bluuebunny/crossref_metadata_2025_split huggingface dataset:
Muscarinic acetylcholine receptors are expressed by most parvalbumin‐immunoreactive neurons in area MT of the macaque
Authors: Disney Anita A. , Alasady Hussein A. , Reynolds John H. 
Published: March 2014

AbstractBackgroundIn the mammalian neocortex, cells that express parvalbumin (PV neurons) comprise a dominant class of inhibitory neuron that substantially overlaps with the fast/narrow‐spiking physiological phenotype. Attention has pronounced effects on narrow‐spiking neurons in the extrastriate cortex of macaques, and more consistently so than on their broad‐spiking neighbors. Cortical neuromodulation by acetylcholine (ACh) is a candidate mechanism for aspects of attention and in the primary visual cortex (V1) of the macaque, receptors for ACh (AChRs) are strongly expressed by inhibitory neurons. In particular, most PV neurons in macaque V1 express m1 muscarinic AChRs and exogenously applied ACh can cause the release of γ‐aminobutyric acid. In contrast, few PV neurons in rat V1 express m1 AChRs. While this could be a species difference, it has also been argued that macaque V1 is anatomically unique when compared with other cortical areas in macaques.AimsThe aim of this study was to better understand the extent to which V1 offers a suitable model circuit for cholinergic anatomy in the macaque occipital lobe, and to explore cholinergic modulation as a biological basis for the changes in circuit behavior seen with attention.Materials and methodsWe compared expression of m1 AChRs by PV neurons between area V1 and the middle temporal visual area (MT) in macaque monkeys using dual‐immunofluorescence confocal microscopy.Results and conclusionWe find that, as in V1, most PV neurons in MT express m1 AChRs but, unlike in V1, it appears that so do most excitatory neurons. This provides support for V1 as a model of cholinergic modulation of inhibition in macaque visual cortex, but not of cholinergic modulation of visual cortical circuits in general. We also propose that ACh acting via m1 AChRs is a candidate underlying mechanism for the strong effects of attention on narrow‐spiking neurons observed in behaving animals.
Ambiguous goods and nebulous things
Authors: Slater Don 
Published: March 2014

ABSTRACTThe paper argues that ambiguity is not a property of objects but of the relationships of things to classifications and practices. Ambiguity is considered at two levels: firstly, the capacity of things to be subsumed within multiple but equally valid orders, and secondly, the capacity of social actors to articulate and act upon diverse beliefs about the nature of things and their proper relationship to classifications and practices. This opens up the idea of ‘social ontology’: how can we think about and research people's understandings of objects, and how they engage with ambiguity in everyday practices, both as a problem and as a resource and opportunity. Copyright © 2014 John Wiley & Sons, Ltd.
Disordering things
Authors: Denegri‐Knott Janice , Parsons Elizabeth 
Published: March 2014

ABSTRACTIn this paper, rather than approaching disorder as a problem, we see it as being pregnant with ambiguity that can potentially be a resource for new thinking and new ‘ordering’ work. We outline ways in which, within the domain of consumer behaviour, we can come to understand just how dirt, which is usually conceived as something destructive, can be productive. We focus on disorder, because in disordering things and in disorder, ambiguity becomes particularly visible, as a problem that is either confronted by mobilising an existing order or exploited to produce new ordering work. In this spirit, we explore ways in which disorder might be seen as suspended order, as destruction and as a state prior to order. In closing, we apply this thinking to the interpretive consumer research academy. We observe that through current reorderings and disorderings actioned in part through practice theory and actor network theoretical approaches, we are starting to glimpse the possibility of radicalising our research agenda once more. Copyright © 2014 John Wiley & Sons, Ltd.
Outcomes following cardiac catheterization after congenital heart surgery
Authors: Siehr Stephanie L. , Martin Mary Hunt , Axelrod David , Efron Bradley , Peng Lynn , Roth Stephen J. , Perry Stanton , Shin Andrew Y. 
Published: March 2014

