bluuebunny/crossref_metadata_2025_split huggingface dataset:
Molecular Recognition Mechanism between Mesohemin and the Antibody 11D1
Authors: Feng Yan , Gao Gui , Chen Si-geng , Uemura Toshimasa , Yang Tongshu 
Published: June 2004

Abstract
This study focuses on the molecular recognition between mesohemin and the monoclonal antibody 11D1 specific for N-hydroxymethyl mesohemin. Results showed that the antibody 11D1 bound strongly to mesohemin with a dissociate constant of 2.1 × 10−6 M. A fluorescent spectroscopic study of the mesohemin binding to the antibody 11D1 suggested the existence of an electrostatic interaction between them. The interactions among the substrate, the mesohemin and the antibody 11D1 revealed that the mesohemin inserted into the binding site of the antibody 11D1 and bound to the antibody 11D1 with “edge-on” style.
Enhancement of β-Hydrogen Elimination Reaction on Platinum-containing Heterodinuclear Complexes
Authors: Fukuoka Atsushi , Sugiura Takeshi , Yasuda Toshiyuki , Taguchi Tomokazu , Hirano Masafumi , Komiya Sanshiro 
Published: June 2004

Abstract
Novel heterodinuclear ethylplatinum complexes with a 1,2-bis(diphenylphosphino)ethane (dpe) ligand (dpe)EtPt-MLn (MLn = MoCp(CO)3, WCp(CO)3, Mn(CO)5, Co(CO)4) have been synthesized and characterized. The dinuclear complexes show higher activity for β-H elimination reaction than a mononuclear PtEtCl(dpe), and in the case of Pt-Mo and Pt-W complexes the reaction proceeds with retention of the dinuclear structure.
Absolute Rate Constants of Mo2 (X 1Σg+) and Mo (a 7S3) with NO at Room Temperature
Authors: Wakabayashi Tomohiro , Nakai Yoshihiro , Ishikawa Yo-ichi 
Published: June 2004

Abstract
The gas-phase reactivities of nitrogen monoxide for groundstate molybdenum atoms and dimers have been investigated in a mass-flow controlled cell. Transient concentration of Mo (a 7S3) or Mo2 (X 1Σg+, v = 0) produced by 355-nm multiphoton decomposition of Mo(CO)6 was monitored by a laser-induced fluorescence. These measurements suggest the simple adduct formation such as Mo(NO) for the reaction of Mo + NO but a certain chemical bond activation of NO on Mo2.
In situ Formed Three Layer Film by Isomerization of Fluorinated Polyisoimide in Polyethersulfone as a Matrix Polymer
Authors: Mochizuki Amane , Yamada Kazuo , Ueda Mitsuru , Yokota Rikio 
Published: June 2004

Abstract
The novel three layer film comprised of a polyimide (PI)-polyether sulfone (PES)-PI structure has been developed. The film was cast from the homogeneous blend solution of polyisoimide (PII) and poly(oxy-1,4-phenylenesulfonyl-1,4-phenylene) (PES) in N,N-dimethylacetamide (DMAc) on to a glass plate. PII was prepared by the ring-opening polyaddition of 4,4′-hexafluoroisopropylidenebis(phthalic anhydride) (6FDA) and 4,4′-hexafluoroisopropylidenebis(p-phenyleneoxy)dianiline (BAPF) followed by treatment with trifluoroacetic anhydride (TEAA)-triethylamine (TEA) in N-methyl-2-pyrrolidone (NMP). The morphology of blend film was investigated by transmission electron microscopy (TEM). The formation of three layer film having a PI-PES-PI structure was confirmed by energy-dispersive X-ray analyzer (EDX).
Novel Solvent Effect on Highly Selective Photochemical Isomerization of 2-[2-(2-Pyrrolyl)ethenyl]quinoxaline
Authors: Arai Tatsuo , Maeda Yasunori 
Published: June 2004

