bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cadmium(II) Complexes with a Bulky Anthracene‐based Carboxylate Ligand: Syntheses, Crystal Structures, and Luminescent Properties
Authors: Liu Chun‐Sen , Wang Jun‐Jie , Chang Ze , Yan Li‐Fen 
Published: January 2010

AbstractTo explore the coordination possibilities of anthracene‐based ligands, three cadmium(ιι) complexes with anthracene‐9‐carboxylate (L) and relevant auxiliary chelating or bridging ligands were synthesized and characterized: Cd2(L)4(2bpy)2(μ‐H2O) (1), Cd2(L)4(phen)2(μ‐H2O) (2), and {[Cd3(L)6(4bpy)]}∞ (3) (2bpy = 2,2′‐bipyridine, phen = 1,10‐phenanthroline, and 4bpy = 4,4′‐bipyridine). Structural analyses show that complexes 1 and 2 both take dinuclear structures by incorporating the chelating 2bpy or phen ligand, which are further interlinked by intermolecular hydrogen‐bonding, π···π stacking, and/or C–H···π supramolecular interactions to generate higher‐dimensional supramolecular frameworks. Complex 3 has a one‐dimensional (1D) ribbon‐like structure, which is further assembled into a two‐dimensional (2D) layer, and a three‐dimensional (3D) framework by the co‐effects of interchain C–H···O hydrogen‐bonding and C–H···π supramolecular interactions. Moreover, the luminescent properties of these complexes were further investigated in detail.
A 121Sb and 151Eu Mössbauer Spectroscopic Investigation of EuMn2Sb2, EuZn2Sb2, YbMn2Sb2, and YbZn2Sb2
Authors: Schellenberg Inga , Eul Matthias , Hermes Wilfried , Pöttgen Rainer 
Published: January 2010

AbstractThe antimonides EuT2Sb2 and YbT2Sb2 (T = Mn, Zn) were synthesized from the elements in sealed tantalum tubes and their structures were refined on the basis of single‐crystal X‐ray diffractometer data: CaAl2Si2 type, P$\bar{3}$m1, a = 458.1(1), c = 767.4(2) pm, wR2 = 0.064, 188 F2 values for EuMn2Sb2, a = 452.6(2), c = 744.5(3) pm, wR2 = 0.026, 258 F2 values for YbMn2Sb2, a = 449.38(7), c = 761.5(1) pm, wR2 = 0.035, 355 F2 values for EuZn2Sb2, and a = 444.51(9), c = 742.7(1) pm, wR2 = 0.043, 336 F2 values for YbZn2Sb2, with 10 variables per refinement. The structures consist of puckered two‐dimensional [T2Sb2]δ– networks, which are separated by the europium or ytterbium atoms. Each T and antimony atom has distorted tetrahedral coordination, while the europium and ytterbium atoms have six nearest antimony neighbors in distorted octahedral coordination. Temperature dependent 151Eu Mössbauer spectra show purely divalent europium for EuMn2Sb2 and EuZn2Sb2. At 4.2 K both antimonides show full magnetic hyperfine field splitting with hyperfine fields of 26.5 (EuMn2Sb2) and 28.5 T (EuZn2Sb2), respectively. The isomer shifts (–7 to –8 mm·s–1) of the 121Sb Mössbauer spectra reflect the antimonide character. 121Sb Mössbauer spectra of EuMn2Sb2 and EuZn2Sb2 at 4.2 K show transferred hyperfine field of ca. 9 T. EuMn2Sb2 shows Curie–Weiss behavior above 630 K with an experimental magnetic moment of 10.6 μB/fu, indicative of divalent europium and divalent manganese. Ferromagnetic ordering of the manganese magnetic moments sets in at about 600 K. At 128 K (specific heat data) one observes a spin reorientation of the manganese magnetic moments and at 10 K the europium atoms order antiferromagnetically.
Structure Topology in Silver(I)‐(poly)chalcogenide Halides: A Helpful Tool to Understand Structure Relations and Properties
Authors: Nilges Tom , Bawohl Melanie , Messel Julia , Osters Oliver 
Published: January 2010