ObjectivesDescribe outcomes following unplanned cardiac catheterization after congenital heart surgery.BackgroundUtility of cardiac catheterization following congenital heart surgery is relatively understudied.MethodsRetrospective study examining demographics, indications, and outcomes of unplanned cardiac catheterization after congenital heart surgery at a single institution.ResultsBetween October 2004 and April 2011, 120 patients underwent 150 unplanned postoperative cardiac catheterizations. Median day of catheterization was postoperative day 20 (range 1–269 days). Survival 30 days postcatheterization was 85%; overall survival to hospital discharge was 72%. Indications for catheterization: 63 for hemodynamic evaluation, 46 for likely intervention, and 41 for assessment of surgical repair. Of the 150 hemodynamic/interventional catheterizations, 103 (69%) were associated with a change in clinical management: 59 trans‐catheter interventions, 22 re‐operations, 11 changes in medication, six changes in surgical plan, and five withdrawals of support. Complications included hemorrhage in two patients, supraventricular tachycardia in two patients, and transient complete heart block requiring cardiopulmonary resuscitation in one patient.ConclusionsCardiac catheterization following congenital heart surgery may enable important diagnostic and therapeutic changes in clinical and surgical management. Complications were rare. © 2014 Wiley Periodicals, Inc.
ChemInform Abstract: Single‐Crystal Structures and Vibrational Spectra of Li[SCN] and Li[SCN]·2H2O.
Authors: Reckeweg Olaf , Schulz Armin , Blaschkowski Bjoern , Schleid Thomas , DiSalvo Francis J. 
Published: March 2014

AbstractLi[SCN]·2H2O (I) and its anhydrous form (II) crystallize in the orthorhombic space group Pnma with Z = 4 (single crystal XRD) and contain Li+ in sixfold coordination.
ChemInform Abstract: Polymorphism, Phase Transitions, and Thermal Expansion of K3Lu(PO4)2.
Authors: Farmer J. Matt , Boatner Lynn A. , Chakoumakos Bryan C. , Rawn Claudia J. , Mandrus David , Jin Rongying , Bryan Jeff C. 
Published: March 2014

AbstractSingle crystals of K3Lu(PO4)2 are prepared from mixtures of Lu2O3 and K4P2O7 (Pt crucible, 1508 K, 4 h).
ChemInform Abstract: Crystal Structure and Microwave Dielectric Properties of an Ultralow‐Temperature‐Fired (AgBi)0.5WO4 Ceramic.
Authors: Zhou Di , Pang Li‐Xia , Xie Hui‐Dong , Guo Jing , He Bin , Qi Ze‐Ming , Shao Tao , Yao Xi , Randall Clive A. 
Published: March 2014

AbstractDense (AgBi)0.5WO4 ceramics are prepared by solid state reaction of stoichiometric mixtures of Bi2O3, Ag2CO3, and WO3 (calcination at 500 °C for 4 h, sintering at about 580 °C for 2 h).
ChemInform Abstract: Improved Chemical Stability and Cyclability in Li2S—P2S5—P2O5 —ZnO Composite Electrolytes for All‐Solid‐State Rechargeable Lithium Batteries.
Authors: Hayashi Akitoshi , Muramatsu Hiromasa , Ohtomo Takamasa , Hama Sigenori , Tatsumisago Masahiro 
Published: March 2014

Abstract75Li2S‐ (25‐x)P2S5‐xP2O5 (0 ≤ x ≤ 10 mol%) sulfide glasses with high Li+ ion conductivity are prepared by planetary ball milling of the constituent compounds (510 rpm, 35 h).
ChemInform Abstract: Facile Synthesis of 2‐Fluoro‐1,3‐dicarbonyl Compounds with Aqueous Hydrofluoric Acid Mediated by Iodosylarenes.
Authors: Kitamura Tsugio , Kuriki Satoshi , Muta Kensuke , Morshed Mohammad Hasan , Muta Kazutaka , Gondo Keisuke , Hori Yuji , Miyazaki Masaya 
Published: March 2014