Abstract
2-[2(2-Pyrrolyl)ethenyl]quinoxaline (II) underwent one-way trans→cis isomerization in benzene, while in methanol II underwent isomerization giving higher composition of trans isomer at the photostationary state.
Control of Product Distribution by Use of Surfactants in Cathodic Reduction of Acetophenone
Authors: Kodama Yorimitsu , Imoto Mitsutaka , Ohta Nobuaki , Kitani Akira , Ito Sotaro 
Published: June 2004

Abstract
In cathodic reduction of acetophenone to 1-phenylethanol and 2,3-diphenyl-2,3-butandiol, 1-phenylethanol was selectively yielded using micelle formed cationic surfactants at control potential −2.1 V.
Synthesis of Polycyclic Compounds by the Reaction of Co2(CO)6 Complexed 1-[o-(1-Alkynyl)phenyl]cyclopropanols
Authors: Iwasawa Nobuharu , Matsuo Takeshi 
Published: June 2004

Abstract
1-[o-(1-Alkynyl)phenyl]cyclopropanols are converted to 2,3-dihydro-1-naphthalenone derivatives by heating their hexacarbonyldicobalt complexes in 2-propanol. Furthermore, a new type of isomerization-cyclization reaction proceeds to give 3a,4-dihydro-3H-cyclopenta[a]inden-2-one derivatives when the same reaction is carried out in the presence of DABCO.
Rietveld Analysis of the Superconducting NaxHyC60
Authors: Nakano Chikako , Imaeda Kenichi , Kröber Jonas , Inokuchi Hiroo 
Published: June 2004

Abstract
The room temperature structure of a superconducting phase of NaxHyC60 was determined from the analysis of its powder X-ray diffraction pattern by the Rietveld method. THe space group is Fm3m, with Z=4, and the refined cell parameter a is 14.406(1) Å. Na+ ions in the octahedral and tetrahedral interstitial sites are offcentered. From their occupancies, the composition x is estimated at 3.6.
First Total Synthesis of Mer-N5075A, A New HIV-I Protease Inhibitor from Streptomyces Chromofuscus
Authors: Konda Yaeko , Takahashi Yukihiro , Mita Hiroka , Takeda Kazuyoshi , Harigaya Yoshihiro 
Published: June 2004

Abstract
The first total synthesis of Mer-N5075A (1), a new potential HIV-I protease inhibitor produced from Streptomyces Chromofuscus, was achieved. The synthetic method is available for Mer-N5075A analogues such as α-MAPI (2), GE20372 A (4) and other chemcally modified compounds.
A 16 Electron Cyclobutadiene—benzene-1,2-dithiolate Complex of Palladium(II) Bearing A Two-legged Piano-stool Geometry: (η4-C4Me2(tBu)2)Pd(1,2-S2C6H4)
Authors: Mashima Kazushi , Kaneko Sei-ichi , Tani Kazuhide 
Published: June 2004

Abstract
A 16-electron cyclobutadiene—palladium(II)—thiolate complex (η4-C4Me2(tBu)2)Pd(S2C6H4) (2: S2C6H4=1,2-benzenedithiolate) is prepared by treatment of [(η4-C4Me2(tBu)2)PdCl2]2 (1) with disodium 1,2-benzenedithiolate, and its monomeric two-legged piano-stool structure was characterized by X-ray analysis as well as its LMCT band caused by donation of the filled S(pπ) electrons to the empty Pd(dπ*) orbital.
Preferential Solvation Studied by the Fluorescence Spectrum of Pyrene in Water-Alcohol Binary Mixtures
Authors: Kusumoto Yoshihumi , Takeshita Yuka , Kurawaki Junichi , Satake Iwao 
Published: June 2004

