xylose, d-ribose, d-, and l-arabinose at ca. 30 °C. The partial molar heat capacity at infinite dilution, Cp.2∞ was determined. Values of Cp.2∞ obtained are: d-xylose 281±2, d-ribose 271±2, d-arabinose 278±3, and l-arabinose 270±4 J K−1 mol−1. Measurements of the heat capacity of these pentoses in the solid state, Cp.2* were carried out and the parameter ΔCp.2∞≡Cp.2∞–Cp.2* was evaluated. Values of ΔCp.2∞ are smaller than the corresponding values for hexose obtained previously. Similarly as had been the case for hexose, the additivity parameters of the group contribution on Cp.2∞ of solute estimated from the data on other nonelectrolytes were not acceptable for pentose. From this point the interactions working between solute of saccharide and the solvent water are considered to have characters largely different from those of other nonelectrolyte.
Structure and Properties of Diaquabis(methylthioacetato)cobalt(II), [Co(C3H5SO2)2(H2O)2], and Its Anhydride
Authors: Ouchi Akira , Shimoi Mamoru , Takeuchi Toshio , Saito Hideo 
Published: July 2006

Abstract
The crystal and molecular structure of the title complex has been determined by the X-ray diffraction method. The crystal was triclinic, space group P\bar1, a=6.750(2), b=9.214(4), c=5.206(2) Å, α=102.57(6), β=103.44(6), γ=100.70(3)°, Z=1, DX=1.702(3), Dm=1.72(3) mg m−3, μ(Mo Kα)=1.89 mm−1, and the final R value was 0.034 for 1175 reflections. The molecular arrangement has a center of symmetry and a distorted octahedron is formed around the central cobalt(II) atom; each methylthioacetato ligand forms a chelate ring by coordinating through a sulfur atom and a carbonyl oxygen atom, and two water molecules also coordinate to the central metal. Its amorphous anhydride as well as the other type anhydride, which resembles the bis(propylthioacetato)cobalt(II) hexamer in its infrared and visible spectra, is obtained by the dehydration process.
Transition-metal Complexes of Pyrrole Pigments. XXI. One-electron Oxidation of Water Mediated by a Cobalt(III)–Tetradehydrocorrin Complex
Authors: Murakami Yukito , Aoyama Yasuhiro , Tada Toshito 
Published: July 2006

Abstract
The cobalt(III) complex of tetradehydrocorrin (TDHC), having pKa1 6.15 and pKa2 11.50 for successive acid-dissociation of axial aqua ligands, undergoes auto-reduction to the cobalt(II) complex in aqueous carbonate solutions. Kinetic analysis of the reaction indicates the following mechanism: a one-electron transfer from the axial hydroxo ligand to the metal site, subsequent homolytic cleavage of the Co–OH bond, and finally scavenging of the resulting hydroxyl radical with the carbonate ion. At relatively low concentrations of the carbonate ion, the scavenging step is rate-determining; while at [CO32−]≥1.0×10−2 mol dm−3 for [CoIII(TDHC)] of 7.62×10−5−1.27×10−5 mol dm−3, the initial bond homolysis becomes rate-determining. Analysis of the kinetic data in reference to relevant electrode potentials indicates that the powerful oxidation ability of CoIII(TDHC) is responsible for one-electron oxidation of the hydroxo ligand. Reduction of CoIII(TDHC) also takes place in the absence of the carbonate ion, the apparent rate increasing with rise of pH in the range 11–12; deprotonation of the hydroxyl radical, which may prevent the hydroxyl radical and the cobalt(II) species from backward recombination, takes place. The one-electron oxidation of the hydroxo ligand was also significantly accelerated by addition of acetonitrile or t-butyl alcohol.
Iminodimagnesium Reagents. Condensation Reaction with Ketones. Direct Preparation of Anils and a Hydrazone of Xanthone
Authors: Okubo Masao , Hayashi Saeko , Matsunaga Mayumi , Uematsu Yumiko 
Published: July 2006

Abstract
The condensation reaction of ketones with iminodimagnesium reagents (RN(MgBr)2) derived from various primary amines as well as 1,1-disubstituted hydrazines was investigated. N-Arylimines and 1-methyl-1-phenylhydrazones of diaryl ketones were prepared, their yields being affected by the electronic and positional effects of substituents of reagent and substrate. Direct preparation of some anils of xanthone and its 1-methyl-1-phenylhydrazone was achieved by use of the corresponding iminodimagnesium reagents.
The Adsorption of Nucleic Acid Bases by Raney-nickel, -cobalt, and -copper
Authors: Mita Keisuke , Hotta Kazuhiko , Watanabe Shoji 
Published: July 2006