AbstractRecent progress in the field of silver(I)‐chalcogenide halides and silver(I)‐polychalcogenide halides led to the discovery of a reasonable number of new phases, solid solutions and even a new substance class of materials with favorable electronic and thermoelectric properties. Most of these new compounds are characterized by a pronounced ion mobility, polymorphism, and complex structures, which result in severe problems during the structure solution, the refinement, and even the description of the crystal structures. Herein we report on a very simple but effective building principle and a topological structure approach, which are both based on the separate description of anion substructures and the introduction of discrete building blocks. Such a topological principle helps to understand the complex structural relations and allows one to discuss all known chalcogenide and polychalcogenide halides in a continuous sequence of compounds. Following this principle it is possible to understand physical properties and to predict new phases in the system.
Crystal Structure and Physical Properties of RbNb4Br11
Authors: Habermehl Katja , Kleinke Holger , Meyer Gerd 
Published: January 2010

AbstractRbNb4Br11 was obtained by a solid state reaction of niobium powder, NbBr5 and RbBr in a sealed niobium tube at 500 °C. It crystallizes in the orthorhombic space group Pmma with a = 1699.5(1), b = 726.7(1), c = 694.5(1) pm, V = 857.6(1)·106 pm3, Z = 2 and is isotypic with CsNb4Br11. Four niobium atoms build a cluster in the shape of a rhombus with bonding distances of 295 pm (Nb1–Nb2) and 304 pm (Nb2–Nb2), respectively. The structure consists of [{Nb4}Br6iBr10/2a–a]–cluster complex anions that are interconnected by two common edges and two faces to the next cluster complexes, thus forming a 2D undulated layer structure. The Rb+ ion is coordinated by 12 Br– ions in the shape of an anticuboctahedron. Electronic structure calculations indicate the presence of a band gap of approximately 0.33 eV. This is experimentally confirmed by an electrical conductivity measurement revealing a slightly higher gap of 0.46 eV.
Solution and Solid State Structure of a BisBODIPY Fluorophor
Authors: Bröring Martin , Yuan Yuan , Krüger Robin , Kleeberg Christian , Xie Xiulan 
Published: January 2010

AbstractThe solution and solid‐state structures of 3,3′‐diethyl‐4,4′,8,8′,9,9′,10,10′‐octamethyl‐6,6′‐di‐p‐tolyl‐bisBODIPY, a potent fluorescent dye, were examined by X‐ray diffraction and NMR spectroscopy. The crystallographic analysis resulted in two different conformations for the fluorophor with dihedral angles between the C9N2B subunits of 91.9 and 96.8°. The presence of two different conformations is a consequence of the crystal packing as the 3D structure is composed of alternating layers of BisBODIPY molecules with and without cocrystallized solvent. In solution NMR spectroscopic studies the compound displays intramolecular and distance dependant through space C–F and F–F couplings, which were used to analyze the solution structure. This analysis suggests a single minimum conformation and a rigid, but unstrained structure in solution. The fluorescence properties of the BisBODIPY and in particular the high quantum yields found for this class of luminophores are qualitatively in agreement with the latter result, and better described by the solution structure than by the solid‐state structure.
Synthesis, Structure and High Thermal Stability of a Novel Three‐dimensional Zinc(II) Complex with an Unsymmetrical Rigid‐flexible Ligand
Authors: Yang Jie , Zhu Dunru , Zhang Haijuan , Xu Yan , Shen Lei , Wang Xiaozhu , Yuan Rongxin 
Published: January 2010

AbstractA novel metal‐organic framework, [Zn(C10H8O5)]n (1) (C10H8O5 = 2‐(4‐carboxylatophenoxy)propionate), was synthesized and characterized by elemental analysis, IR spectroscopy, X‐ray crystallography and thermogravimetric analysis. The crystal structure study reveals that each zinc atom is coordinated by four oxygen atoms from four different ligands to obtain a distorted tetrahedron. The rigid carboxyl group bridges two adjacent zinc atoms to form a dimer of eight‐membered rings, whereas the flexible carboxyl group bridges two adjacent dimers to form 1D chains along the a axis. Two adjacent 1D chains are interconnected by the ligands to produce 2D layers. These layers are further stabilized by intermolecular hydrogen bonds to construct a 3D framework showing high thermal stability (445 °C).
Blue Fluorescence Emission Property of a Metal‐Organic Coordination Polymer with One‐Dimensional Channels
Authors: Feng Dan , Liu Shuxia , Zhang Wei , Sun Ping , Ma Fengji , Zhang Chundan 
Published: January 2010

