bluuebunny/crossref_metadata_2025_split huggingface dataset:
Über Diphenyl‐dihydro‐pentalene
Authors: Ciorânescu Ecaterina , Bucur Aurora , Mihai Gheorghe , Mateescu Gheorghe , Nenitzescu Costin D. 
Published: May 2007

AbstractBei der Umsetzung von Cyclopentadien mit Benzalacetophenon entstehen, je nach den Reaktionsbedingungen, ein Diels‐Alder‐Addukt, das Produkt einer Michael‐Kondensation oder zwei rote Kohlenwasserstoffe, welche als zwei isomere Diphenyl‐dihydro‐pentalene erkannt wurden.
Über Lithium‐diäthylamid als Hydrid‐Donator
Authors: Wittig George , Schmidt Hans Jürgen , Renner Hannelore 
Published: May 2007

AbstractLithium‐diäthylamid bildet mit Benzophenon im Sinne eines Vierzentrenprozesses über den at‐Komplex Ii Lithiumbenzhydrolat und Äthyliden‐äthylamin (III), das mit noch vorhandenem Benzophenon eine Aldoladdition zur isolierten Schiffschen Base VI eingeht. Mit dem Befund, daß Lithium‐diäthylamid als Hydrid‐Donator fungieren kann, wird die Entstehung von α‐Phenyldiäthylamin (X) bei Umsetzung von Fluorbenzol mit Lithium‐diäthylamid verständlich; dieses reagiert mit intermediär auftretendem Dehydrobenzol über den at‐Komplex IX zu III und Phenyllithium, die sich zum gefundenen X vereinigen.
Acyl‐lacton‐Umlagerung, XXI. Synthese von N‐Methyl‐anabasein, N‐Methyl‐anabasin, und deren Isomeren
Authors: Büchel Karl Heinz , Korte Friedhelm 
Published: May 2007

AbstractDurch Claisen‐Kondensation von N‐Methyle‐piperidon‐(2) mit aromatischen Estern werden α‐Aroyl‐N‐Methyl‐piperidone erhalten. Durch Erhitzen in konz. Salzsäure lagern sich diese unter Decarboxylierung in 2‐ARryl‐tetrahydropyridine um, die sich leicht zu Piperidinderivaten hydrierern lassen. N‐Methyl‐anabasein, N‐Methyl‐anabasin und isomere Verbindungen werden nach diesem Reaktions‐schema in guten Ausbeuten dargestellt.
Acyl‐lacton‐Umlagerung, XXIV. Synthese von Schierlingsalkaloiden nach dem Reaktionsprinzip der Acyl‐lacton‐Umlagerung
Authors: Büchel Karl Heinz , Korte Friedhelm 
Published: May 2007

AbstractN‐Substituierte Piperidone‐(2) werden mit aliphatischen Carbonsäureestern kondensiert. Durch Umlagerung von α‐Butyryl‐piperidonen in konz. Salzsäure erhält man z. B. die Schierlingsalkaloide γ‐Conicein und N‐Methyl‐γ‐conicein, die in saurer Lösung katalytisch zu d,l‐Coniin und d,l‐N‐Methyl‐coniin hydriert werden.
Acyl‐lacton‐Umlagerung, XXV. Die Umlagerung von α‐Hydroxymethylen‐lactamen
Authors: Büchel Karl Heinz , Korte Friedhelm 
Published: May 2007

AbstractDurch Umalgerung von α‐Hydroxymethylen‐N‐methyl‐piperidon‐(2) wird infolge Dimerisierung der Zwischenstufe N‐Methyl‐Δ2‐piperidein das bekannte N.N′‐Dimethyl‐tetrahydroanabasin erhalten.
Über Phosphin‐alkylene als olefinbildende Reagenzien, VI. Zur Synthese von Alkyl‐ und Aryl‐vinyläthern auf der Phosphylen‐Basis
Authors: Wittig Georg , Böll Walter , Krück Karl‐Heinrich 
Published: May 2007

