bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pentiptycene‐Derived Light‐Driven Molecular Brakes: Substituent Effects of the Brake Component
Authors: Sun Wei‐Ting , Huang Yau‐Ting , Huang Guan‐Jhih , Lu Hsiu‐Feng , Chao Ito , Huang Shou‐Ling , Huang Shing‐Jong , Lin Ying‐Chih , Ho Jinn‐Hsuan , Yang Jye‐Shane 
Published: September 2010

AbstractFive pentiptycene‐derived stilbene systems (1 R; R=H, OM, NO, Pr, and Bu) have been prepared and investigated as light‐driven molecular brakes that have different‐sized brake components (1 H<1 OM<1 NO<1 Pr<1 Bu). At room temperature (298 K), rotation of the pentiptycene rotor is fast (krot=108–109 s−1) with little interaction with the brake component in the trans form ((E)‐1 R), which corresponds to the brake‐off state. When the brake is turned on by photoisomerization to the cis form ((Z)‐1 R), the pentiptycene rotation can be arrested on the NMR spectroscopic timescale at temperatures that depend on the brake component. In the cases of (Z)‐1 NO, (Z)‐1 Pr, and (Z)‐1 Bu, the rotation is nearly blocked (krot=2–6 s−1) at 298 K. It is also demonstrated that the rotation is slower in [D6]DMSO than in CD2Cl2. A linear relationship between the free energies of the rotational barrier and the steric parameter A values is present only for (Z)‐1 H, (Z)‐1 OM, and (Z)‐1 NO, and it levels off on going from (Z)‐1 NO to (Z)‐1 Pr and (Z)‐1 Bu. DFT calculations provide insights into the substituent effects in the rotational ground and transition states. The molar reversibility of the E–Z photoswitching is up to 46 %, and both the E and Z isomers are stable under the irradiation conditions.
Recent Strategies for the Synthesis of Pyridine Derivatives
Authors: Hill Matthew D. 
Published: September 2010

AbstractRecent advances in pyridine synthesis are described. Modification of traditional condensation strategies continues to be a recurrent theme in contemporary literature. Advancements in transition‐metal‐catalyzed cyclization and cross‐coupling procedures offer new routes to functionalized pyridine derivatives. These recently developed methodologies are a valuable addition to azaheterocycle synthesis.
The Versatile Coordination Modes of Monophosphine‐o‐Carborane in the Formation of Iridium and Rhodium Complexes: Synthesis, Reactivity, and Characterization
Authors: Huo Xian‐Kuan , Su Ge , Jin Guo‐Xin 
Published: September 2010

AbstractMonophosphine‐o‐carborane has four competitive coordination modes when it coordinates to metal centers. To explore the structural transitions driven by these competitive coordination modes, a series of monophosphine‐o‐carborane Ir,Rh complexes were synthesized and characterized. [Cp*M(Cl)2{1‐(PPh2)‐1,2‐C2B10H11}] (M=Ir (1 a), Rh (1 b); Cp*=η5‐C5Me5), [Cp*Ir(H){7‐(PPh2)‐7,8‐C2B9H11}] (2 a), and [1‐(PPh2)‐3‐(η5‐Cp*)‐3,1,2‐MC2B9H10] (M=Ir (3 a), Rh (3 b)) can be all prepared directly by the reaction of 1‐(PPh2)‐1,2‐C2B10H11 with dimeric complexes [(Cp*MCl2)2] (M=Ir, Rh) under different conditions. Compound 3 b was treated with AgOTf (OTf=CF3SO3−) to afford the tetranuclear metallacarborane [Ag2(thf)2(OTf)2{1‐(PPh2)‐3‐(η5‐Cp*)‐3,1,2‐RhC2B9H10}2] (4 b). The arylphosphine group in 3 a and 3 b was functionalized by elemental sulfur (1 equiv) in the presence of Et3N to afford [1‐{(S)PPh2}‐3‐(η5‐Cp*)‐3,1,2‐MC2B9H10] (M=Ir (5 a), Rh (5 b)). Additionally, the 1‐(PPh2)‐1,2‐C2B10H11 ligand was functionalized by elemental sulfur (2 equiv) and then treated with [(Cp*IrCl2)2], thus resulting in two 16‐electron complexes [Cp*Ir(7‐{(S)PPh2}‐8‐S‐7,8‐C2B9H9)] (6 a) and [Cp*Ir(7‐{(S)PPh2}‐8‐S‐9‐OCH3‐7,8‐C2B9H9)] (7 a). Compound 6 a further reacted with nBuPPh2, thereby leading to 18‐electron complex [Cp*Ir(nBuPPh2)(7‐{(S)PPh2}‐8‐S‐7,8‐C2B9H10)] (8 a). The influences of other factors on structural transitions or the formation of targeted compounds, including reaction temperature and solvent, were also explored.