AbstractA metal‐organic coordination polymer formulated as (H3O)2[Zn(BTEC)] (1), where BTEC = 1,2,4,5‐benzenetetracarboxylate, was synthesized by solvothermal reaction and characterized by elemental analyses, thermal stability analysis, fluorescence and IR spectroscopy, as well as single‐crystal X‐ray diffraction analysis. Compound 1 is a three‐dimensional network containing one‐dimensional rhombic channels, the sizes of the windows are approximately 8 Å at the widest and 4.5 Å at the narrowest spacing (excluding the van der Waals radius of atoms in the framework) running along the c axis. The study of the physical properties of 1 demonstrates that it exhibits intense blue fluorescence emission in solid state at room temperature.
Ligand‐based Reduction in a Molecular Rectangle with Four Organplatinum(IV) Vertices
Authors: Kavakli Cüneyt , Schwederski Brigitte , Fiedler Jan , Gudat Dietrich , Kaim Wolfgang 
Published: January 2010

AbstractA first organoplatinum(IV)‐based molecular rectangle [{Pt(CH3)3}4(μ‐η1:η1‐bp)2(μ‐η2:η2‐bpym)2]4+ with bp = 4,4′‐bipyridine and bpym = 2,2′‐bipyrimidine has been obtained as tetrakis(triflate) in analogy to [{Re(CO)3}4(μ‐η1:η1‐bp)2(μ‐η2:η2‐bpym)2]4+, following the correspondence between the 5d6 configured species [fac‐ReI(CO)3]+ and [fac‐PtIV(CH3)3]+. Analytical data, 1H and 195Pt NMR spectroscopic as well as mass spectrometric results confirm the identity of the species. Cyclic voltammetry, EPR, and UV/Vis/NIR spectroelectrochemistry were used to investigate the sequence of reduction steps and the location of the electron uptake. Reduction involves first the bpym ligand in two 2‐electron waves and then the bp bridge in discernible one‐electron steps.
Zwei strukturverwandte Oxidnitridchalkogenide der Lanthanoide: Tb3ONSe2 und La5O2NS4
Authors: Lissner Falk , Strobel Sabine , Schleid Thomas 
Published: January 2010

AbstractThe structurally related oxide nitride chalcogenides Tb3ONSe2 and La5O2NS4 can be prepared by the oxidation of the respective lanthanoid metal (M = Tb and La) with selenium or sulfur and sodium azide (NaN3) in the presence of oxygen‐containing impurities, when iodine (I2) or the corresponding lanthanoid trichloride (MCl3) is used as sodium trap for the formation of NaI or NaCl, respectively. The thermal treatment of these mixtures along with additional NaI or NaCl as flux at 900 °C in evacuated silica tubes yielded transparent, yellow polyhedra in the case of Tb3ONSe2 or orange, lath‐shaped crystals of La5O2NS4. Both monoclinic structures (C2/m, Z = 4) were determined from X‐ray single‐crystal diffraction data (Tb3ONSe2: a = 1548.85(9), b = 392.02(2), c = 968.61(6) pm, β = 97.194(3)°; La5O2NS4: a = 1571.13(8), b = 409.67(2), c = 1681.03(9) pm, β = 101.204(3)°). The crystal structure of Tb3ONSe2 comprises three crystallographically different Tb3+ cations residing in six‐ and sevenfold coordination of the respective anions, whereas the crystal structure of La5O2NS4 shows five different La3+ cations with coordination numbers from six to eight. For the first time in the chemistry of oxide nitride chalcogenides of the lanthanides, an ordering of the light anions (O2– and N3–) is observed, and proper structure descriptions based on vertex‐ and edge‐connected [OM4]10+ and [NM4]9+ tetrahedra (M = Tb and La) becomes possible. As main structural feature, a bulky chain {}^1_\infty{[ONTb3]4+} running along [010] can be detected in the crystal structure of Tb3ONSe2. The same morphology, but a different chemistry is realized in the related crystal structure of La5O2NS4, where these topologically equivalent strands {}^1_\infty{[O2La3]5+} and an additional second chain {}^1_\infty{[NLa2]3+}, built up by vertex‐ and edge connected [NLa4]9+ tetrahedra, compose the compound. As supporting tool for the distinction of the O2– and N3– anions in both crystal structures, the valence‐bond concept is also applied.
Copper(II) Supramolecular Complex: Synthesis, Crystal Structure, and Electrochemical Property
Authors: Wu Huilu , Yun Ruirui , Wang Kaitong , Li Ke , Huang Xingcai , Sun Tao , Wang Yaoyu 
Published: January 2010