Abstract
The local mole fraction of an alcohol such as methanol, ethanol, and 1-propanol was determined on the basis of the polarity variation sensed by pyrene in water-alcohol binary mixtures. The data indicate that alcohol molecules preferentially solvate pyrene in water; the degree of preferential solvation increases with an increase in the extent of the hydrophobic interaction between pyrene and alcohols.
The Mode of Substrate-Recognition Mechanism of Arylmalonate Decarboxylase
Authors: Kawasaki Takayasu , Saito Koji , Ohta Hiromichi 
Published: June 2004

Abstract
A mode of substrate-recognition mechanism by an enzayme, arylmalonate decarboxylase, is proposed. 19F- and 31P-NMR spectra of a complex consisting of the enzyme and an active site-directed inhibitor demonstrated that a hydrophobic interaction between the enzyme and its substrate via their aromatic rings was especially important for the enzyme function.
Effect of Structure of Modifiers Adsorbed on Gold Single Crystal Surfaces on the Promotion of the Electrode Reaction of Cytochrome c
Authors: Taniguchi Isao , Yoshimoto Soichiro , Nishiyama Katsuhiko 
Published: June 2004

Abstract
On Au(100) and Au(110) single crystal surfaces, clear electrochemical responses of cytochrome c were observed only at electrodes modified with bis(4-pyridyl)disulfide or 4-mercaptopyridine, but not at all on the surfaces modified with bis(2-pyridyl)disulfide or 2-mercaptopyridine.
Two Possible Pathways of Formation of Pristane and Phytane from Chlorophylls on Diagenesis: Carbon Isotopic Results from Laboratory Heating of Chlorophyll-a
Authors: Ishiwatari Mariko , Ishiwatari Ryoshi , Yamada Keita 
Published: June 2004

Abstract
Carbon isotopic ratios of C20 and C19 isoprenoid hydrocarbons (ISOPs) produced on laboratory heating (250 °C to 350 °C) of chlorophyll-a (Chl-a) were measured to understand the linkage between the phytyl chain of Chl-a and the ISOPs found in petroleum and geological samples. About 1 ‰ difference in carbon isotopic ratio was observed between the C20 and the C19 ISOPs. This difference almost agrees with that observed by Trindade et al. for the ISOPs in several petroleum mixtures.
Alternate Intercalation of Fluoran Dye and Tetra-n-decylammonium Ion Induced by Electrolysis in Acetone-Clay Suspension
Authors: Ito Kengo , Fukunishi Koushi 
Published: June 2004

Abstract
Electrochemically induced acid and base promoted the alternate intercalation of fluoran dye and tetra-n-decylammonium ion and the reversible color change of the dye in the acetone-clay suspension, and the procedure was applied to rewritable recording media by changing the polarity of the voltage.
Dissociative Excitation of CH4 via Triplet Superexcited State by Collisions with the Metastable Ne(3P0,2) Atoms in a Neon Flowing Afterglow
Authors: Tsuji Masaharu , Komatsu Takahiro , Tanaka Makoto , Nakamura Masafumi , Nishimura Yukio , Obase Hiroshi 
Published: June 2004

Abstract
The CH(A-X, B-X, C-X) emission systems have been observed in the energy transfer reaction of the metastable Ne(3P0,2) atoms with CH4 in a neon flowing afterglow. The nascent rovibrational distributions of CH(A,B) were determined by a spectral simulation: N0:N1:N2 = 100(T0 = 3500 ± 300K):58 ± 3(T1 = 2800 ± 200K):9 ± 1(T2 = 2400 ± 300K) for CH(A) and N0 = 100 (T0 = 3000 ± 300K) for CH(B).
Detection of the Site of an Enantioselective Interaction between Chiral Polypinanylsilane and a Hydrophobic Enantiomer by Use of Circular Dichroism
Authors: Shinohara Ken-ichi , Aoki Toshiki , Kaneko Takashi , Oikawa Eizo 
Published: June 2004