Hydrogen‐Atom Abstraction from Methane by Stoichiometric Vanadium–Silicon Heteronuclear Oxide Cluster Cations
Authors: Ding Xun‐Lei , Zhao Yan‐Xia , Wu Xiao‐Nan , Wang Zhe‐Chen , Ma Jia‐Bi , He Sheng‐Gui 
Published: September 2010

AbstractVanadium–silicon heteronuclear oxide cluster cations were prepared by laser ablation of a V/Si mixed sample in an O2 background. Reactions of the heteronuclear oxide cations with methane in a fast‐flow reactor were studied with a time‐of‐flight (TOF) mass spectrometer to detect the cluster distribution before and after the reactions. Hydrogen abstraction reactions were identified over stoichiometric cluster cations [(V2O5)n(SiO2)m]+ (n=1, m=1–4; n=2, m=1), and the estimated first‐order rate constants for the reactions were close to that of the homonuclear oxide cluster V4O10+ with methane. Density functional calculations were performed to study the structural, bonding, electronic, and reactivity properties of these stoichiometric oxide clusters. Terminal‐oxygen‐centered radicals (Ot.) were found in all of the stable isomers. These Ot. radicals are active sites of the clusters in reaction with CH4. The Ot. radicals in [V2O5(SiO2)1–4]+ clusters are bonded with Si rather than V atoms. All the hydrogen abstraction reactions are favorable both thermodynamically and kinetically. This work reveals the unique properties of metal/nonmetal heteronuclear oxide clusters, and may provide new insights into CH4 activation on silica‐supported vanadium oxide catalysts.
Sulfur Ylide Promoted Synthesis of N‐Protected Aziridines: A Combined Experimental and Computational Approach
Authors: Dokli Irena , Matanović Ivana , Hameršak Zdenko 
Published: September 2010

AbstractA range of N‐protected aziridines [N‐Tosyl (N‐Ts), N‐2‐trimethylsilylethanesulfonamide (N‐SES), N‐tert‐butoxycarbonylamido (N‐Boc), and N‐o‐nitrobenzenesulfonamide (oNs)] were prepared in moderate to good yield and with high enantiomeric excess of both isomers starting from N‐protected imines, using a sulfonium salt derived from Eliel’s oxathiane. The diastereoselectivities of the reactions are influenced by the imine N‐protecting group, the imine substituent, and the sulfide structure. An unusual cis selectivity was observed in the formation of N‐tosyl‐2‐phenyl‐3‐tert‐butylaziridine and N‐o‐trimethylsilylethanesulfonamide‐2‐phenyl‐3‐tert‐butylaziridine, which was explained by using computational models. The analysis suggests that betaine formation in the case of N‐tosyl‐tert‐butylaldimine aziridination using oxathiane benzyl sulfonium ylide 1′ is reversible and that the selectivity is determined at the rotation step, which is unusual for semistabilized ylide aziridination. We have shown herein that the steric bulk of an imine substituent, in combination with a sterically demanding sulfonium ylide, can also affect the reversibility of the reaction. This is the first example of this sort involving aziridinations using semistabilized ylides.