AbstractA novel complex {Cu(Bobb)2](pic)2}2 [pic = picrate anion, Bobb = 1,3‐bis(1‐benzylbenzimidazol‐2‐yl)‐2‐oxopropane] was synthesized and characterized by means of elemental analyses and electrical conductivity. The crystal structure of the copper complex has been determined by single‐crystal X‐ray diffraction. A study of the electrochemistry of the title compound was carried out by using cyclic voltammetry. It revealed that the copper complex exhibits a quasi‐reversible redox process. The X‐ray structure of the above complex shows that the unit cell consists of two centrosymmetric, crystallographically independent molecules, in which the copper(II) ions have the same coordination environment and should be described as distorted octahedron. The complex is formed of {···Cu(2)···Cu(1)···Cu(1)···}∞ supramolecular configuration by π···π stacking interactions between the benzimidazole rings. The complex was also identified by IR and electronic spectroscopy.
Solvothermal Syntheses and Crystal Structures of the Two New Polymeric Compounds [Ce(C4N3H13)2(μ3‐SbS4)]n and [La(C4N3H13)2(μ4‐Sb2S5)(μ3‐SO4)]n
Authors: Lichte Jessica , Näther Christian , Bensch Wolfgang 
Published: January 2010

AbstractThe two new one‐dimensional polymeric compounds [Ce(C4N3H13)2(μ3‐SbS4)]n (1) and [La(C4N3H13)2(μ4‐Sb2S5)(μ3‐SO4)]n (2) were synthesized under solvothermal conditions. In the first compound, the unique Ce3+ cation is surrounded by six nitrogen atoms of the amine ligands and by three sulfur atoms of the thioantimonate(V) anion. The CeN6S3 polyhedron may be described as a distorted tricapped trigonal prism. The prisms are interconnected by [SbS4]3– anions, which act in a μ3‐binding mode yielding a chain running along [100]. An extended hydrogen‐bonding network leads to the formation of layers. The second compound features two independent La3+ cations, one is in a ninefold [La(2)N6OS2] and the second is in a tenfold environment [La(1)N6O2S2]. The unusual features of the structure are a μ3‐bridging SO42– anion and a tetradentate thioantimonate(III) anion [Sb2S5]4– that join the two La3+ centered polyhedra into a chain being directed along [110]. The oxygen atoms of the sulfate anion and the sulfur atoms of the thioantimonate anion are involved in a complex hydrogen‐bonding network.
[NH3(CH2)6NH3][P2V5O17]·3.83H2O: A new 3D Organic‐templated Vanadophosphate with Extra‐large 16‐Membered Ring Constructed from Nanosized P–O–V Wheels
Authors: Zhang Zhibin , Xu Yan , Zheng Lei , Zhu Dunru 
Published: January 2010

AbstractA new porous 3D vanadophosphate, [NH3(CH2)6NH3][P2V5O17]·3.83H2O (1) is synthesized by using NH2(CH2)6NH2 as template, and characterized by single crystal structural analysis, X‐ray diffraction, IR spectroscopy, TG analysis, and powder XRD. Single crystal analysis shows that compound 1 crystallizes in cubic shape, space group Im$\bar{3}$m with cell dimensions: a = b = c = 26.5068(8) Å, V = 18624.0(10) Å3, Z = 24. Structural refinement indicates that the inorganic framework of 1 is constructed from nanosized P–O–V wheels.
Modulated Lanthanum Chains in the Crystal Structure of La3.65[Ru(C2)3]
Authors: Davaasuren Bambar , Dashjav Enkhtsetseg , Doert Thomas , Kreiner Guido , Schnelle Walter , Wagner Frank R. , Mihalkovič Marek , Kniep Rüdiger 
Published: January 2010

