bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis of Some 1‐[(N, N‐Disubstituted thiocar bamoylthio)acetyl]‐3‐(2‐thienyl)‐5‐aryl‐2‐pyrazoline Derivatives and Investigation of Their Antibacterial and Antifungal Activities
Authors: Turan‐Zitouni Gulhan , Özdemir Ahmet , Güven Kiymet 
Published: March 2005

AbstractFourteen new 1‐[(N, N‐disubstituted thiocarbamoylthio)acetyl]‐3‐(2‐thienyl)‐5‐aryl‐2‐pyrazoline derivatives (7a–n) were synthesised by reacting 1‐(chloroacetyl)‐3‐(2‐thienyl)‐5‐aryl‐2‐pyrazolines (5a–g) and appropriate sodium salts of N, N‐disubstituted dithiocarbamoic acids (6a, b). The structures of the synthesised compounds were confirmed by elemental analyses, UV, IR, 1H‐NMR and FAB+‐MS spectral data. Their antibacterial activities against Proteus vulgaris (NRRL B‐123), Escherichia coli (NRRL B‐3704), Aeromonas hydrophila (Ankara University, Faculty of Veterinary Sciences), Salmonella typhimurium (NRRL B‐4420), Streptococcus feacalis (NRRL B‐14617), Micrococcus luteus (NRLL B‐4375) were investigated and in this investigation, a significant level of activity was illustrated. Antifungal activities of the compounds against Candida albicans and Candida globrata (isolates obtained from Osmangazi Uni. Fac. of Medicine) were found to be inactive. Compounds 7c–n were also evaluated for antituberculosis activity against Mycobacterium tuberculosis H37Rv using the BACTEC 460 radiometric system and BACTEC 12B medium. The preliminary results indicated that all of the tested compounds were inactive against the test organism.
Mean‐field view on rotating magnetoconvection and a geodynamo model
Authors: Schrinner M. , Rädler K.‐H. , Schmitt D. , Rheinhardt M. , Christensen U. 
Published: March 2005

AbstractA comparison is made between direct numerical simulations of magnetohydrodynamic processes in a rotating spherical shell and their mean–field description. The mean fields are defined by azimuthal averaging. The coefficients that occur in the traditional representation of the mean electromotive force considering derivatives of the mean magnetic field up to the first order are calculated with the fluid velocity taken from the direct numerical simulations by two different methods. While the first one does not use specific approximations, the second one is based on the first–order smoothing approximation. There is satisfying agreement of the results of both methods for sufficiently slow fluid motions. For the investigated example of rotating magnetoconvection the mean magnetic field derived from the direct numerical simulation is well reproduced on the mean–field level. For the simple geodynamo model a discrepancy occurs, which is probably a consequence of the neglect of higher–order derivatives of the mean magnetic field in the mean electromotive force. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Differential rotation on the lower main sequence
Authors: Küker M. , Rüdiger G. 
Published: March 2005

AbstractWe compute the differential rotation of main sequence stars of the spectral types F, G, K, and M by solving the equation of motion and the equation of convective heat transport in a mean‐field formulation. For each spectral type the rotation rate is varied to study the dependence of the surface shear on this parameter. The resulting rotation patterns are all solar‐type. The horizontal shear turns out to depend strongly on the effective temperature and only weakly on the rotation rate. The meridional flow depends more strongly on the rotation rate and has different directions in the cases of very slow and very fast rotation, respectively. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
915 MHz microwaves and 50 Hz magnetic field affect chromatin conformation and 53BP1 foci in human lymphocytes from hypersensitive and healthy persons
Authors: Belyaev Igor Y. , Hillert Lena , Protopopova Marina , Tamm Christoffer , Malmgren Lars O.G. , Persson Bertil R.R. , Selivanova Galina , Harms‐Ringdahl Mats 
Published: March 2005