Abstract
Since optically active poly(methylpinanylsilane) synthesized by Na-mediated polycondensation of the corresponding dichlorosilane showed an Cotton effect at the UV region of Siσ-Siσ* transition of the main chain in the circular dichroism (CD) spectrum, the main chain was found to have a chirality. The Cotton bands in the presence of the (+)-isomer of a hydrophobic compound were different from those in the presence of the (−)-isomer. Therefore, this polymer was found to have an ability of the enantioselective recognition. On the other hand, a hydrophilic compound did not affect the CD band. These findings indicate that the recognition was caused mainly by hydrophobic diastereomeric interaction between the chiral compound and chiral main chain in this polymer.
Partial Oxidation of Light Alkanes during O2-H2 Cell Reactions at Room Temperature
Authors: Zhang Qinghong , Otsuka Kiyoshi 
Published: June 2004

Abstract
The partial oxidation of light alkanes (methane, ethane, and propane) has been carried out successfully by applying an O2-H2 cell at ambient temperature and atmospheric pressure. The conversion of alkanes increased in the order of CH4 &lt; C2H6 &lt; C3H8. The selectivity to useful oxygenates was the highest in the case of propane. The selectivity to acetone was higher than 65%.
Preparation of 1T-phase of Ta1−XIrXS2 System
Authors: Shimakawa Mamoru , Imazu Aya , Hayashi Koya 
Published: June 2004

Abstract
The 1T-phase in the TaS2-IrS2 system is prepared in the temperature range from 800 °C to 1000 °C. The 1T-phase is stable in the composition range between 0% and 50% IrS2 at 1000 °C. This 1T-phase is the compound of a new concept of the “electron-excess-1T”, judging from the number of valence electrons of the metal atoms.
A Facile Synthesis of (Imidazo[1,2-a]pyrimidin-2-yl)sugars by a Modified Maillard Reaction
Authors: Kolar Patrik , Tisler Miha 
Published: June 2004

Abstract
(5,6,7,8-Tetrahydroimidazo[1,2-a]pyrimidin-7(8H)-on-2-yl)sugars are easily prepared in a one-pot synthesis in basic ethanolic solutions from ethyl β-alaninate, d-aldoses and cyanamide in 21-48% yield.
Conformational Study of C2 Symmetrical Benzo[c]phenanthridine Alkaloid Derivatives
Authors: Marek Radek , Toušek Jaromír , Králík Lukáš , Dostál Jirí , Sklenár Vladimír 
Published: June 2004

Abstract
We report utilization of the phase-sensitive GSQMBC experiment for the study of benzo[c]phenanthridine derivatives. The technique allows determination of the C2 symmetrical structures by observation of two different scalar interactions between H6 and C6 atoms as well as measurement of long range 1H-13C coupling constant. A prefered conformation determined using a dihedral angle constraint extracted from the measured 3JH,C coupling constant and AM1 calculations is discussed.
Direct Observation of a New Type Imperfection in Mordenite: Overgrowth of the Different Structure on MOR {110}
Authors: Yoshida Satoshi , Tokunaga Yuji , Kamioka Kunikazu , Okada Tadashi , Terasaki Osamu 
Published: June 2004

Abstract
A new type imperfection in mordenite, overgrowth of the different structure on MOR {110}, was observed by transmission electron microscopy(TEM). The overgrowth structure is a very small amount and/or minute, and would be a new zeolite structure produced locally.
Catalytic Properties of Ni-MoO3 for the Isomerization of Heptane
Authors: Matsuda Takeshi , Niwayama Takamitsu , Sakagami Hirotoshi , Takahashi Nobuo 
Published: June 2004