AbstractLanthanum ruthenium carbide La3.65[Ru(C2)3] crystallizes hexagonal (P63/m) with a = 887.9(2) pm and c = 1606.8(6) pm, V = 1096.8(4)·106 nm3, and Z = 6. The crystal structure contains trigonal‐planar Ru(C2)3 groups and lanthanum atoms, which form a partial structure of the chemical composition La3Ru(C2)3. Additional lanthanum atoms occupy hexagonal channels built by those carbon atoms of the C2 ligands, which are non‐bonded to the central ruthenium atoms. The distribution of these lanthanum atoms along the c axis results in a threefold superstructure, which was refined as a commensurate modulated structure (P63/m (00g)s0, q = (0, 0, {}^1/{}_3)). Harmonic occupational and displacive modulation functions were used for the structure refinement. The structure converged to R1 = 4.9 % for all data (R1 = 2.6 % for the main reflections, R1 = 11.1 % for the 1st order satellite reflections). A small homogeneity range for this phase is predicted by total energy calculations using the PAW‐GGA method (VASP). Chemical bonding analysis reveals that the C2 pairs are best described as acetylide C22– units.
Coordination of the Ester Group – Hydrido‐Rhodium(III) and Iridium(III) Complexes of Orthometallated Diphenylmethylene Glycine Esters [1]
Authors: Schreiner Bernhard , Beck Wolfgang 
Published: January 2010

AbstractAn overview on metal complexes that contain coordinated ester groups is given. A new example has been obtained by oxidative addition of the O′Donnell reagent Ph2C=NCH2CO2R to [(cyclooctene)2MCl]2 (M = Rh, Ir) which – in the presence of tricyclohexylphosphine – affords the complexes {(H)(Cl)[C6H11)3P]2M(C6H4)C(Ph)=NCH2CO2R}. In these complexes, the chlorido ligand is replaced for the ester group by using AgPF6 to give {(H)[(C6H11)3P]2M[C6H4)C(Ph)=NCH2CO2R}+PF6–.
SE19(C2)3I34 (SE = Y, Gd): Verbindungen mit diskreten SE6I12‐Clustern und isolierten SE‐Atomen
Authors: Schaloske Manuel C. , Kienle Lorenz , Duppel Viola , Mattausch Hansjürgen , Simon Arndt 
Published: January 2010

AbstractThe compounds RE19(C2)3I34 (RE = Y, Gd) were prepared from RE, REI3 and carbon in a molar ratio of 20:34:18 by the addition of three parts of REN at 920 °C (Y) and 900 °C (Gd), respectively, forming moisture sensitive, black shiny brittle polyhedra. X‐ray single crystal investigations indicated the triclinic system and E value statistics showed P$\bar{1}$, a = 9.3683(9) Å, b = 10.3410(9) Å, c = 22.1726(20) Å, α = 79.104(10)°, β = 88.175(11)°, γ = 69.227(10)° for Y19(C2)3I34 and a = 9.4172(9) Å, b = 10.3390(10) Å, c = 22.3711(24) Å, α = 79.001(12)°, β = 88.320(12)°, γ = 69.250(11)° for Gd19(C2)3I34, respectively. The RE atoms form two sets of different RE6 octahedra centered by C2 groups, which are coordinated by iodine atoms above all edges. In addition one isolated RE position occurs. The refinement served problems because of significant disorder showing up in a 65 % occupation of the isolated RE position and quite significant residual electron densities near the heavy atom positions. Electron diffraction confirmed the ideal structure, however, a detailed analysis via HRTEM showed alternations in the sequence of two kinds of layers.
Synthesis, Structure, and Bonding of Ca2Ni3Ge2 and Comparison with CaNiGe, SrNi2Ge, and Ca3Ni3Si2
Authors: Hlukhyy Viktor , Fässler Thomas F. 
Published: January 2010

