bluuebunny/crossref_metadata_2025_split huggingface dataset:
Preparation and Properties of Dealuminated Y Type Zeolite
Authors: Yoshida Akira , Nakamoto Hiromi , Okanishi Kazuhito , Tsuru Tatsuro , Takahashi Hiroshi 
Published: July 2006

Abstract
The removal of aluminium cations from Y type zeolite, faujasite, was studied by means of three methods of treatment, i.e., acetic acid–sodium acetate buffer treatment, acetate buffer–Na2H2EDTA treatment and H4EDTA treatment. It was confirmed from the results that the reagent for dealumination of faujasite should have two functions, i.e. weakly acidic and chelating ability with aluminium cations. When more than 23 aluminium cations were extracted from 53 aluminium atoms in a unit cell, lattice was seriously destroyed. But the analysis of the adsorption isotherms suggested that more than 66% of α-cages remained even in a nearly amorphous sample obtained after dealumination as far as 75%. The differential heat of immersion of the dealuminated Y type zeolite in water showed that the acid strength of the surface increased slightly by dealumination.
Determination of Thermodynamic Properties of Diaspore from Its Solubility Data in NaOH Solutions
Authors: Chang Byong-Tae 
Published: July 2006

Abstract
Thermodynamic properties of diaspore in the alkaline pH range were determined from its solubility data in NaOH solutions by a method presented earlier by the author. The ionic solubility product, Ks°=aA1aH⁄aw2, of diaspore was found to depend upon temperature between 280 and 325 °C as follows: logKs°=−1367⁄T–8.67.
The Structure of Alnuserrutriol, a New C31 Dammarane-type Triterpenoid from the Male Flowers of Alnus serrulatoides
Authors: Hirata Toshifumi , Ideo Reiko , Aoki Tadashi , Suga Takayuki 
Published: July 2006

Abstract
The structure of a new C31 dammarane-type triterpenoid, alnuserrutriol, isolated from the male flowers of Alnus serrulatoides CAll. (Betulaceae) has been elucidated to be (3S,12R, 20S)-3,12,20-trihydroxy-24-methylenedammarane by a combination of chemical and spectroscopic methods.
Mechanochemical Reactions at High Pressures. II. Reaction of Methacrylamide
Authors: Okuri Yasuhiro , Ogo Yoshiaki 
Published: July 2006

Abstract
The mechanochemical behavior of methacrylamide was investigated at room temperature and at static pressures of up to 15 kbar. The determinations of the IR spectrum, the ESR signal, the X-ray diffraction pattern, and the molecular weight by GPC apparatus confirmed that the reaction products were amorphous polymethacrylamide. The reaction of methacrylamide under conditions of high pressure combined with simultaneous shear deformation(HP+SSD) is a free radical polymerization. The concentration of radicals of polymethacrylamide and the relation between the conversion and the shearing degree suggest that an acrylamide crystal is less stable than one of methacrylamide. Methacrylamide was not reached 100% conversion even at about 2π rad shearing.
Effect of Mixed Surfactant upon Stability and Particle Size of Emulsion
Authors: Ogihara Kimihiko , Ueno Minoru , Meguro Kenjiro 
Published: July 2006

Abstract
An effect of a mixed surfactant of SDS and homogeneous octaethylene glycol dodecyl ether (8ED) upon the stability and particle size of an octane-in-water emulsion was studied. The mixed surfactant solutions were found to exhibit equi-interfacial-tension over a wide concentration region of a mixed 8ED; the SDS concentrations were 6, 8, and 20 mmol dm−3. The emulsion prepared by using mixed surfactant solution in such a concentration region showed a similar mean particle size. When SDS concentration was kept at 8 or 20 mmol dm−3, The emulsions prepared by the mixed surfactant solutions had similar stability, independently of the mixed 8ED concentration. In the presence of 1 mmol dm−3 of SDS, the stability of the emulsions increased with the increasing concentration of mixed 8ED. In the case of SDS concentration of 6 mmol dm−3, the emulsion was most stable at 1×10−3 mol dm−3 of mixed 8ED.
Investigation on the Complex Formation of Some Lanthanoids(III) and Actinoids(III) with Chloride and Bromide
Authors: Fukasawa Tetsuo , Kawasuji Isamu , Mitsugashira Toshiaki , Satô Akiko , Suzuki Shin 
Published: July 2006