Post‐Synthetic Reversible Incorporation of Organic Linkers into Porous Metal–Organic Frameworks through Single‐Crystal‐to‐Single‐Crystal Transformations and Modification of Gas‐Sorption Properties
Authors: Park Hye Jeong , Cheon Young Eun , Suh Myunghyun Paik 
Published: September 2010

AbstractThe porous metal–organic framework (MOF) {[Zn2(TCPBDA)(H2O)2]⋅30 DMF⋅6 H2O}n (SNU‐30; DMF=N,N‐dimethylformamide) has been prepared by the solvothermal reaction of N,N,N′,N′‐tetrakis(4‐carboxyphenyl)biphenyl‐4,4′‐diamine (H4TCPBDA) and Zn(NO3)2⋅6 H2O in DMF/tBuOH. The post‐synthetic modification of SNU‐30 by the insertion of 3,6‐di(4‐pyridyl)‐1,2,4,5‐tetrazine (bpta) affords single‐crystalline {[Zn2(TCPBDA)(bpta)]⋅23 DMF⋅4 H2O}n (SNU‐31 SC), in which channels are divided by the bpta linkers. Interestingly, unlike its pristine form, the bridging bpta ligand in the MOF is bent due to steric constraints. SNU‐31 can be also prepared through a one‐pot solvothermal synthesis from ZnII, TCPBDA4−, and bpta. The bpta linker can be liberated from this MOF by immersion in N,N‐diethylformamide (DEF) to afford the single‐crystalline SNU‐30 SC, which is structurally similar to SNU‐30. This phenomenon of reversible insertion and removal of the bridging ligand while preserving the single crystallinity is unprecedented in MOFs. Desolvated solid SNU‐30′ adsorbs N2, O2, H2, CO2, and CH4 gases, whereas desolvated SNU‐31′ exhibits selective adsorption of CO2 over N2, O2, H2, and CH4, thus demonstrating that the gas adsorption properties of MOF can be modified by post‐synthetic insertion/removal of a bridging ligand.
ChemInform Abstract: 77Se NMR Identification of Seven‐Membered Selenium Sulfide Ring Molecules.
Authors: PEKONEN P. , LAITINEN R. S. , HILTUNEN Y. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Variants of the MgCu2 Type: The Compounds Mg2Ni3P and Mg2Ni3As.
Authors: KEIMES V. , MEWIS A. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Niobium Silicophosphate Belonging to the Niobium Phosphate Bronze Series: K4Nb8P4SiO34.
Authors: LECLAIRE A. , BOREL M. M. , CHARDON J. , GRANDIN A. , RAVEAU B. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Structure Refinement of the Semi‐Metallic Oxide SrTl2O4: A Neutron Diffraction Study
Authors: MICHEL C. , HERVIEU M. , CAIGNAERT V. , RAVEAU B. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Local Coordination of Copper in Sr2CuO3 and Sr2CuO4‐x, x ≅0. 1: A Study by Extended X‐Ray Absorption Fine Structure.
Authors: BERRY F. J. , GREAVES C. , LOBO R. C. , STRANGE R. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Distribution of Carbon Atoms on the Boron Carbide Structure Elements
Authors: KUHLMANN U. , WERHEIT H. , SCHWETZ K. A. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Performance of Single Cells of an Alkali Metal Thermoelectric Converter
Authors: KNOEDLER R. , BOSSMANN H.‐P. , KRANZMANN A. , HARBACH F. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Corrosion Resistant Coating for a Positive Lead/Acid Battery Electrode.
Authors: KAO W.‐H. , HABERICHTER S. L. , BULLOCK K. R. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Effect of Alloying on Anode Passivation in the Ca/SOCl2 Battery.
Authors: DOWNEY S. B. , DEVEREUX O. F. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Mordenite Acidity: Dependence on the Si/Al Ratio and the Framework Aluminum Topology. Part 1. Sample Preparation and Physicochemical Characterization.
Authors: STACH H. , JAENCHEN J. , JERSCHKEWITZ H.‐G. , LOHSE U. , PARLITZ B. , ZIBROWIUS B. , HUNGER M. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Laser‐Induced Interaction of Ammonia with GaAs(100). Part 1. Dissociation and Nitridation.
Authors: ZHU X.‐Y. , WOLF M. , HUETT T. , WHITE J. M. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Preparation and Structure of (SeCl2)2N+AsF6‐×MeCN Containing the First Ternary Selenium, Nitrogen, Chlorine Cation.
Authors: BROSCHAG M. , KLAPOETKE T. M. , TORNIEPORTH‐OETTING I. C. , WHITE P. S. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: LiBa4(Mo2N7)×BaCl2: Dimeric Anions (Mo2N7)9‐ by Condensation Reaction of Ba3(MoN4) in LiCl Melts.