AbstractWe used exposure to microwaves from a global system for mobile communication (GSM) mobile phone (915 MHz, specific absorption rate (SAR) 37 mW/kg) and power frequency magnetic field (50 Hz, 15 μT peak value) to investigate the response of lymphocytes from healthy subjects and from persons reporting hypersensitivity to electromagnetic field (EMF). The hypersensitive and healthy donors were matched by gender and age and the data were analyzed blind to treatment condition. The changes in chromatin conformation were measured with the method of anomalous viscosity time dependencies (AVTD). 53BP1 protein, which has been shown to colocalize in foci with DNA double strand breaks (DSBs), was analyzed by immunostaining in situ. Exposure at room temperature to either 915 MHz or 50 Hz resulted in significant condensation of chromatin, shown as AVTD changes, which was similar to the effect of heat shock at 41 °C. No significant differences in responses between normal and hypersensitive subjects were detected. Neither 915 MHz nor 50 Hz exposure induced 53BP1 foci. On the contrary, a distinct decrease in background level of 53BP1 signaling was observed upon these exposures as well as after heat shock treatments. This decrease correlated with the AVTD data and may indicate decrease in accessibility of 53BP1 to antibodies because of stress‐induced chromatin condensation. Apoptosis was determined by morphological changes and by apoptotic fragmentation of DNA as analyzed by pulsed‐field gel electrophoresis (PFGE). No apoptosis was induced by exposure to 50 Hz and 915 MHz microwaves. In conclusion, 50 Hz magnetic field and 915 MHz microwaves under specified conditions of exposure induced comparable responses in lymphocytes from healthy and hypersensitive donors that were similar but not identical to stress response induced by heat shock. Bioelectromagnetics 26:173–184, 2005. © 2005 Wiley‐Liss, Inc.
Synthesis and Evaluation of 5‐Thio‐L‐Fucose‐Containing Oligosaccharide
Authors: Izumi Masayuki , Tsuruta Osamu , Kajihara Yasuhiro , Yazawa Shin , Yuasa Hideya , Hashimoto Hironobu 
Published: March 2005

Abstract5‐Thio‐L‐fucose‐containing trisaccharide H‐type II was synthesized. The 3′,4′‐O‐isopropylidene‐2‐azido‐2‐deoxylactoside derivative, which was prepared from lactose by azidonitration of lactal, was used as a starting material. By regio‐ and stereoselective 5‐thio‐L‐fucosylation of the 6,6′‐dibenzoate 5 with 5‐thiofucosyl trichloroacetimidate 6 and subsequent deprotection gave the 5‐thio‐L‐fucose‐containing H‐type II 1. Conformational analysis of the 5‐thio‐L‐fucose‐containing H‐type II and the native H‐type II was carried out through NOESY experiments. The observed NOE values between N‐acetylglucosamine and galactose, and galactose and fucose were same for these two trisaccharides. However, NOE values between fucose and N‐acetylglucosamine were significantly different. Binding of the 5‐thio‐L‐fucose‐containing H‐type II to lectins and antibodies were in some case stronger and in some case weaker than those of the native trisaccharide.
Organolanthanide‐Mediated Ring‐Opening Ziegler Polymerization (ROZP) of Methylenecycloalkanes: A Theoretical Mechanistic Investigation of Alternative Mechanisms for Chain Initiation of the Samarocene‐Promoted ROZP of 2‐Phenyl‐1‐methylenecyclopropane
Authors: Tobisch Sven 
Published: March 2005