AbstractFluorination of 2‐substituted ethyl 2‐oxocyclohexanecarboxylate and diethylmalonate fail.
ChemInform Abstract: Organocatalytic Asymmetric Synthesis of Propargylamines with Two Adjacent Stereocenters: Mannich‐Type Reactions of in situ Generated C‐Alkynyl Imines with β‐Keto Esters.
Authors: Kano Taichi , Yurino Taiga , Maruoka Keiji 
Published: March 2014

AbstractThe stereoselective Mannich reaction of C‐alkynyl imines, generated in situ from aminals (I) and (VIII), with cyclic β‐keto esters is investigated in the presence of a chiral BINOL derived phosphoric acid.
ChemInform Abstract: N,N‐Dimethylformamide‐Stabilized Palladium Nanoclusters as Catalyst for Migita—Kosugi—Stille Cross‐Coupling Reactions.
Authors: Yano Hiroki , Nakajima Yui , Obora Yasushi 
Published: March 2014

AbstractThe title catalyst is stable in air and shows high catalytic activity for the cross‐coupling reactions of aryl halides with stannanes under ligand‐free conditions.
ChemInform Abstract: Synthesis of Alkyl Aryl(heteroaryl)acetates from N‐Oxides, 1,1‐Difluorostyrenes, and Alcohols.
Authors: Loska Rafal , Szachowicz Katarzyna , Szydlik Dorota 
Published: March 2014

AbstractA novel method for the selective functionalization of heterocyclic rings on a position adjacent to nitrogen is demonstrated.
ChemInform Abstract: Synthesis of gem‐Difluorocyclopropa(e)nes O‐, S‐, N‐, and P‐Difluoromethylated Compounds with TMSCF2Br.
Authors: Li Lingchun , Wang Fei , Ni Chuanfa , Hu Jinbo 
Published: March 2014

AbstractThis is a highly efficient method for the difluoromethylenation of C—C multiple bonds yielding difluorocyclopropane derivatives or the difluoromethylation of heteroatom nucleophiles.
ChemInform Abstract: An Efficient Protocol for Regioselective Ring Opening of Epoxides Using Sulfated Tungstate: Application in Synthesis of Active Pharmaceutical Ingredients Atenolol, Propranolol and Ranolazine.
Authors: Pathare Sagar P. , Akamanchi Krishnacharya G. 
Published: March 2014

AbstractIt is demonstrated that sulfated tungstate is a new efficient catalyst for the regioselective ring opening of epoxides by amines to give β‐amino alcohols including the pharmaceutical substances of title.
ChemInform Abstract: Visible‐Light‐Mediated Nucleophilic Addition of an α‐Aminoalkyl Radical to Isocyanate or Isothiocyanate.
Authors: Zhou Hongxia , Lu Ping , Gu Xiangyong , Li Pixu 
Published: March 2014

AbstractA visible‐light photoredox synthesis of α‐amino amides or α‐amino thioamides from N,N‐dimethylaniline derivatives and aryl isocyanates or aryl isothiocyanates is developed.
ChemInform Abstract: Conversion Between Difluorocarbene and Difluoromethylene Ylide.
Authors: Zheng Jian , Lin Jin‐Hong , Cai Ji , Xiao Ji‐Chang 
Published: March 2014

AbstractThe conversion of the difluoromethylene ylide precursor (II) to difluorocarbene is studied to enable the synthesis of difluorocyclopropenes (III) or the difluoromethyl substituted compounds (V), (VII) and (IX).
ChemInform Abstract: Palladium‐Catalyzed Asymmetric Hydrogenation of α‐Acyloxy‐1‐arylethanones.
Authors: Chen Jianzhong , Liu Delong , Butt Nicholas , Li Chao , Fan Dongyang , Liu Yangang , Zhang Wanbin 
Published: March 2014