AbstractDa die Methoxymethylenierung von Carbonylverbindungen auf der Phosphylen‐Basis für die Synthese homologer Aldehyde bedeutungsvoll erscheint, wurde sie eingehender untersucht. Hierbei stellte sich heraus, daß die Versuchsbedingungen auch bei Einbeziehung der Butoxymethylenierung jeweilig auf die Carbonylpartner abgestimmt werden müssen. Dagegen liefern die entsprechenden Triphenylphosphin‐aryloxymehtylene (IV) in durchweg hohen Ausbeuten die zugehörigen Arylvinyläther, die sich zweckmäßig mit ätherische Perchlorsäure in die gewünschten Aldehyde überführen lassen.
Die Bildung von Arylalkyläthern nach der Carbodiimidmehtode
Authors: Vowinkel Erich 
Published: May 2007

AbstractDicyclohexylcarbodiimid reagiert mit freien Phenolen und primären Alkoholen unter Bildung von Arylalkyläthern. Die Methode ist in Vielen Fällen anwendbar; gegenüber sterischer Hinderung ist sie empfindlich.
Über Silikone, LX. Tetramethyl‐cyclodisilmethylen, eine von Doppelbindungen freie Verbindung der Summenformel C6H16Si2
Authors: Müller Richard , Köhne Rolf , Beyer Horst 
Published: May 2007

AbstractG. Fritz und J. Grobe beschreiben eine linear gebaute Verbindung (C6H16Si2) mit einer Si‐ C‐Doppelbindung, (CH3)2Si; CH. Si(CH3)3, die sie aus Pyrolyseprodukten des Si(CH3(4 gewonnen haben. Es wurde eine Verbindung mit der gleichen Zusammensetzung und den gleichen physikalischen und chemischen Eigenschaften erhalten, der auf Grund ihrer Darstellung aus Brommethyl‐ dimethyl‐chlorsilan und Magnesium jedoch Vierring‐Struktur (VI) ohne Doppelbindung zukommen muß.
Zur Kenntnis der Imido‐diphosphonsäuren und ihrer Derivate, II. Imido‐tetraphenyl‐diphosphinsäure und ihr Trichlorid
Authors: Fluck Ekkehard , Goldmann Friedrich Ludwig 
Published: May 2007

Abstract(C6H5)2 PCl3 und NH4Cl3 reagieren in Tetrachloräthan zu Imido‐tetraphenyl‐diphosphinsäure‐trichlorid (II). Durch partielle Hydrolyse von II entsteht Imidotetraphenyl‐diphosphinsäure (III).
Addukte von Antimon(V)‐chlorid und Chlorwasserstoff an Halogencyane
Authors: Allenstein Eckhard , Schmidt Armin 
Published: May 2007