AbstractA detailed theoretical investigation of alternative mechanisms for chain initiation of the organolanthanide‐promoted ring‐opening polymerization of 2‐phenyl‐1‐methylenecyclopropane (PhMCP) with an archetypical [Cp2SmH] model catalyst is presented. Several conceivable pathways for important elementary steps, which also included ring‐opening isomerization of PhMCP to phenylbutadienes, were critically scrutinized for a tentative course of the catalytic reaction. The operative mechanism starts with the first exo‐methylene CC insertion into the SmH bond in a 1,2 fashion and is followed by shift‐based β‐alkyl eliminative cyclopropyl ring opening by cleavage of a proximal bond, while the alternative mechanism that commences with 2,1‐insertion and subsequent ring opening by distal bond scission is revealed to be almost entirely precluded. The facile and irreversible insertion process is not found to occur in a regioselective fashion. The ring‐opening process is analyzed as the critical step that discriminates between the two conceivable mechanisms. Opening of the cyclopropyl ring is kinetically easy and proceeds readily for the 1,2‐insertion species, while a prohibitively large barrier must be overcome for ring opening of 2,1‐insertion species. The isomerization of PhMCP in a ring‐opened fashion, which would afford phenylbutadienes as possible products, is predicted to be a less likely process, owing to both kinetic and thermodynamic factors. The phenyl functionality has been demonstrated to distinguish between the regioisomeric ring‐opening pathways, both kinetically and thermodynamically, thereby rendering this process selective with regard to the regiochemistry. Overall, chain initiation of the samarocene‐mediated ring‐opening polymerization of PhMCP is predicted to be a smooth, kinetically facile process.
Where Does the Planar‐to‐Nonplanar Turnover Occur in Small Gold Clusters?
Authors: Olson Ryan M. , Varganov Sergey , Gordon Mark S. , Metiu Horia , Chretien Steeve , Piecuch Piotr , Kowalski Karol , Kucharski Stanislaw A. , Musial Monika 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Hydrothermal Synthesis and Characterization of Two New Three‐Dimensional Open‐Framework Gallophosphates JGP‐n (n: 8,9) Constructed from Inorganic Layers and HPO4 Tetrahedra.
Authors: Yang Yulin , Mu Zhongcheng , Xu Yan , Liu Yunlin , Chen Chao , Wang Wei , Yi Zhuo , Ye Ling , Pang Wenqin 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
“syn‐Effect” in the Conversion of (E)‐α,β‐Unsaturated Esters into the Corresponding β,γ‐Unsaturated Esters and Aldehydes into Silyl Enol Ethers.
Authors: Guha Samar Kumar , Shibayama Atsushi , Abe Daisuke , Sakaguchi Maki , Ukaji Yutaka , Inomata Katsuhiko 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Ruthenium‐Catalyzed Cycloisomerization of o‐(Ethynyl)phenylalkenes to Diene Derivatives via Skeletal Rearrangement.
Authors: Madhushaw Reniguntala J. , Lo Ching‐Yu , Hwang Chun‐Wei , Su Ming‐Der , Shen Hung‐Chin , Pal Sitaram , Shaikh Isak R. , Liu Rai‐Shung 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
SnCl4‐Promoted Rearrangement of 2,3‐Epoxy Alcohol Derivatives: Stereochemical Control of the Reaction.
Authors: Kita Yasuyuki , Matsuda Satoshi , Inoguchi Ryoko , Ganesh Jnaneshwara K. , Fujioka Hiromichi 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Site‐Selective Pd‐Catalyzed Coupling of 1,4‐Diiodo‐1,3‐alkadiene with Grignard Reagent and Its Application to the Synthesis of Fulvenes.
Authors: Uemura Minoru , Takayama Yuuki , Sato Fumie 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Chiral Self‐Dimerization of Vanadium Complexes on a SiO2 Surface: The First Heterogeneous Catalyst for Asymmetric 2‐Naphthol Coupling.
Authors: Tada Mizuki , Taniike Toshiaki , Kantam Lakshmi M. , Iwasawa Yasuhiro 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Photoinduced Ene‐Reaction of 9‐Methylene‐9,10‐dihydrophenanthrene with Alkenes.
Authors: Sugimoto Akira , Hiraoka Ryoichi , Yasueda Masahiro Kanayama , Mukae Hirofumi , Mizuno Kazuhiko 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Fullerides: Heterometallic Superconductors with Composition M2M′C60 (M: K, Rb; M′: Yb, Lu, Sc)
Authors: Bulychev B. M. , Lunin R. A. , Kul'bachinskii V. A. , Shpanchenko R. V. , Privalov V. I. 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Mononuclear Heterocyclic Rearrangement: Synthesis of [5:5] Bicyclic [c]‐Fused 3‐Aminopyrazoles via the N—N Bond Formation Strategy.
Authors: Berry David A. , Chien Tun‐Cheng , Townsend Leroy B. 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Environment‐Friendly Organic Synthesis Using Bismuth Compounds. Bismuth Triflate Catalyzed Synthesis of Substituted 3,4‐Dihydro‐2H‐1‐benzopyrans.
Authors: Nguyen Mai P. , Arnold Joshua N. , Peterson Katherine E. , Mohan Ram S. 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Allelopathic Studies in Cultivar Species. Part 17. Bioactive Apocarotenoids annuionones F and G: Structural Revision of Annuionones A, B and E.
Authors: Macias Francisco A. , Lopez Adriana , Varela Rosa M. , Torres Ascension , Molinillo Jose M. G. 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis and Interfacial Behavior of Sulfur‐Containing Analogues of Lung Surfactant Dipalmitoyl Phosphatidylcholine.
Authors: Chang Yusuo , Wang Zhengdong , Notter Robert H. , Wang Zhongyi , Qu Long , Schwan Adrian L. 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Analysis and simulation of interrupt overhead impact on OS throughput in high‐speed networks
Authors: Salah K. , El‐Badawi K. 
Published: March 2005