AbstractThe first Pd‐catalyzed asymmetric hydrogenation of α‐acyloxy‐1‐arylethanones by using (R)‐DTBM‐SEGPHOS as ligand is developed.
ChemInform Abstract: Asymmetric Organocatalytic Cascade Michael/Hemiketalization/Retro‐Aldol Reaction of 2‐[(E)‐2‐Nitrovinyl]phenols with 2,4‐Dioxo‐4‐arylbutanoates: A Convenient Access to Chiral α‐Keto Esters.
Authors: Liu Yunting , Wang Youming , Song Haibin , Zhou Zhenghong , Tang Chuchi 
Published: March 2014

AbstractThe title reaction is optimized using a bifunctional tertiary amine‐squaramide as catalyst.
ChemInform Abstract: Copper‐Catalyzed Selective Single Arylsulfanylation of Aryl Diiodides with Aryl Thiols.
Authors: Liu Yunyun , Wang Hang , Cao Xiaoji , Fang Zheng , Wan Jie‐Ping 
Published: March 2014

AbstractThe title reaction gives rise to the formation of a broad array of iodine‐functionalized diarylsulfides (III) (22 examples).
ChemInform Abstract: Enantioselective Sulfonation of Enones with Sulfonyl Imines by Cooperative N‐Heterocyclic‐Carbene/Thiourea/Tertiary‐Amine Multicatalysis.
Authors: Jin Zhichao , Xu Jianfeng , Yang Song , Song Bao‐An , Chi Yonggui Robin 
Published: March 2014

AbstractThis is the first organocatalytic enantioselective synthesis of β‐sulfonyl ketones.
ChemInform Abstract: Palladium‐Catalyzed Suzuki—Miyaura Coupling of Aryl Sulfamates with Arylboronic Acids.
Authors: Wang Zhan‐Yong , Ma Qin‐Na , Li Ren‐Hao , Shao Li‐Xiong 
Published: March 2014

AbstractA newly synthesized NHC‐Pd(II)‐morpholine complex shows efficient catalytic activity toward Suzuki—Miyaura coupling of aryl sulfamates (I) with arylboronic acids (II) or potassium phenyltrifluoroborate (IV).
ChemInform Abstract: Palladium‐Catalyzed Cross‐Coupling of Cyclopropylmethyl N‐Tosylhydrazones with Aromatic Bromides: An Easy Access to Multisubstituted 1,3‐Butadienes
Authors: Yang Qin , Chai Huining , Liu Tingting , Yu Zhengkun 
Published: March 2014

Abstractthe title process affords 1,1‐disubstituted and 1,1,4‐trisubstituted 1,3‐butadienes
ChemInform Abstract: Recyclable L‐Proline Organocatalyst for Wieland—Miescher Ketone Synthesis.
Authors: Srivastava Vivek 
Published: March 2014

AbstractL‐Proline is found to be a suitable catalyst for the efficient and highly enantioselective intramolecular aldol condensation of triketone (I) in an ionic liquid to give the title compound (II).
ChemInform Abstract: Reaction of Tetrachlorinated Perylene Bisimide in a Strong Base to Form an Asymmetric Compound with Charge Transfer Optical Properties.
Authors: Zhang Wenqiang , Zhou Xuehong , Xie Zengqi , Yang Bing , Liu Linlin , Ma Yuguang 
Published: March 2014

AbstractThe optical properties of the compound (III) are investigated in CH2Cl2, hexane, and DMF.
ChemInform Abstract: Synthesis of 3‐Carbamoyl β‐Lactams via Manganese(III)‐Promoted Cyclization of N‐Alkenylmalonamides.
Authors: Punda Pawel , Ponikiewski Lukasz , Makowiec Slawomir 
Published: March 2014