AbstractDurch Umsetzung von Chlor‐, Brom‐ und Jodcyan mit Antimon(V)‐chlorid werden Addukte im Molverhältnis 1 : 1 erhalten, deren IR‐Spektren die Bindung der Ansolvosäure über das freie Elektronenpaar des Cyanstickstoffs wahrscheinlich machen. Bei Umsetzung dieser Addukte mit trockenem Chlorwasser stoff werden zwei Moll. Chlorwasserstoff aufgenommen. Die IR‐Spektren dieser Verbindungen ergeben, daß sich Dihalogen‐formimidium‐hexachloroantimonate(V) der Form II gebildet haben.
Structure and Properties of Gd4Pd10In21.
Authors: Latka Kazimierz , Rams Michal , Kmiec Roman , Pacyna Andrzej W. , Zaremba Vasyl' I. , Rodewald Ute Ch. , Poettgen Rainer 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Ag5PS4Cl2 and Ag15(PS4)4Cl3 — Crystal Structures and Their Relation to Ag3PS4.
Authors: Joergens Stefan , Mewis Albrecht 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The Crystal Structures of the Equiatomic TT′X Compounds (T: Ti, Zr, Hf; T′: Au, Pt, Pd; X: Al, Ga).
Authors: Verbovytsky Yu. , Latka K. 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Ultraslow Li Diffusion in Spinel‐Type Structured Li4Ti5O12 — A Comparison of Results from Solid State NMR and Impedance Spectroscopy.
Authors: Wilkening Martin , Amade Roger , Iwaniak Wojciech , Heitjans Paul 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Polymorphism, Structural Frustration, and Electrical Properties of the Mixed Conductor Ag10Te4Br3.
Authors: Lange Stefan , Bawohl Melanie , Wilmer Dirk , Meyer Hinrich‐Wilhelm , Wiemhoefer Hans‐Dieter , Nilges T. 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Phase Equilibria in the Gd—Bi—Sb Ternary System at Room Temperature
Authors: Jian Y. X. , Li J. Q. , Liu F. S. , Ao W. Q. 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Indium‐Catalyzed Radical Reductions of Organic Halides with Hydrosilanes.
Authors: Miura Katsukiyo , Tomita Mitsuru , Yamada Yusuke , Hosomi Akira 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Deprotection of Acetals and Ketals in a Colloidal Suspension Generated by Sodium Tetrakis(3,5‐trifluoromethylphenyl)borate in Water.
Authors: Chang Chih‐Ching , Liao Bei‐Sih , Liu Shiuh‐Tzung 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
An Expedient Approach to the Synthesis of Chloroacetic, Dichloroacetic and Acetic Acid Catalyzed by Sulfuric Acid in the Presence of Crown Ethers.
Authors: Perveen Shahnaz , Sarfaraz Tahira B. , Khan Khalid M. , Voelter Wolfgang 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Oxidative‐Substituted Reactions of Electron‐Rich Aromatic Compounds with BF3‐Activated Iodonium Ylides.
Authors: Telu Sanjay , Durmus Semih , Koser Gerald F. 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of Novel Quinone—Amino Acid Hybrids via Cross‐Enyne Metathesis and Diels—Alder Reaction as Key Steps.
Authors: Kotha Sambasivarao , Mandal Kalyaneswar , Banerjee Shaibal , Mobin Shaikh M. 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Copper‐Catalyzed Asymmetric [4 + 1] Cycloadditions of Enones with Diazo Compounds to Form Dihydrofurans.
Authors: Son Sunghee , Fu Gregory C. 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Selective Palladium‐Catalyzed ipso Arylation of α,α‐Disubstituted Benzo[b]thien‐2‐ylmethanols with Aryl Bromides Using PCy3 as Ligand.
Authors: Biro A. Beatrix , Kotschy Andras 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Highly Diastereoselective, Catalytic Three‐Component Assembly Reaction for the Synthesis of Spiropyrrolidinyloxindoles.
Authors: Galliford Chris V. , Martenson James S. , Stern Charlotte , Scheidt Karl A. 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Selective Synthesis of 2‐Aryl‐1‐arylmethyl‐1H‐1,3‐benzimidazoles Promoted by Ionic Liquid.
Authors: Ma Huiqiang , Wang Yulu , Li Jianping , Wang Jinye 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Lawesson′s Reagent and Microwaves: A New Efficient Access to Benzoxazoles and Benzothiazoles from Carboxylic Acids under Solvent‐Free Conditions.
Authors: Seijas Julio A. , Vazquez‐Tato M. Pilar , Carballido‐Reboredo M. Raquel , Crecente‐Campo Jose , Romar‐Lopez Lucia 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Copper‐Catalyzed Synthesis of N‐Sulfonyl‐1,2,3‐triazoles: Controlling Selectivity.
Authors: Yoo Eun Jeong , Ahlquist Maarten , Kim Seok Hwan , Bae Imhyuck , Fokin Valery V. , Sharpless K. Barry , Chang Sukbok 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Catalytic Asymmetric Inverse‐Electron‐Demand Diels—Alder Reaction of N‐Sulfonyl‐1‐aza‐1,3‐dienes.
Authors: Esquivias Jorge , Gomez Arrayas Ramon , Carretero Juan C. 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
An Efficient and High Yielding Protocol for the Synthesis of Substituted Dihydropyrimidin‐2(1H)‐ones and Spiro‐Fused Heterocycles by Involving Tandem Reactions.
Authors: Bose D. Subhas , Idrees Mohd. 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Diacetone‐D‐glucose‐mediated Asymmetric Syntheses of Dihydroquinoxalinones.
Authors: Kim Yongtae , Lee Min Hee , Choi Eui Ta , No Eun Sun , Park Yong Sun 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis and Spectral Determination of New Derivatives of 1‐[(p‐Substituted)phenyl]‐3a‐[(o‐ and p‐substituted)phenyl]‐5‐chloro‐9‐methylthio‐10,3a‐dihydro‐ [1,2,4]‐oxadiazolo[2,3‐b][1,4]benzodiazepines.
Authors: Cortes Eduardo , Perez Remirez Erik , Garcia‐Mellado de Cortes Olivia 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Convenient per‐O‐Acetylation of Monosaccharides with Vinyl Acetate/Na3PO4—H2O.
Authors: Shi Chun‐juan , Zhang Jianbo , Fu Jie , Tang Jie 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
6‐endo versus 5‐exo Radical Cyclization: Streamlined Syntheses of Carbahexopyranones and Derivatives by 6‐endo‐trig Radical Cyclization.
Authors: Gomez Ana M. , Company Maria D. , Uriel Clara , Valverde Serafin , Lopez J. Cristobal 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The Nicholas Reaction: A Powerful Tool for the Stereoselective Synthesis of Bioactive Compounds
Authors: Diaz David D. , Betancort Juan M. , Martin Victor S. 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The Oxygen‐Bridge Templating Approach to Eight‐ and Nine‐Membered Carbocycles: Recent Developments Based on Catalytic Reactions
Authors: Lopez Fernando , Mascarenas Jose Luis 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Thiophene 1,1‐Dioxides as Unique Building Blocks in Modern Organic Synthesis and Materials Chemsitry
Authors: Moiseev A. M. , Balenkova E. S. , Nenajdenko V. G. 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Naturally Occurring Iridoids. A Review. Part 1.
Authors: Dinda Biswanath , Debnath Sudhan , Harigaya Yoshihiro 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Proteases in Plant Root Symbiosis
Authors: Takeda Naoya , Kistner Catherine , Kosuta Sonja , Winzer Thilo , Pitzschke Andrea , Groth Martin , Sato Shusei , Kaneko Takakazu , Tabata Satoshi , Parniske Martin 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
(+)‐Lentiginosine, a Potent and Selective Inhibitor of Amyloglucosidase: Synthetic Efforts and Disputes on Its Absolute Configuration
Authors: Cardona Francesca , Goti Andrea , Brandi Alberto 
Published: May 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
e‐Malaria: the schools Malaria project
Authors: Geldhill Robert , Kent Sarah , Milsted Andrew , Chapman Richard , Essex Jonathan W. , Frey Jeremy G. 
Published: May 2007