Abstract
The catalytic properties of Ni-MoO3 for the isomerization of heptane were investigated. After treatment with a mixture of H2 and heptane, Ni-MoO3 catalysts became active and selective for this reaction. The isomerization activity increased with increasing amount of Ni loading onto MoO3, indicating that Ni was an effective additive to enhance the catalytic performances of MoO3 for the isomerization of heptane.
Synthesis of β-Amino Esters by the Conjugate Addition of Nitrogen Nucleophiles to α,β-Unsaturated Esters Having Chiral p-Tolylsulfinyl Groups
Authors: Matsuyama Haruo , Itoh Nobuhiro , Yoshida Masato , Kamigata Nobumasa , Sasaki Sigeru , Iyoda Masahiko 
Published: June 2004

Abstract
The conjugate addition of nitrogen nucleophiles to t-butyl (E)-2-(p-tolylsulfinyl)cinnamates (1) afforded the corresponding chiral β-amino esters, which are important building blocks for synthesis of biologically active polyamine alkaloids. The diastereoselectivity of the reactions was 49 to 89%, and (S)-β-amino esters were obtained from (R)-1 while (R)-β-amino esters were synthesized from (S)-1, respectively.
Insertion of CO into a CH3-Pd Bond in a Heterodinuclear Complex (dpe)MePd-Co(CO)4. Preferential Insertion of Coordinated CO on a Cobalt Moiety
Authors: Fukuoka Atsushi , Fukagawa Sumiko , Hirano Masafumi , Komiya Sanshiro 
Published: June 2004

Abstract
A palladium-containing heterodinuclear complex (dpe)MePd-Co(CO)4 shows higher reactivity toward CO insertion than PdMeCl(dpe) and (dpe)MePt-Co(CO)4 to give an acetyl complex (dpe)AcPd-Co(CO)4. The insertion of CO ligand in Co(CO)4 is a kinetically favorable process.
Efficient Catalytic Hydrolysis of Disaccharides by Cerium(IV) Ion at pH 7
Authors: Ishida Hitoshi , Seri Kei-ichi 
Published: June 2004

Abstract
CeIV(NH4)2(NO3)6 effectively catalyses hydrolysis of various disaccharides such as sucrose, maltose, lactose, and cellobiose at pH 7.0, and activation energy for sucrose hydrolysis was found to be 14.4 kcal mol−1, which is remarkably smaller than that by 0.18 N HCl, 30 kcal mol−1.
Conformation and Redox Reaction of Poly(ethylene oxide)-modified Horseradish Peroxidase in Poly(ethylene oxide) Oligomers
Authors: Kawahara Natsue Y , Muneyasu Kuniaki , Ohno Hiroyuki 
Published: June 2004

Abstract
Horseradish peroxidase (HRP) was modified with poly(ethylene oxide) (PEO) with Mw of 750, 2000, or 5000. In PEO oligomer, the redox reaction of PEO-modified HRP at indium tin oxide electrode was clearly detected with both visible spectrometry and cyclic voltammetry.
Application of Chemiluminescent Probe to the Characterization of TiO2 Photocatalysts in Aqueous Suspension
Authors: Nosaka Yoshio , Fukuyama Hiroshi 
Published: June 2004

Abstract
A chemiluminescent probe, luminol, has been effectively applied to monitor the behavior of superoxide ions (O2•−) at photocatalytic reactions in aerated aqueous suspension of various commercially available TiO2 powders. By the addition of halide ions, the amount of O2•− increased or decreased depending on the properties of TiO2 powders. This difference is discussed with the difference in the mechanism of recombination via O2•− for the photoinduced electron-hole pairs.
Novel Lewis Acid Promoted Reactions of Allylsilane Bearing Bulky Silyl Substituents and Aldehydes
Authors: Akiyama Takahiko , Nakano Michiko , Kanatani Jun-ya , Ozaki Shoichiro 
Published: June 2004