Authors: GUDAT A. , KNIEP R. , MAIER J. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Preparation and Structure of (Ph3P)2N(WSF5).
Authors: HILBERS M. , LAEGE M. , MATTES R. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Hydrazinium Ion Coordinating Trivalent Rhenium in (NH4)0.5(H2O)0.5( Re3Cl10(N2H5)Cl0.5(H2O)0.5)×3 H2O.
Authors: MOELLER A. , MEYER G. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Assignment of the 290‐nm Electronic Band System of Indazole (1,2‐ Benzodiazole) as π*‐π by Rotational Band Contour Analysis.
Authors: CANE E. , TROMBETTI A. , VELINO B. , CAMINATI W. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: High‐Resolution Spectroscopy of Methyl Isocyanide: The ν4 Fundamental and Ground State Constants.
Authors: HE C. , BERNHEIM R. A. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: High‐Pressure Raman Spectroscopic Study of Cyclohexane C6H12 and C6D12.
Authors: CRAIN J. , POON W. C.‐K. , CAIRNS‐SMITH A. , HATTON P. D. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Time‐Resolved Electron Paramagnetic Resonance Spectroscopy in the Q‐ Band Microwave Region
Authors: FORBES M. D. E. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Atropisomerism in Natural Products. Absolute Stereochemistry of Biflavone, (‐)‐4′,4′′′,7,7′′‐Tetra‐O‐methylcupressuflavone, as Determined by the Theoretical Calculation of CD Spectra
Authors: HARADA N. , ONO H. , UDA H. , PARVEEN M. , KHAN N. U.‐D. , ACHARI B. , DUTTA P. K. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Conformation of the Ethoxy Group in 4‐Ethoxy‐4′‐cyanobiphenyl
Authors: EMSLEY J. W. , HORNE T. J. , CELEBRE G. , LONGERI M. , ZIMMERMANN H. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Conformation of 1,2‐Dimethoxyethane in the Gas Phase: A Rotational Isomeric State Simulation of NMR Vicinal Coupling Constants.
Authors: INOMATA K. , ABE A. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Conformational Analysis. Part 19. 1,2‐Dichlorotetrafluoroethane. Molecular Structure, Composition, Anti‐Gauche Energy and Entropy Differences, and Quadratic Force Field: An Electron‐Diffraction and ab initio Study.
Authors: THOMASSEN H. , HEDBERG K. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Thermodynamics of Flow and Vaporization Processes in Long‐Chain Liquids.
Authors: KISHORE K. , SHOBHA H. K. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Photoelectrocatalytic Reduction of Oxygen at Chemically Modified Electrodes Using Ruthenium(II) and Cobalt(III) Complexes.
Authors: GOBI K. V. , RAMARAJ R. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Films of Poly(pyrrole‐(RuII(bpy)2Cl2)). Their Transformations into Films Containing cis‐ or trans‐(RuII(bpy)2(H2O)2)2+, (RuII(bpy)2(MeCN) 2)2+, and ((RuIII(bpy)2(H2O))2O)4+ Complexes, Application to Electrocatalysis (bpy = 2,2′‐bipyridine).
Authors: DE GIOVANI W. F. , DERONZIER A. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Use of 1,3‐Dioxin‐4‐ones and Related Compounds in Synthesis. Part 41. Aldol Reaction of 4‐Trimethylsiloxy‐6‐methylene‐1,3‐dioxines with Chiral Aldehydes: Enantioselective Synthesis of 1,3‐Dioxin‐4‐ones Having a 2,3‐Dihydroxylated Alkyl Group at the 6‐Position.
Authors: SATO M. , SUGITA Y. , ABIKO Y. , KANEKO C. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Baker′s Yeast Induced Asymmetric Reduction of the Keto Group Activated by the Cyclopropane Unit.
Authors: TKACHEV A. V. , RUKAVISHNIKOV A. V. , GATILOV YU. V. , BAGRJANSKAJA I. YU. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Reduction of Phenyl Ketones by Immobilized Bakers′ Yeast.
Authors: SORRILHA A. E. P. M. , MARQUES M. , JOEKES I. , MORAN P. J. S. , RODRIGUES J. A. R. 
Published: September 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.