AbstractA new intermetallic calcium nickel germanide Ca2Ni3Ge2 was synthesized by melting of mixtures of the three elements in an arc‐furnace and subsequent heat treatment in a muffle furnace. The compound was investigated by X‐ray powder and single‐crystal diffraction methods, and its structure has been refined on the basis of single‐crystal data. Ca2Ni3Ge2 crystallizes with a new structure type: Pmma, a = 9.097(2), b = 4.014(1), c = 7.019(1) Å, wR2 = 0.045, 355 F2 values, 28 variable parameters. In this structure the nickel and germanium atoms build puckered two‐dimensional [Ni3Ge2] layers, which are separated by the calcium atoms. The crystal chemistry of Ca2Ni3Ge2 as well as the chemical bonding in Ca2Ni3Ge2 and Ca3Ni3Si2 are briefly discussed.
La3TWS3O6 (T = Cr, Mn, Fe, Co, Ni): Quinary Rare Earth Transition‐Metal Compounds Showing a Nonmagnetic/Magnetic Transition (T = Co) – Synthesis, Structure and Physical Properties
Authors: Bryhan Douglas N. , Rakers Rosemary , Klimaszewski Krzysztof , Patel Nihar , Bohac Joshua J. , Kremer Reinhard K. , Mattausch Hansjürgen , Zheng Chong 
Published: January 2010

AbstractThe title compounds were synthesized from La2O3, T (T = Cr, Mn, Fe, Co, Ni), sulfur, tungsten and WO3 under vacuum at 950 °C. They crystallize in the space group P63/m (No. 176). The lattice constants for the chromium compound are a = 9.442(2) Å and c = 5.506(2) Å. Those for the other compounds are similar. The electron partition of (La3+)3T3+W6+(S2–)3(O2–)6 indicates that the transition metals in this structure all have a 3+ oxidation state and the solid is a normal valence compound. In this structure, the TS6/2 octahedra form chains parallel to the c axis by sharing faces. In the chromium compound, the Cr–Cr distance in the octahedron chain is 2.7531 Å. The tungsten atoms in the structure are at the centers of O6 trigonal prisms, whereas lanthanum atoms form trigonal prisms enclosing the tungsten atoms. Resistivity and susceptibility measurements reveal the insulating nature and nonmagnetic to magnetic transition of the cobalt compound.
A Community Psychology of Men and Masculinity: Historical and Conceptual Review
Authors: Mankowski Eric S. , Maton Kenneth I. 
Published: January 2010

AbstractThis paper introduces the special section by presenting a historical and conceptual review of theory and research on the psychology of men and masculinity and then introducing the section's papers. Men have power because of their gender, but differ in access to power based on other individual characteristics such as social class, income, education, ethnicity, sexual orientation, or physical strength. Men typically have been studied as generic rather than gendered beings in psychology. In contrast, a gendered analysis of men highlights the ways in which men's experience, masculinity, and behavior contribute to health and social problems and to resources commonly addressed by community psychologists. Our gendered analysis suggests ways of working with men in group, organizational, and community settings to create positive individual and social change. Crucial to this analysis is the paradox that enacting masculinity both privileges and damages men. A second paradox stems from men having power as a group over women while individual men feel powerless or victimized by women as a group. The papers in this volume illustrate key themes of our historical and conceptual review through studies of adolescent and adult men as fathers, patients, partner abusers, support group participants and community members, and through examination of the impact of their gendered identities and behavior on health, well being, and justice.
Neuro-kardio-fazio-kutane Syndrome
Authors: Mautner V.-F. , Nguyen R. , Bernhard A. , von Kodolitsch Y. , Zenker M. , Kutsche K. 
Published: January 2010

Zusammenfassung
Neuro-kardio-fazio-kutane („neuro-cardio-facio-cutaneous“: NCFC) Syndrome wurden in den letzten Jahren als eine Gruppe von angeborenen Erkrankungen definiert, deren phänotypische Überschneidungen eine gemeinsame pathogenetische Grundlage haben. Erkrankungen aus diesem phänotypischen Spektrum gehen mit einer Überfunktion des RAS-MAPK-Signalwegs (RAS: „rat sarcoma“, MAPK mitogenaktivierte Proteinkinase) einher. Zu den neuro-kardio-fazio-kutanen Erkrankungen gehören das Noonan-, das LEOPARD-, das kardio-fazio-kutane („cardio-facio-cutaneous“: CFC) und das Costello-Syndrom, die Neurofibromatose Typ 1 sowie das Legius-Syndrom. Für eine sachgerechte medizinische Diagnostik und Behandlung sowie die notwendige psychosoziale Betreuung von Betroffenen und deren Familien ist das Zusammenwirken verschiedener Fachdisziplinen notwendig.