Abstract
Stability constants (β1 and β2) of the chloro and bromo complexes of tervalent Sm, Eu, Gd, Tb, Ac, Am, Cm, Bk, and Cf were determined by a solvent extraction method under the conditions of ionic strength and acidity to be 3.0 and 0.15 M (1 M=1 mol/dm3), respectively. Stability constants obtained were discussed with respect to the formation mechanism. A much larger contribution from the inner sphere complex formation was observed in chloro complexes than bromo complexes on tripositive actinoids.
Electrochemical Study of Reaction of Hyperoxide with Tris(1,10-phenanthroline)iron(II) in Dimethyl Sulfoxide
Authors: Umemoto Kisaburo , Saeki Toyohumi , Matsuura Niro , Motegi Katsue 
Published: July 2006

Abstract
Reaction of hyperoxide with Fe(phen)32+ in DMSO was studied by polarography, cyclic voltammetry, and spectroscopy. Voltammetric study of oxygen showed that disproportionation of hyperoxide is promoted by Fe(phen)32+. Controlled potential coulometry exemplified the stoichiometry of the reaction to be 2:1 for hyperoxide to Fe(phen)32+ in support of the proposed disproportionation mechanism of hyperoxide. Analysis of reaction products proved that Fe(phen)32+ decomposes on reaction with hyperoxide in DMSO; the reaction products were iron(III) hydroxide and liberated ligands, neither metal hyperoxide nor oxygen bridged metal complexes being detected.
The Raman Spectra of Cobalt(III) Complexes. III. Differentiation between cis and trans Isomers of Tetraamminecobalt(III) Complexes
Authors: Kanamori Kan , Kawai Kiyoyasu 
Published: July 2006

Abstract
The Raman and the infrared spectra of tetraamminecobalt(III) complexes have been measured to find the vibrational criteria for differentiating between the cis and trans configurations. Conspicuous differences between the isomers were found in the ν(Co–NH3) region. Thus, generally the trans isomers have two bands at ca. 480 and ca. 450 cm−1 in the Raman spectra and one band at ca. 510 cm−1 in the infrared spectra, and the mutual exclusion rule virtually holds. On the other hand, the cis isomers have more than three bands in the region of both the Raman and the infrared spectra.
Solubility Diagrams of Cobalt(III) Complexes Containing Amino Acid. II. Spontaneous Resolution of Bis(ethylenediamine)glycinatocobalt(III) Salts
Authors: Kaki Satoshi , Yamanari Kazuaki , Shimura Yoichi 
Published: July 2006

Abstract
The binary and ternary solubility phase diagrams of the racemic and optically active complexes [Co(gly)(en)2]X2 were determined in water (X2=SO4, S2O3, (NO3)2, (SCN)2, (CH3CO2)2, (ClO4)2, (CH3CO2)ClO4, and [Sb2(d-tart)2]). Spontaneous resolution was found for the double salt of [Co(gly)(en)2](CH3CO2)ClO4 at 5–50 °C and for [Co(gly)(en)2]SO4 at 39–50 °C; the latter of these has been shown to crystallize as both a racemic compound (below 39 °C) and a conglomerate (above 39 °C).
Construction of an Adiabatic Calorimeter Workable under Constant High-pressure
Authors: Oguni Masaharu , Watanabe Kazuo , Matsuo Takasuke , Suga Hiroshi , Seki Syûzô 
Published: July 2006

Abstract
An adiabatic high-pressure calorimeter was constructed. The calorimeter cell was devised for minimization of the cell mass relative to the volume of the sample chamber. The pressure in the cell was controlled by joining the cell with a transmitting tube to a stabilized high-pressure system. The adiabatic conditions were achieved by temperature control of the transmitting tube as well as of adiabatic shields inside the cryostat. Procedures for the precise pressure control and for the determination of the molar volume and heat capacity with the correction for the mass transfer of pressure-transmitting liquid in a series of measurement were discussed. The apparatus is capable of measurement under constant pressure up to 110 MPa and over the temperature range from 100 to 370 K. The results on liquid 3-methylpentane which was used as the pressure medium proved satisfactory performance of this new-type calorimeter.
Optically Active Vanadium(IV) and (V) Complexes Containing (S)-N-[1-(2-Pyridyl)ethyl]iminodiacetate Ion
Authors: Okazaki Kenichi , Saito Kazuo 
Published: July 2006