AbstractThe paper presents analytical and simulation models to study the impact of interrupt overhead on operating system throughput of network elements such as PC‐based routers, servers, and hosts when subjected to high‐speed network traffic. Under such high network traffic, the system throughput will be negatively affected due to interrupt overhead caused by the incoming traffic. We first present an analytical model for the ideal system when interrupt overhead is ignored. We then present two models which describe the impact of high interrupt rate on system throughput. One model is for employing PIO in which network adapters are not equipped with DMA engines, and the other model is for employing DMA in which network adapters are equipped with DMA engines. The paper also describes detailed discrete‐event simulation models for the ideal system and for systems with DMA and PIO. Simulations results as well as reported experimental measurements show that our analytical models are valid and give a good approximation. Our analysis and simulation work can be valuable in providing insight to understand and predict system behaviour, as well as improving and maintaining good host performance. The paper identifies analytically critical design operation points such as that of overload condition. The paper also proposes solutions and recommendations for improving performance. Copyright © 2005 John Wiley & Sons, Ltd.
Activated CD1d‐restricted natural killer T cells secrete IL‐2: innate help for CD4+CD25+ regulatory T cells?
Authors: Jiang Shuiping , Game David S. , Davies Derek , Lombardi Giovanna , Lechler Robert I. 
Published: March 2005

AbstractCD4+CD25+ and CD1d‐restricted natural killer T (NKT) cells are thymus‐derived self‐reactive regulatory T cells that play a key role in the control of pathological immune responses. Little is known about functional cooperation between innate regulatory NKT cells and adaptive CD4+CD25+ regulatory cells. Here we show that human CD4+Vα24+Vβ11+ (CD4+ NKT) cells isolated from peripheral blood by flow cytometric cell sorting secrete substantial amounts of IL‐2 after stimulation with dendritic cells (DC) and α‐Galactosylceramide. When cocultured with CD4+CD25+ cells, CD4+ NKT cells promoted moderate proliferation of CD4+CD25+ cells. The proliferation of CD4+CD25+ T cells was due to soluble IL‐2 produced by activated CD4+ NKT cells. The expanded CD4+CD25+ cells remained anergic and retained their potent suppressive properties. These findings indicate that unlike conventional CD4+ and CD8+ T cells, which are susceptible to CD4+CD25+ regulatory cell suppression, NKT cells promote CD4+CD25+ regulatory cell proliferation. These data raise the possibility that NKT cells can function as helper cells to CD4+CD25+ regulatory T cells, thereby providing a link between the two naturally occurring populations of regulatory T cells.
Selective inhibition of NF‐κB in dendritic cells by the NEMO‐binding domain peptide blocks maturation and prevents T cell proliferation and polarization
Authors: Tas Sander W. , de Jong Esther C. , Hajji Najat , May Michael J. , Ghosh Sankar , Vervoordeldonk Margriet J. , Tak Paul P. 
Published: March 2005