AbstractThe title reaction affords trans‐products such as (II), (IV), (VII), and (VIII), exclusively.
ChemInform Abstract: Sulfur‐Assisted Domino Access to Bicyclic Dihydrofurans: Case Study and Early Synthetic Applications.
Authors: Paolella Concetta , D'Alonzo Daniele , Palumbo Giovanni , Guaragna Annalisa 
Published: March 2014

AbstractA DDQ‐mediated domino reaction, including six steps in a single process, is developed to selectively provide substituted dihydrofuran (III) from a common starting material (I) containing a cyclic bis‐thioenol ether.
ChemInform Abstract: Synthesis, Crystal Structure and Photochromic Properties of a New Unsymmetrical Diarylethene.
Authors: Fan Congbin , Cui Shiqiang , Pu Shouzhi , Huang Qianli , Liu Gang 
Published: March 2014

AbstractThe synthesized compound (III) dissolved in hexane or embedded in a poly(methylmethacrylate) amorphous film shows good fluorescence switching properties.
ChemInform Abstract: Copper‐Catalyzed One‐Pot Trifluoromethylation/Aryl Migration/Desulfonylation and C(sp2)—N Bond Formation of Conjugated Tosyl Amides.
Authors: Kong Wangqing , Casimiro Maria , Merino Estibaliz , Nevado Cristina 
Published: March 2014

AbstractThe reaction affords α‐aryl‐βtrifluoromethylamides with a quaternary stereocenter or trifluoromethylated oxindoles from the N‐aryl or N‐alkyl substrates of the types (I) or (X), respectively.
ChemInform Abstract: Cascade Palladium Catalysis: A Predictable and Selectable Regiocontrolled Synthesis of N‐Arylbenzimidazoles.
Authors: Jui Nathan T. , Buchwald Stephen L. 
Published: March 2014

AbstractA novel Pd‐catalyzed regioselective approach to N‐alkylbenzimidazoles is developed.
ChemInform Abstract: Asymmetric Access to the Smallest Enolate Intermediate via Organocatalytic Activation of Acetic Ester.
Authors: Chen Shaojin , Hao Lin , Zhang Yuexia , Tiwari Bhoopendra , Chi Yonggui Robin 
Published: March 2014

AbstractAn N‐heterocyclic carbene‐catalyzed activation of acetic esters to afford enolate intermediates is disclosed.
ChemInform Abstract: Enantioselective Oxidation of Alkenylbenzoates Catalyzed by Chiral Hypervalent Iodine(III) to Yield 4‐Hydroxyisochroman‐1‐ones.
Authors: Shimogaki Mio , Fujita Morifumi , Sugimura Takashi 
Published: March 2014

AbstractVarious hypervalent iodine(III) derivatives are screened for their catalytic activity in the title reaction.
ChemInform Abstract: Cu‐Catalyzed 1,2‐Dihydroisoquinolines Synthesis from o‐Ethynyl Benzacetals and Sulfonyl Azides.
Authors: Sun Lang , Zhu Yuanxun , Lu Ping , Wang Yanguang 
Published: March 2014

AbstractAn efficient synthesis of 1,3‐ and 1,1‐dialkoxy‐1,2‐dihydroisoquinolines from o‐ethynylbenzacetals and sulfonyl azides via a cascade process combining copper‐catalyzed alkyne—azide cycloaddition (CuAAC), Dimroth rearrangement, 1,5‐OR shift/1,5‐H shift, and 6π‐electrocyclic ring closure (6p‐ERC) is described.
ChemInform Abstract: Efficient Synthesis of Indolizines and New Imidazo[1,2‐a]pyridines via the Expected Cyclization of Aromatic Cycloimmonium Ylides with Electron Deficient Alkynes and Ethyl Cyanoformate.
Authors: Sandeep C. , Padmashali Basavaraj , Kulkarni Rashmi S. 
Published: March 2014