Abstract
New optically active vanadium(IV) and (V) and mixed valence(IV,V) complexes containing a quadridentate ligand (S)-N-[1-(2-pyridyl)ethyl]iminodiacetate (S-peida2−) have been prepared: i.e. uninuclear distorted octahedral [VIVO(S-peida)(H2O)] and Li[Vv(O)2(S-peida)], a mixed valence binuclear Na[V2IV,VO3(S-peida)2], and an oxo-peroxo complex Na[VvO(O2(2−))(S-peida)]. The tertiary amino nitrogen of S-peida2− occupies the trans position to the oxo ligand in the first three complexes, but trans to the peroxo ligand in the last complex. Three absorption bands of [VIVO(S-peida)(H2O)] in the region from 10000 to 30000 cm−1 have been assigned to the d-d transitions, dxy→(dxz,dyz), dxy→dz2−y2, and dxy→dz2, in the order of increasing frequency. The mixed valence complex gives an intervalence transfer band and two d-d bands in the region from 9000 to 25000 cm−1. It gives a negative and a positive CD peak corresponding to the intervalence transition. The VV(O)2 and the VVO(O2) complex give a characteristic absorption shoulder at 25000 and a peak at 23500 cm−1 with corresponding weak negative CD peaks, respectively. They are assigned to charge transfer bands from oxo and peroxo to VV, respectively. The sign of CD peaks seems to be governed mostly by asymmetric arrangement of the ligating atoms and asymmetric deviation of ligating atoms from regular octahedron.
The Structure of Nickel(II) Bromide in Highly Concentrated Aqueous Solution by X-Ray Diffraction Analysis
Authors: Wakita Hisanobu , Ichihashi Mitsuyoshi , Mibuchi Takeharu , Masuda Isao 
Published: July 2006

Abstract
An X-ray diffraction analysis of the aqueous nickel(II) bromide solutions with the concentrations of 2.004, 4.064, and 4.845 mol dm−3 demonstrated the presence of the complex [NiBr(H2O)5]+. This inner-sphere type complex has interatomic distances of 2.52–2.58 Å for Ni–Br and of 2.04–2.05 Å for Ni–OH2. With an increase in the concentration the average number of the Ni–Br contacts per one Ni2+ ion increased; it was found to be 0.18, 0.47, and 0.68 in the 2.004, 4.064, and 4.845 mol dm−3 solutions, respectively.
A Novel Synthesis of 3-Aryl-1,2,4-benzotriazines via N-Phenylsulfonyl-N″-arylbenzamidrazones
Authors: Ito Suketaka , Tanaka Yumo , Kakehi Akikazu 
Published: July 2006

Abstract
3-Aryl-1,2,4-benzotriazines were obtained in good yields by the mercury(II) oxide-oxidation of N-phenylsulfonyl-N″-arylbenzamidrazones prepared from N-(phenylsulfonyl)benzohydrazonoyl chlorides and anilines. From the synthetic viewpoint for benzotriazines, this method may be of high utility on account of the availability of starting materials and higher yields.
Reactions of Aldonitrones with Phenylphosphonothioic Dichloride and Related Compounds. Formation of 2-Arylbenzothiazoles from α,N-Diarylnitrones
Authors: Yoshifuji Masaaki , Nagase Rihei , Kawashima Takayuki , Inamoto Naoki 
Published: July 2006

Abstract
Reactions of α-aryl-N-methylnitrones with phenylphosphonothioic dichloride (1), diphenylphosphinothioic chloride (6), or thiophosphoryl trichloride (7) gave N-methylbenzamide and N-methylthiobenzamide derivatives, and the latter became major in the presence of tertiary amine. α,N-Diarylnitrones (4) reacted with 1 to give 2-arylbenzothiazoles (5) at room temperature in moderate yields. Reaction of 4 with 6 (at room temperature) or 7 (in refluxing THF) gave 5 in a low yield, whereas a similar reaction of 4 with 7 at 0 °C afforded N-benzylidene-2-chloroaniline in a high yield. A mechanism for the formation of 5 has been discussed briefly.
Photochemical Reaction of Ethyl 3-Oxo-2,4-diphenylbutanoate
Authors: Yoshioka Michikazu , Osawa Haruhiko , Fukuzawa Shinji 
Published: July 2006

Abstract
Irradiation of ethyl 3-oxo-2,4-diphenylbutanoate in hexane gave the products formed by recombination of the radicals (Ph–\dotCH2 and/or Ph–\dotCH–CO2Et) resulting from decarbonylation, together with small amounts of 1,2-diphenylethanol and ethyl α-hydroxyphenylacetate, whereas in benzene no 1,2-diphenylethanol was found. Under oxygen an increased amount of ethyl α-hydroxyphenylacetate and no radical recombination products were observed.
Palladium-catalyzed New Carbon-Phosphorus Bond Formation
Authors: Hirao Toshikazu , Masunaga Toshio , Yamada Naoto , Ohshiro Yoshiki , Agawa Toshio 
Published: July 2006