Abstract
Reported herein are two novel modes of reactions that were mediated by the proper choice of Lewis acid. Thus, by the influence of SnCl4, allyl-t-butyldimethylsilane reacted with aldehyde in 2:1 stoichiometry to afford a ketone derivative. In contrast, use of BF3•OEt2 led to the formation of a 1,3-dioxane derivative, which is a 1:2 adduct.
Cathodic Oxidation of Sulfoxides to Sulfones Using a Tungstate/Pertungstate Redox Mediator
Authors: Li Wei , Nonaka Tsutomu 
Published: June 2004

Abstract
A new cathodic oxidation system for the oxidation of sulfoxides was developed. The system involves the cathodic reduction of dioxygen to hydrogen peroxide which oxidizes tungstate to pertungstate in the solution, and sulfoxides are oxidized to the corresponding sulfones with the resulting tungstate/ pertungstate redox mediator in high effiency and selectivity.
Highly Stereoselective Synthesis of 2′-Deoxy-α-ribonucleosides and 2-Deoxy-α-C-ribofuranosides by Remote Stereocontrolled Glycosylation
Authors: Mukaiyama Teruaki , Ishikawa Tatsuya , Uchiro Hiromi 
Published: June 2004

Abstract
A new and efficient method for catalytic highly α-selective N- and C-glycosylations of 2-deoxyribose derivative with various trimethylsilylated nucleophiles was successfully developed by utilizing effective remote stereocontrol with 5-O-diethylthio carbamoyl directing group. Several 2′-deoxy-α-ribonucleosides and precursors of its C-analogues were prepared in good yields with high stereoselectivities.
N-d-Biotinyl-7-amino-4-methylcoumarin as a Novel Fluorigenic Substrate for the Determination of Biotinidase Activity
Authors: Kunugi Shigeru , Nishino Norikazu , Mihara Hisakazu , Tandt Wilfried RDen , Scharpé Simon 
Published: June 2004

Abstract
A new fluorigenic substrate for the determination of biotinidase, N-d-biotinyl-7-amino-4-methylcoumarin has been synthesized by using BOP reagent. This substrate was used for measuring the enzyme activity in plasma of normal and biotinidase deficient patients. The methodology used here should be applicable to other biological fluids and homogenates to detect biotinidase deficiency.
Abiotic Asparagine Formation from Simple Amino Acids by Contact Glow Discharge Electrolysis
Authors: Munegumi Toratane , Shimoyama Akira , Harada Kaoru 
Published: June 2004

Abstract
Asparagine, one of the most important amino acids for prebiotic peptide formation in aqueous media, was formed using Contact Glow Discharge Electrolysis (CGDE) against aqueous solutions containing simple amino acids and carboxylic acid amides.
Diels-Alder Reactions of Fullerene C60 and 4-Hydroxytropones
Authors: Mori Akira , Takamori Yuuichi , Takeshita Hitoshi 
Published: June 2004

Abstract
7-Substituted 4-hydroxytropones reacted with C60 at 100 °C under 300 MPa to give two products; one was the adduct with a substituent on the bridge and the other the adduct with a substituent at the bridgehead position of the bicyclo[3.2.2]non-3-ene-2,6-dione system.
Colloid Formation from Vacuum Deposited Au Thin Layer on a UV-light Pre-exposed Polysilane Film
Authors: Nagayama Norio , Maeda Tomohiro , Yokoyama Masaaki 
Published: June 2004

Abstract
Vacuum deposited gold thin layer on a UV-light pre-exposed polysilane film underwent colloidal gold formation by heating. This process was found to accompany the degradation of polysilane by catalytic oxidation due to the formed colloidal gold. Such a phenomenon occurred in only the combination of polysilane and gold.
Difference in the Rate of Photo-induced Unimolecular Motion of Chiral Salicylideneamines in the Chiral Crystal Environments
Authors: Kawato Toshio , Koyama Hiroyuki , Kanatomi Hajime , Shigemizu Hideki 
Published: June 2004