AbstractThe base‐mediated title cyclization reactions proceed at room temperature in short reaction times.
ChemInform Abstract: Benzyne‐Mediated Rearrangement of 3‐(2‐Pyridyl)‐1,2,4‐triazines into 10‐(1H‐1,2,3‐Triazol‐1‐yl)pyrido[1,2‐a]indoles.
Authors: Nikonov Igor L. , Kopchuk Dmitry S. , Kovalev Igor S. , Zyryanov Grigory V. , Khasanov Albert F. , Slepukhin Pavel A. , Rusinov Vladimir L. , Chupakhin Oleg N. 
Published: March 2014

AbstractSurprisingly, the treatment of triazines with benzyne generated in situ from 2‐aminobenzoic acid and isoamyl nitrite results in the formation of the title indole derivatives.
ChemInform Abstract: Three‐Step Synthesis of an Annulated β‐Carboline via Palladium Catalysis.
Authors: Mulcahy Seann P. , Varelas Jonathan G. 
Published: March 2014

AbstractThe incorporation of an additional fused ring onto β‐carboline via a novel palladium‐catalyzed, one‐pot Sonogashira coupling/intramolecular [2 + 2 + 2] cyclization is described.
ChemInform Abstract: Synthesis of Aryl Trimethylstannanes from Aryl Amines: A Sandmeyer‐Type Stannylation Reaction.
Authors: Qiu Di , Meng He , Jin Liang , Wang Shuai , Tang Shengbo , Wang Xi , Mo Fanyang , Zhang Yan , Wang Jianbo 
Published: March 2014

AbstractDiazotation of anilines in the presence of Me3SnSnMe3 results in a convenient synthesis of aryl trimethylstannanes.
ChemInform Abstract: First Stereoselective Total Synthesis of Triumfettamide.
Authors: Devi Thongam Joymati , Saikia Bishwajit , Barua Nabin C. 
Published: March 2014

AbstractThe concise and convergent synthesis of triumfettamide (I) involves Sharpless asymmetric dihydroxylation, Sharpless kinetic resolution, regioselective DIBAL‐H reduction of acetal, regioselective epoxide opening, and Wittig olefination as key steps.
ChemInform Abstract: Akaeolide, a Carbocyclic Polyketide from Marine‐Derived Streptomyces.
Authors: Igarashi Yasuhiro , Zhou Tao , Sato Seizo , Matsumoto Takashi , Yu Linkai , Oku Naoya 
Published: March 2014

AbstractAkaeolide (I), a novel polycyclic polyketide, is isolated from the culture extract of a marine‐derived actinomycete belonging to the genus Streptomyces.
ChemInform Abstract: Crooked Ag2Te Nanowires with Rough Surfaces: Facile Microwave‐Assisted Solution Synthesis, Growth Mechanism, and Electrical Performances.
Authors: Pei Jian , Chen Gang , Jia Dechang , Yu Yaoguang , Sun Jingxue , Xu Haiming , Qiu Zhuangzhuang 
Published: March 2014

AbstractThe title nanowires are synthesized from an ethylene glycol solution of AgNO3, Na2TeO3, and NaOH, which is microwave‐heated rapidly to 190 °C and maintained at this temperature for 15 min.
ChemInform Abstract: Tidbits for the Synthesis of Bis(2‐sulfanylethyl)amido (SEA) Polystyrene Resin, SEA Peptides and Peptide Thioesters
Authors: Ollivier Nathalie , Raibaut Laurent , Blanpain Annick , Desmet Remi , Dheur Julien , Mhidia Reda , Boll Emmanuelle , Drobecq Herve , Pira Silvain L. , Melnyk Oleg 
Published: March 2014

AbstractReview: 47 refs.
Efficient environment management for distributed simulation of large‐scale situated multi‐agent systems
Authors: Cicirelli Franco , Giordano Andrea , Nigro Libero 
Published: March 2014