Abstract
Dialkyl arylphosphonates are prepared by the palladium-catalyzed reaction of aryl bromides with dialkyl phosphite in the presence of triethylamine. The similar treatment of vinyl bromides gives dialkyl vinylphosphonates stereoselectively.
Branched-chain Sugars. XXIX. Synthesis of Moenuronic Acid (4-C-Methyl-d-glucuronic Acid)
Authors: Sato Ken-ichi , Kubo Kazusuke , Hong Namgi , Kodama Hisashi , Yoshimura Juji 
Published: July 2006

Abstract
Moenuronic acid (4-C-methyl-d-glucuronic acid), a branched-chain sugar component of moenomycin A, was synthesized by the introduction of an axial C-methyl group into methyl 2,3-di-O-benzyl-6-O-trityl-α-d-xylo-hexopyranosid-4-ulose by the reaction with methyllithium, followed by deprotection and platinum-catalyzed oxidation of the C-6 position. Stereoselectivities in a few reactions for the introduction of C-methyl group were examined.
The Crystal Structure of o-Phenylenediamine Dihydroiodide
Authors: Kozawa Kozo , Uchida Tokiko 
Published: July 2006

Abstract
Crystals of o-phenylenediamine dihydroiodide are orthorhombic; a=7.828(1), b=13.158(1), c=5.043(1) Å, Z=2, and space group Pmnm. The structure was solved by the heavy-atom method and refined with 1359 diffractometer data points to the final R=0.052. It is isostructural with o-phenylenediamine dihydrobromide. Protonated amino groups link to iodide ions by hydrogen bonds.
Crystal and Molecular Structure of trans-2,5-Dimethylpiperazine
Authors: Okamoto Kojun , Sekido Kiyotane , Ono Haruaki , Noguchi Teruo , Hirokawa Sakutaro 
Published: July 2006

Abstract
The crystal structure of trans-2,5-dimethylpiperazine has been determined by means of the X-ray method. The molecule is centrosymmetric, the piperazine ring having a chair form. The methyl groups are in the equatorial position. The molecules are linked together by N–H···N hydrogen bonds (N···N=3.305(3) Å) to form infinite ribbons along [011].
Selective Adsorption of Alkylbenzenesulfonates on Quaternized Crosslinked Poly(4-vinylpyridine)
Authors: Kawabata Nariyoshi , Natsuhara Eisuke , Higuchi Ichiro , Yoshida Jun-ichi 
Published: July 2006

Abstract
Selective ion-exchange adsorption of a series of alkylbenzenesulfonate ions (CnBS−) on a series of crosslinked poly(N-alkyl-4-vinylpyridinium bromide) (CmVP) and crosslinked poly(N-benzyl-4-vinylpyridinium bromide) (BVP) was investigated based upon the selectivity coefficient of the resins for CnBS− relative to Br− which was expressed as KBr−CnBS−. In the adsorption of CnBS− of n&lt;8, the selectivity coefficient linearly increased with the number of carbon atoms of the alkyl chain, n, of CnBS−, which was ascribed to the hydrophobic interaction between the alkyl chain of CnBS− and the resin. In the adsorption of CnBS− of n&gt;8, however, the selectivity coefficient did not increase with n, which was explained in terms of a steric effect. The selectivity coefficient also increased with the number of carbon atoms of the alkyl chain, m, of CmVP, but saturation was also observed for the adsorption on CmVP of m&gt;12. In the adsorption of CnBS− of n&lt;8 on BVP, significant influence of the degree of quaternization was not observed. In the adsorption of C12BS−, however, BVP of lower degree of quaternization showed a much larger selectivity than that of BVP of higher degree of quaternization. The observation indicated that steric repulsion between CnBS− ions adsorbed on the surface of the resin played a crucial role.
Vibration-rotation Spectra of Formamides
Authors: Sugawara Yoko , Hamada Yoshiaki , Tsuboi Masamichi 
Published: July 2006