AbstractDendritic cells (DC) are the only antigen‐presenting cells for naive T cells and, therefore, they are crucial players in the initiation of immune responses. Because DC maturation and cytokine production are NF‐κB dependent, we hypothesized that blocking NF‐κB activity in DC by selectively targeting the inhibitor of κB (IκB) kinase (IKK) complex using the novel NF‐κB inhibitor NEMO‐binding domain (NBD) peptide could inhibit DC maturation and other functional characteristics, resulting in modulation of the immune response. We used human monocyte‐derived DC to test the biological effects of the NBD peptide in vitro. NF‐κB inhibition by the NBD peptide resulted in blockade of IKK‐mediated IκBα phosphorylation and subsequent nuclear translocation and DNA binding of NF‐κB p65 in DC. In addition, IL‐6, IL‐12, and TNF‐α production was dose‐dependently blocked and NBD peptide treatment also led to a strong reduction of LPS‐induced maturation. Functional analysis of these DC showed marked inhibition of T cell proliferation in the allogeneic mixed lymphocyte reaction, accompanied by less Th1 and Th2 polarization. The current study reveals for the first time the unique properties of this novel, highly specific NF‐κB inhibitor in DC. Also, these data indicate that the NBD peptide could be used as an elegant tool in DC based immunotherapy for unwanted cellular immune responses.
Use of the Di‐2‐pyridyl Ketone/Acetate/Dicyanamide “Blend” in Manganese(II), Cobalt(II) and Nickel(II) Chemistry: Neutral Cubane Complexes
Authors: Papaefstathiou Giannis S. , Escuer Albert , Mautner Franz A. , Raptopoulou Catherine , Terzis Aris , Perlepes Spyros P. , Vicente Ramon 
Published: March 2005

AbstractThe use of di‐2‐pyridyl ketone [(2‐py)2CO]/dicyanamide “blend” in cobalt(II), manganese(II) and nickel acetatechemistry has yielded neutral cubane clusters. The preparation of [Mn4(O2CMe)2{N(CN)2}2{(2‐py)2C(OH)O}4]·2(2‐py)2‐CO·4H2O (1) and [M4(O2CMe)2{N(CN)2}2{(2‐py)2C(OH)O}4]·10H2O [M = Ni (2), Co (3)] was achieved by the reaction of [M(O2CMe)2]·4H2O with (2‐py)2CO and Na[N(CN)2] in MeOH/H2O (1:5, v/v) at room temperature. The metal(II)‐mediated hydrolysis of (2‐py)2CO to give the coordinated monoanion of the hydrate gem‐diol form involves a nucleophilic attack of H2O on the carbonyl group. In the case of the cobalt reaction system, there is a second product. Upon employing an excess of (2‐py)2CO, long reaction times, reflux conditions and high dilution, slow oxidation of CoII takes place leading to the isolation of the mononuclear cobalt(III) complex [Co{(2‐py)2C(OH)O}2][N(CN)2]·4H2O (4) in yields higher than 70 %. The structures of 1, 2 and 4 have been solved by single‐crystal X‐ray diffraction studies, while a unit‐cell determination indicated that complex 3 is isostructural with 2. The tetranuclear cluster molecules of 1 and 2 have cubane [M4(μ3‐OR)4]4+ cores with divalent metal atoms and deprotonated oxygen atoms [originating from the(2‐py)2C(OH)O– ligands] occupying alternate vertices. The centrosymmetric [Co{(2‐py)2C(OH)O}2]+ cation of complex 4 has an octahedral structure with the (2‐py)2C(OH)O– ligands adopting the tridentate N,O,N‐chelating coordination mode. The magnetic properties of 1–3 have been studied by variable‐temperature dc magnetic susceptibility techniques. The studies indicate weak antiferromagnetic coupling for 1 and ferromagnetic behaviour for 2 and 3. A three‐J model was found to be adequate for describing the thermal variation of the molar magnetic susceptibilities of 1 and 2. The magnetochemical results have been compared with literature data. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
New Access to Homodinuclear Half‐Sandwich Vinylidenemanganese Complexes
Authors: Venkatesan Koushik , Fox Thomas , Schmalle Helmut W. , Berke Heinz 
Published: March 2005