SummaryMulti‐agent systems have been proven very effective for the modelling and simulation (M&S) of complex systems like those related to biology, engineering, social sciences and so forth. The intrinsic spatial character of many such systems leads to the definition of a situated agent. A situated agent owns spatial coordinates and acts and interacts with its peers in a hosting territory. In the context of parallel/distributed simulation of situated agent models, the territory represents a huge shared variable that requires careful handling. Frequent access by agents to territory information easily becomes a bottleneck degrading system performance and scalability. This paper proposes an original approach to modelling and distributed simulation of large‐scale situated multi‐agent systems. Time management is exploited for resolving conflicts and achieving data consistency while accessing the environment. The approach allows a simplification of the M&S tasks by making the modeller unaware of distribution concerns while ensuring the achievement of good scalability and performance during the distributed simulation. Practical aspects of the approach are demonstrated through some modelling examples based on Tileworld. Copyright © 2014 John Wiley & Sons, Ltd.
Cucurbituril‐Based Supramolecular Self‐Assemblies Formed in the Presence of Alkali Metal and Cadmium Ions
Authors: Cong Hang , Zhao Yi , Liang Li‐Li , Chen Kai , Chen Xiao‐Jie , Xiao Xin , Zhang Yun‐Qian , Zhu Qian‐Jiang , Xue Sai‐Feng , Tao Zhu 
Published: March 2014

AbstractIn the present work, we describe four previously unreported cucurbituril‐based coordination supramolecular self‐assemblies, formed in the presence of alkali metal and cadmium ions. Unexpectedly, in the presence of potassium or rubidium and cadmium cations, cucurbituril prefers to coordinate with cadmium to form three dimensional frameworks. The alkali metal ions seem to play a role of structure inducer in HCl medium and are not present in the final structures. In neutral aqueous solution, cadmium cations also show stronger coordination to cucurbituril and form one‐dimensional supramolecular chains through static electronic interactions. When the alkali metal ion is sodium in HCl solution, sodium ions show stronger coordination to cucurbituril and form one‐dimensional coordination polymers. [CdCl4]2– anions link the linear polymers through static electronic interactions between coordinated chloride anions and sodium cations, which results in the formation of two‐dimensional networks.
Magnetic Studies of Redox‐Active Tetrathiafulvalene‐Based Complexes: Dysprosium vs. Ytterbium Analogues
Authors: Jung Julie , da Cunha Tamyris T. , Le Guennic Boris , Pointillart Fabrice , Pereira Cynthia L. M. , Luzon Javier , Golhen Stéphane , Cador Olivier , Maury Olivier , Ouahab Lahcène 
Published: March 2014

AbstractThe two mononuclear complexes [Ln(tta)3(L)]·C6H14 {Ln = DyIII and YbIII} (tta– = 2‐thenoyltrifluoroacetonate, L = 2‐{1‐methylpyridyl‐4,5‐[4,5‐bis(propylthio)tetrathiafulvalenyl]‐1H‐benzimidazol‐2‐yl}pyridine) are isostructural. The lanthanide ions adopt a distorted‐square‐antiprism coordination polyhedron (D4d symmetry). The DyIII compound behaves like a single‐molecule magnet (SMM), whereas no out‐of‐phase component of the magnetic susceptibility is measured for YbIII. The crystal‐field splitting of the 2F7/2 and 6H15/2 ground multiplets of YbIII and DyIII, respectively, were determined by means of ab initio calculations and confirmed by the emission energy lines of the 2F5/2→2F7/2 luminescence spectrum in the case of YbIII. The nature of the MJ ground states indicates that YbIII is not an Ising system, whereas DyIII is. The experimental and calculated anisotropy axes for DyIII lie along the most negatively charged direction, whereas those for YbIII lie almost perpendicularly. Finally, the gz values corroborate the uniaxiality of the anisotropy axis for DyIII.