Abstract
The order of the relative affinity of adenine (A), guanine (G), cytosine (C), thymine (T), and uracil (U) to Raney-nickel, Raney-cobalt and Raney-copper was determined in an alkaline solution by means of a columnchromatographic method. These bases could be placed in these orders: G&gt;A&gt;C&gt;U&gt;T for Raney-nickel, G&gt;C&gt;A&gt;T∼U for Raney-cobalt, and A∼G∼C&gt;T∼U for Raney-copper. It was also found that these Raney-metals could be placed in the following order as to ability to distinguish those bases: Raney-nickel&gt;&gt;Raney-cobalt&gt;Raney-copper.
Reaction of Organic Tin(II) Compound with Carbonyl Compound
Authors: Wakeshima Ikuko , Kijima Ichiro 
Published: July 2006

Abstract
The reactions of organic tin(II) compounds bearing Sn–OC bonds with carbonyl compounds, C6H5COR (R=C6H5CO, C6H5, and H) and p-benzoquinone, have been investigated. The tin(II) compound reacted with benzil and p-benzoquinone to yield the corresponding oxidative addition products. However, the oxidative addition reaction did not occur in benzophenone and benzaldehyde.
Proton Equilibria of 5-Dimethylamino-1-naphthalenesulfonyl Group Conjugated to Bovine Serum Albumin. II. Neighboring Effects in Urea and Guanidinium Chloride Solutions
Authors: Ikuta Nobuo , Nomura Eisaku , Koga Joichi , Kuroki Nobuhiko 
Published: July 2006

Abstract
Protonation to the fluorescent probe, 5-dimethylamino-1-naphthalenesulfonyl group, which had been conjugated to bovine serum albumin, was investigated in aqueous solutions of urea and guanidinium chloride. pK values not less than those of the free probe were present even in the positive range of net charge on the protein at high concentration of the denaturants. This was interpreted in terms of the electrostatic and nonpolar effects based on short-range interaction between the probe and its neighboring residues. These effects were substantiated by the reduction of the disulfide bonds in the protein and by the variation of the dielectric constant of the local environment surrounding the probe.
The Oxidation of 3,3-Diphenyl-2-propenoic Acid with Manganese(III) Acetate
Authors: Kurosawa Kazu , Tsujita Tsuyoshi 
Published: July 2006

Abstract
The oxidation of 3,3-diphenyl-2-propenoic acid with manganese(III) acetate in boiling acetic acid gave 3,3-diphenyl-2-propenyl acetate, 4-acetoxymethyl-5,5-diphenyltetrahydro-2-furanone, 3,3-diphenyl-2-propenal, 5,5-diphenyl-2,5-dihydro-2-furanone, 4-acetoxy-5,5-diphenyltetrahydro-2-furanone, benzophenone, and 2-oxo-5,5-diphenyltetrahydro-4-furancarboxylic acid. The reaction pathways are discussed.
The Crystal Structure of the Charge-transfer Complex of Dibenzotetrathiafulvalene-Tetracyanoquinodimethane, DBTTF–TCNQ
Authors: Kobayashi Hayao , Nakayama Jyuzo 
Published: July 2006

Abstract
The crystal of the charge-transfer complex of dibenzotetrathiafulvalene-7,7,8,8-tetracyanoquinodimethane, DBTTF–TCNQ, belongs to the triclinic system; a=10.309(8), b=8.281(2), c=7.727(3) Å, α=110.03(4), β=109.80(4), γ=72.05(3)°, space group P\bar1 with Z=1. The structure has been determined by the X-ray method. DBTTF and TGNQstack alternately along [011] to form mixed columns; this phenomenon is responsible for the low electrical conductivity of DBTTF–TCNQ. The intermolecular distance between DBTTF and TCNQ is 3.303 Å. The charge-transfer complexes of DBTTF with TNB, TCNE, DDQ,and fluoro-TCNQ, were examined by means of X-ray photographs. It is shown that the DDQ, complex, exhibiting a high conductivity, has segregated uniform columns of donors and acceptors, such as were not found in the other complexes.