Abstract
Taking advantage of the Fourier transform infrared (FTIR) spectrophotometry in accumulating a very weak available radiation, which comes out from a multiple-reflection-type gas-cell (17 m), we have been able to record the infrared absorption spectrum of formamide (HCONH2 or DCONH2) at room temperature, where its vapor pressure is only 0.1 Torr (1 Torr≈133.322 Pa) in the order of magnitude. From an analysis of the rotational structure (resolution 0.5 cm−1) of the C–H stretching band, a revised set of parameters has been obtained. A Q-branch analysis was made for the v=2←0 and v=3←1 bands (resolution 0.24 cm−1) of the amino wagging vibration, where v is its vibrational quantum number. The rotational constants A−B were determined to be 2.0269 cm−1 for the v=2 state and 1.9990 cm−1 for the v=3 state, and the transition frequencies 657.75 cm−1 for v=2←0 and 769.85 cm−1 for v=3←1. On the basis of these new parameter values, a discussion was made of the amino wagging coordinate of this molecule.
Extractive Spectrophotometric Determination of Antimony(III), Bismuth, Indium, and Gallium with Pyrocatechol Violet and Tridodecylethylammonium Bromide
Authors: Shijo Yoshio , Shimizu Tokuo , Sakai Kaoru 
Published: July 2006

Abstract
The spectrophotometric method for the determination of trace amounts of antimony(III), bismuth, indium, and gallium based on the solvent extraction of the ion associate formed between anionic metal–Pyrocatechol Violet complexes and tridodecylethylammonium bromide is proposed. The maximum absorbance of the extracted species occur at 530, 564, 600, and 595 nm for antimony(III), bismuth, indium, and gallium. The molar absorptivities for antimony(III), bismuth, indium, and gallium are 3.32×104, 3.31×104, 8.20×104, and 8.00×104 dm3 mol−1 cm−1. The optimum pH ranges for the extraction of antimony(III), bismuth, indium, and gallium are from 3.7 to 4.8, from 5.8 to 6.7, from 5.3 to 5.4, and from 5.5 to 6.2 respectively. The composition of the extracted complexes (metal:PV:TDEA) are estimated to be 1:2:3 for antimony(III) and 1:2:2 for the other metals. The interference of foreign ions is described.
Cobalt(III) Complexes with Quadridentate Ligands. III. The Preparation and Properties of the Salicylato or Dichloro(quadridentate amine)cobalt(III) Complexes
Authors: Yamamoto Yoshihisa , Kudo Hiroko , Toyota Eiko 
Published: July 2006

Abstract
In the 1H and 13C NMR spectra of trans- or cis-dichloro(quadridentate amine)cobalt(III) chloride hydrates, [CoCl2L]Cl·nH2O (L: 2,2,2-tet(trien) (1a), 2,3,2-tet (1b), 3,2,3-tet (1c), and 3,3,3-tet (1d)), the signals of their methylene protons and methylene carbons have been assigned to the individual methylene protons and methylene carbon of the coordinated quadridentate amine ligands. The order of 1H and 13C chemical shift of their methylene protons and methylene carbon is as follows:
(Remark: Graphics omitted.)
Thus, the signal of the center methylene protons (or carbon) of the coordinated quadridentate amine ligands appears at higher field than that of the NH-side methylene protons (or carbon). cis-β1-Salicylato(3,7-diazanonane-1,9-diamine)cobalt(III) chloride hydrate, cis-β1-[Co(sal)(2,3,2-tet)]Cl·H2O (3b), and cis-β2-salicylato(quadridentate amine)cobalt(III) chloride hydrates, cis-β2-[Co(sal)L]Cl·nH2O (L: 2,3,2-tet (4b), 3,2,3-tet (4c) and 3,3,3-tet (4d)) have been isolated from a reaction mixture of sodium salicylate or salicylic acid and 1b–d. The properties of 3b and 4b are similar to those of the previously reported complexes 3a (L: 2,2,2-tet, β1-form) and 4a (L: 2,2,2-tet, β2-form), respectively. Those of 4c are similar to those of 4d. Complex 4d is the most unstable complex among 4a–d. This property is attributable to the center methylenes of the coordinated quadridentate amine ligands.
Preparation and 119Sn NMR Spectra of Coordination Compounds of Di-t-butyltin(IV) Derivatives
Authors: Otera Junzo , Yano Torn , Kusakabe Kazunori 
Published: July 2006