Abstract
From the kinetic investigation on the photochromic process of chiral N-salicylidene-1-phenylethylamine it was revealed that the rate of unimolecular asymmetric motion was influenced by the neighboring asymmetric crystal environments.
Catalytic Stereoselective Synthesis of α-d-Galactopyranosides from 2,3,4,6-Tetra-O-benzyl-d-galactopyranose and Several Alcoholic Nucleophiles
Authors: Uchiro Hiromi , Miyazaki Kazuo , Mukaiyama Teruaki 
Published: June 2004

Abstract
The glycosylation reaction of several alcoholic nucleophiles with 2,3,4,6-tetra-O-benzyl-d-galactopyranose (1-hydroxy sugar) is successfully carried out by the combined use of Sn(OTf)2-Me3SiCl catalyst system and lithium perchlorate, an effective additive. Several α-d-galactopyranosides are obtained in good yields with high stereoselectivities.
Importance of the Glycerol Structure of C-Pivot Lariat Ethers Containing a 16-Crown-5 Ring for Effective Complexation toward Alkali Metal Cations
Authors: Kita Kohji , Kida Toshiyuki , Nakatsuji Yohji , Ikeda Isao 
Published: June 2004

Abstract
The effect of the skeletal structure of the pivot position of the C-pivot lariat ethers containing a 16-crown-5 ring on their complexation properties toward alkali metal cations was examined. The glycerol structure was found to be necessary for the effective coordination toward the potassium ion.
Synthesis and Metal-Binding Properties of Novel “Fullerenocrowns”
Authors: Ikeda Atsushi , Fukuhara Chie , Shinkai Seiji 
Published: June 2004

Abstract
“Fullerenocrowns” in which C60 carbons are directly included as a ring member in the crown ring were synthesized for the first time; the UV-Vis absorption spectra were sensitively changed by the addition of metal and ammonium cations.
Selective Catalytic Reduction of NO over PtMo Catalysts with Alkaline or Alkaline Earth Metal under Lean Static Conditions
Authors: Tanaka Toshiyuki , Yokota Koji , Doi Haruo , Sugiura Masahiro 
Published: June 2004

Abstract
The selective reduction of NO on various PtMoX-catalysts (X: Li, Na, K, Mg and Ca) loaded on metal oxides such as SiO2, Al2O3, TiO2, ZSM-5 and silicallite was studied in an oxygen-rich synthetic mixture simulated exhaust from an automotive lean-burn engine, and compared with that on PtMo/SiO2, PtNa/ SiO2, and Pt/SiO2 catalysts. The temperature window for the selective reduction of NOx on the PtMoLi-, PtMoNa- and PtMoK-catalysts was found to be remarkably wider and to shift to a higher temperature than that on the other catalysts under lean static conditions.
Large Third-Order Nonlinear Optical Susceptibilities of Multiply-Bonded M2(pyphos)4 and M2Pd2Cl2(pyphos)4 (M = Cr, Mo; Pyphos = 6-Diphenylphosphino-2-pyridonate) by Picosecond Degenerate Four-Wave Mixing Method
Authors: Mashima Kazushi , Tanaka Mitsuhiro , Kaneda Yutaka , Fukumoto Atsushi , Mizomoto Hitoshi , Tani Kazuhide , Nakano Hiroshi , Nakamura Akira , Sakaguchi Toru , Kamada Kenji , Ohta Koji 
Published: June 2004

Abstract
Multiply-bonded tetranuclear complexes M2Pd2Cl2(pyphos)4 (1) and dinuclear complexes M2(pyphos)4 (2)(a, M = Mo; b, M = Cr; pyphos = 6-diphenylphosphino-2-pyridonate) are found to exhibit large hyperpolarizability γ of nonlinear optical property by using the picosecond degenerate four-wave mixing (DFWM) method; the γ values of 1a (1.5 × 10−30 esu), 1b (5.2 × 10−31 esu), and 2a (6.9 × 10−31 esu) are greater than those (ca. 10−35—10−33 esu) of transition metal poly(yne) polymers.