Abstracte‐Malaria (http://emalaria.soton.ac.uk/) aims to bring together 16–18 year old school students with university researchers to explain aspects of computational drug design using the example of the hunt for a new anti‐Malaria drug. Malaria kills a child every 30 seconds, and 40% of the world's population lives in countries where the disease is endemic. Resistance to existing drugs is increasing and there is a growing need for new compounds. This challenge is being offered to school students who will use a distributed drug search and selection system via a Web interface to design potential drugs. The project makes use of industrial code for the docking study (‘GOLD’) and as such presents valuable lessons in how to achieve the integration of industrial programs into a ‘free’ outreach environment. The results of the trials are displayed in an accessible manner, giving students an opportunity for discussion and debate both with peers and with university contacts. The initial project has been extended to provide a similar challenge for undergraduate chemists as part of a chemical informatics course at a level relevant to more advances chemical skills. Copyright © 2007 John Wiley & Sons, Ltd.
AMUSE: autonomic management of ubiquitous e‐Health systems
Authors: Lupu E. , Dulay N. , Sloman M. , Sventek J. , Heeps S. , Strowes S. , Twidle K. , Keoh S.‐L. , Schaeffer‐Filho A. 
Published: May 2007

AbstractFuture e‐Health systems will consist of low‐power on‐body wireless sensors attached to mobile users that interact with an ubiquitous computing environment to monitor the health and well being of patients in hospitals or at home. Patients or health practitioners have very little technical computing expertise so these systems need to be self‐configuring and self‐managing with little or no user input. More importantly, they should adapt autonomously to changes resulting from user activity, device failure, and the addition or loss of services. We propose the Self‐Managed Cell (SMC) as an architectural pattern for all such types of ubiquitous computing applications and use an e‐Health application in which on‐body sensors are used to monitor a patient living in their home as an exemplar. We describe the services comprising the SMC and discuss cross‐SMC interactions as well as the composition of SMCs into larger structures. Copyright © 2007 John Wiley & Sons, Ltd.
Steering via the image in local, distributed and collaborative settings
Authors: Wood J. D. , Wright H. 
Published: May 2007