Abstract
Di-t-butyltin bis(chelates) were prepared and characterized in comparison with dimethyltin analogs. 119Sn NMR spectra show a six-coordinate configuration for the acetylacetonate, tropolonate, and oxinate; a nonchelating structure is partially involved in the 2-methyloxinate and dialkyldithiocarbamates. Di-t-butyltin dichloride gives no isolable adducts with monodentate ligands; however, the Job’s continuous variation method using 119Sn NMR spectra has revealed that complexations with 2 : 1 and/or 1 : 1 donor/Sn molar ratios occur in ether. It has been concluded that t-butyl group reduces the acceptor property of tin by means of both inductive and steric effects.
Preparation and Circular Dichroism Spectra of trans-Dichlorocobalt(III) Complexes with (2-Aminoethyl)diphenylphosphine and Related Ligands. Crystal Structures of trans(Cl,Cl), cis(P,P)-[CoCl2{NH2CH2CH2P(C6H5)2}2]·1/2[CoCl4] and -[CoCl2{NH2CH2CH2P(C4H9)(C6H5)}2]ClO4
Authors: Kinoshita Isamu , Yokota Yasuno , Matsumoto Keiji , Ooi Shun’ichiro , Kashiwabara Kazuo , Fujita Junnosuke 
Published: July 2006

Abstract
Green trans-dichlorocobalt(III) complexes with a variety of achiral and chiral (2-aminoalkyl)phosphines have been prepared and characterized. The crystal structures of [CoCl2{(2-aminoethyl)diphenylphosphine}2]1/2[CoCl4] and [CoCl2{(R)-(2-aminoethyl)butylphenylphosphine}2]ClO4 have been determined by X-ray analyses. Both complex cations have a distorted octahedral coordination with two Cl atoms in the trans positions and two P (and N) atoms in the cis positions. The Co–N distances (2.02–2.05 Å) are 0.05–0.07 Å longer than the usual Co(III)–N distance, and the P–Co–P angles are widened (99.4 and 103.1°) on account of bulky substituents on the phosphorus atoms. The circular dichroism spectra of [CoCl2{(2-aminoethyl)diphenylphosphine}2]ClO4 (space group P3221) in Nujol mull and the complexes with chiral (aminoalkyl)phosphines in methanol solutions have been recorded and compared with those of related complexes.
Magnetic Properties of [μ-(Ethylenediaminetetraacetato)-di-μ-sulfido-bis{oxomolybdate(V)}]2− and [μ-(Ethylenediaminetetraacetato)-di-μ-oxo-bis{oxomolybdate(V)}]2− Ions
Authors: Kobayashi Hanako , Tsujikawa Ikuji , Shibahara Takashi , Uryû Norikiyo 
Published: July 2006

Abstract
Sodium [μ-(ethylenediaminetetraacetato)-di-μ-sulfido-bis{oxomolybdate(V)}]·n-hydrates, n=2 and 3, are antiferromagnetic dimers with an exchange interaction within a pair of Mo(V) ions of about −140 k having an averaged g-value of about 2 for each Mo(V) ion. In these salts, magnetic moments of only about 0.5 Bohr magneton are localized at Mo(V) sites, though Mo(V) has one electron in the 4d orbital. Here a π-bonding looped structure is considered to have a contribution to the diamagnetic susceptibilities of about −5.0×10−5 (CGSemu). Sodium [μ-(ethylenediaminetetraacetato)-di-μ-oxo-bis{oxomolybdate(V)}]·n-hydrates, n=3, 4, and 6, are the antiferromagnetic dimers with an exchange interaction within a pair of Mo(V) ions of about −150 k and an averaged g-value of 1.91. The magnetic moments of only about 0.5 Bohr magneton are localized at Mo(V) sites. In these salts, too, a π-bonding structure in each dimer is considered to make a contribution to the diamagnetic susceptibility of about −4.0×10−5 (CGSemu). A broad minimum of the molar magnetic susceptibility of [μ-(ethylenediaminetetraacetato)-di-μ-oxo-bis{oxomolybdate(V)}] salts was considered due to the conformation interconversion.
The Use of Grignard Reagents in Carbohydrate Synthesis. The Synthesis of Branched-chain Deoxy Sugars and Their Anomerizations
Authors: Kawana Masajiro , Koresawa Tetsuo , Kuzuhara Hiroyoshi 
Published: July 2006

Abstract
The reactions of methyl 5-O-benzyl-2-O- and -3-O-tosyl-β-d-ribofuranosides with methylmagnesium iodide gave, in one-step, 2-deoxy-3-C- and 3-deoxy-2-C-methyl branched-chain sugars, respectively. These sugars were anomerized with Grignard reagents; the thermodynamically more stable anomers were converted preferentially into the respective less stable anomers.