AbstractThe d6 low‐spin MnI half‐sandwich dinuclear complexes of the type [{Mn(MeC5H4)(R2PCH2CH2PR2)=C=C(SnMe3)}2{X}] (X = {μ‐1,4‐C6H4}, R = Me, 2a; X = {μ‐1,4‐C6H4}, R = Et, 2b; X = {μ‐1,3‐C6H4}, R = Me, 3a; X = {μ‐1,3‐C6H4}, R = Et, 3b; X = {μ‐4,4‐C6H4‐C6H4}, R = Me, 4a; X = {μ‐4,4‐C6H4‐C6H4}, R = Et, 4b; X = {μ‐1,4‐C4H2S}, R = Me, 5a; X = {μ‐1,4‐C4H2S}, R = Et, 5b) were obtained by the treatment of [Mn(C5H4Me)(η6‐cycloheptatriene)] with 0.5 equiv. of the corresponding acetylene Me3Sn–C≡C–X–C≡C–SnMe3 (X = {μ‐1,4‐C6H4}, {μ‐1,3‐C6H4}, {μ‐4,4‐C6H4‐C6H4}, {μ‐1,4‐C4H2S}) and R2PCH2CH2PR2 (R = Me, Et) at 50 °C for 12 h to yield the corresponding dinuclear complexes in very good yields. These dinuclear tin‐substituted vinylidene complexes were further treated with an excess of MeOH to give the corresponding dinuclear parent vinylidene complexes of the type [{Mn(MeC5H4)(R2PCH2CH2PR2)=C=C(H)}2{X}] (X = {μ‐1,4‐C6H4}, R = Me, 6a; X = {μ‐1,4‐C6H4}, R = Et, 6b; X = {μ‐1,3‐C6H4}, R = Me, 7a; X = {μ‐1,3‐C6H4}, R = Et, 7b; X = {μ‐4,4‐C6H4‐C6H4}, R = Me, 8a; X = {μ‐4,4‐C6H4‐C6H4}, R = Et, 8b). All dinuclear compounds were characterised by NMR and IR spectroscopy and elemental analysis. X‐ray diffraction studies were performed on complexes 2b, 3a, 4a and 6a. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
First Complexes of a 4‐Alkyl‐3,5‐di(2‐pyridyl)‐4H‐1,2,4‐triazole: Synthesis,X‐ray Crystal Structures and Magnetic Properties of Dinuclear Cobalt(II), Nickel(II) and Copper(II) Complexes of 4‐Isobutyl‐3,5‐di(2‐pyridyl)‐4H‐1,2,4‐triazole
Authors: Klingele Marco H. , Boyd Peter D. W. , Moubaraki Boujemaa , Murray Keith S. , Brooker Sally 
Published: March 2005

AbstractThe reaction of the new, bis(bidentate), potentially dinucleating ligand 4‐isobutyl‐3,5‐di(2‐pyridyl)‐4H‐1,2,4‐triazole (ibdpt) with M(ClO4)2·6H2O (M = CoII, NiII or CuII) in a1:1 molar ratio in MeCN affords the dinuclear complexes [CoII2(ibdpt)2(MeCN)2(H2O)2](ClO4)4 (1), [NiII2‐(ibdpt)2‐(MeCN)4](ClO4)4 (2) and [CuII2(ibdpt)2(MeCN)2‐(ClO4)2]‐(ClO4)2·2MeCN (3). Complex 1 is obtained as a mixture of the red‐orange polymorph 1a and the yellow‐orange polymorph 1b, the main difference between the two forms being the hydrogen bonding patterns between the H2O co‐ligands and the ClO4– counterions. The mononuclear complex [CuII‐(ibdpt)2(ClO4)2] (4) was initially obtained as a minor by‐product in the preparation of complex 3 but can also be deliberately prepared from Cu(ClO4)2·6H2O and ibdpt in MeCN using a metal‐to‐ligand molar ratio of 1:2. All five complexes have been structurally characterised by X‐ray diffraction. In the dinuclear complexes 1–3 the (N,N1,N2,N)2double bridging coordination mode is realised while the mononuclear complex 4 features the common trans‐(N,N1)2 coordination mode. In all cases the metal centres reside in distorted octahedral N4X2 coordination spheres with axially bound co‐ligands (X = H2O, MeCN or ClO4–). The dinuclear complexes 1–3 readily lose solvent when taken out of their mother liquors giving rise to partially desolvated materials. Magnetic studies have been carried out on crystalline samples of the resulting complexes that analysed as CoII2‐(ibdpt)2(ClO4)4‐(MeCN)(H2O) (5), NiII2(ibdpt)2(ClO4)4(MeCN) (6) and CuII2‐(ibdpt)2(ClO4)4(MeCN) (7). It was found that in these complexes the two 1,2,4‐triazole bridges facilitate antiferro‐magnetic coupling between the two metal centres (J =–3.76 cm–1, –13.0 cm–1 and –105 cm–1, respectively). The coordination compounds described in this paper are the first to incorporate a 4‐alkyl‐substituted 3,5‐di(2‐pyridyl)‐4H‐1,2,4‐triazole ligand. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)