AbstractComputational steering is a valuable mechanism for scientific investigation in which the parameters of a running program can be altered and the results visualized immediately. In a previous paper we put forward an architecture for computational steering that recognizes visualization as both the logical output and the input route. In this paper we investigate the practicalities of applying this architecture in local, distributed and collaborative steering. The work adopts a state‐transition modelling approach, keeping parameters and results together in the display in order to present information consistently. The outcome is a manageably small set of states that could apply to many different simulations. We also present the results of a preliminary user study on the demonstrator we have constructed. Copyright © 2007 John Wiley & Sons, Ltd.
Performance analysis of a semantics‐enabled service registry
Authors: Fang W. , Miles S. , Moreau L. 
Published: May 2007

AbstractService discovery is a critical task in service‐oriented architectures. In this paper, we study GRIMOIRES, the semantics‐enabled service registry of the OMII software distribution, from a performance perspective. We study the scalability of GRIMOIRES against the amount of information that has been published into it. The methodology we use and the data we present are helpful for researchers to understand the performance characteristics of the registry and, more generally, of semantics‐enabled service discovery. Based on this experimentation, we claim that GRIMOIRES is an efficient semantics‐aware service discovery engine. Copyright © 2007 John Wiley & Sons, Ltd.
Expression and function of the IL‐2 receptor in activated human plasmacytoid dendritic cells
Authors: Naranjo‐Gómez Mar , Oliva Harold , Climent Nuria , Fernández Marco A. , Ruiz‐Riol Marta , Bofill Margarita , Gatell José M. , Gallart Teresa , Pujol‐Borrell Ricardo , Borràs Francesc E. 
Published: May 2007

AbstractHuman and mouse plasmacytoid dendritic cells (PDC) express IL‐2 mRNA specifically upon TLR stimulation, but not under CD40L stimulation. Even though the expression of the IL‐2R by PDC has been described, the functional implications of this expression remain unknown. Here, we investigated the expression and function of the IL‐2R in activated human PDC. The IL‐2Rα chain, CD25, is expressed in both CpG‐ and CD40L‐activated PDC. CD25 expression is a relatively rapid event, as the receptor was detected 6 h after the initial activation signal. Exogenous IL‐2 added to CD40L‐activated PDC increased the expression of CD25, enhanced the secretion of pro‐inflammatory cytokines and promotes PDC survival. CpG‐activated PDC cultured in the presence of IL‐2R‐blocking monoclonal antibodies showed a reduced expression of pro‐inflammatory cytokines, especially TNF‐α. This reduction was dose and time dependent, suggesting a regulatory role of IL‐2 in TNF secretion that might occur at the post‐transcriptional level. These results indicate that the expression of the IL‐2R is relevant to human PDC activation, and that IL‐2 may be an important auto‐ and/or paracrine factor modulating the activation and survival of PDC. Finally, CD25 expression may be considered as a useful early activation marker for human PDC.
A Linear Ru‐Tl‐Ru Complex Obtained from Halide Abstraction: An Example of Metal‐Dative Bonding
Authors: Bytheway Ian , Griffith Christopher S. , Koutsantonis George A. , Skelton Brian W. , White Allan H. 
Published: May 2007

AbstractThe simple abstraction of chloride ion from [RuCl(CO)2(η‐C5H5)] using [TlBF4] proved problematic, unexpectedly giving a new complex containing linear Ru–Tl–Ru. The complex, [{Ru(CO)2(η‐C5H5)}2(μ‐Tl)(F–BF2–F)]∞, was polymeric, as determined by a single‐crystal X‐ray diffraction experiment, in which the thallium centres are bridged by the anions. In an effort to compare the nature of the Tl–Ru bonds, an additional complex was prepared by the reaction of Tl3+ions with [Ru(CO)2(η‐C5H5)]–. The resulting neutral complex, [{Ru(CO)2(η‐C5H5)}3(μ‐Tl)], was also structurally characterised. Quantum chemical calculations of [{Ru(CO)2(η‐C5H5)}2(μ‐Tl)][BF4] suggest that the Tl–Ru bond has ionic character with integrated atomic charges showing that the metal–metal bonding is best represented as Ru0–TlI–Ru0. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)