A5088711781- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Crystallography and molecular interactions
- Metal-Organic Frameworks: Synthesis and Applications
- Polyoxometalates: Synthesis and Applications
- Magnetism in coordination complexes
- Crystal Structures and Properties
- Chemical Synthesis and Characterization
- Cultural Heritage Materials Analysis
- Inorganic Chemistry and Materials
- Crystal structures of chemical compounds
- Polymer Synthesis and Characterization
- Thermal and Kinetic Analysis
- Metal complexes synthesis and properties
- Catalysis and Oxidation Reactions
- Pigment Synthesis and Properties
- Vanadium and Halogenation Chemistry
- Lanthanide and Transition Metal Complexes
- Building materials and conservation
- Inorganic Fluorides and Related Compounds
- Advanced Condensed Matter Physics
- Rare-earth and actinide compounds
- Chemical Synthesis and Reactions
- Organometallic Compounds Synthesis and Characterization
- Nuclear materials and radiation effects
Jagiellonian University
2015-2024
Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences
2015-2024
Polish Academy of Sciences
2006-2016
Faculty (United Kingdom)
2015
University of Southern Denmark
2012
Japan Proton Accelerator Research Complex
2011
University of Tsukuba
2011
Japan Atomic Energy Agency
2011
University of Warsaw
2010
Universidad de La Laguna
2009
Stairway to heaven: An Mn2Nb coordination framework shows huge switching of the magnetic ordering temperature in two well-defined steps, finally reaching 100 K its anhydrous form. The switching, controlled by removal/uptake guest molecules, is related an intraskeletal molecular rearrangement involving reversible formation/breaking bridges and translocation organic ligand on dehydration (see picture; VAC=vacuum). Detailed facts importance specialist readers are published as ”Supporting...
Fully reversible room temperature dehydration of 3D {Mn(II)2(imH)2(H2O)4[Nb(IV)(CN)8] x 4 H2O}n (1; imH = imidazole) Tc 25 K results in the formation ferrimagnet {[Mn(II)(imH)]2[Nb(IV)(CN)8]}n (2), with 62 K, highest ever known for octacyanometalate-based compounds. The dramatic magnetostructural modifications 2 provide first example magnetic spongelike behavior an octacyanometallate-based assembly.
We present an overview of very recent advances in the engineering magnetic networks based on octacyanometalates. The selected CuIIWV, NiIIWV and MnIILNbIV (L – organic bridging linker) illustrate possible strategies for tuning characteristics. combination ordering 2D (two-dimensional) 3D (three-dimensional) together with solvent sensitivity a cyano-bridged framework resulted development novel {[MnII(imH)]2[NbIV(CN)8]} assembly sponge character, characterized by Tc 62 K, highest ever observed...
Black AgSO4, synthesized for the first time by a displacement reaction, differs considerably from anhydrous sulfates of its Group 11 congeners: it has very small electronic band gap (ca. 0.2 eV) and an anomalously strong one-dimensional antiferromagnetic ordering ( J≈10 meV per Ag), which persists up to onset thermal decomposition at about 120 °C. Ag gray, O red, S yellow. The chemistry coinage metals is rich surprising, considerable differences are found between copper, silver, gold.1 Among...
A series of cadmium sulfide materials have been prepared using microwave-assisted hydrolysis cadmium−thiourea complexes in water and nonaqueous solvents. Materials are characterized X-ray diffraction, scanning electron microscopy, diffuse reflectance spectroscopy, various photoelectrochemical techniques. Sulfur-doped samples CdS exhibit a pronounced photocurrent switching effect within low-energy tails their absorption spectra. mechanism the process is presented on basis experimental...
Methanol adsorption into the porous 2D bimetallic coordination network {[Ni(cyclam)]3[W(CN)8]2}n (cyclam = 1,4,8,11-tetraazacyclotetradecane) causes significant modification of its structure and magnetic properties. Fully reversible transformations between three states network: anhydrous, hydrated methanol-modified are observed with transition to ordered state at Tc equal 4.9 K, 8.3 K 11.4 respectively. All phases have a metamagnetic character but one most easily turns ferromagnetic shows...
In this paper we report the influence of stereochemistry on self-organization in solid state cyclic dipeptides (CDP) employing two diastereomeric samples cyclo(l-Tyr-l-Ala), cYA 1, and cyclo(l-Tyr-d-Ala), cY(D)A 2, as models. Both compounds were investigated by means differential scanning calorimetry (DSC), NMR (SS NMR) spectroscopy, electron microscopy (SEM), powder X-ray diffraction (PXRD), electronic circular dichroism (ECD) attenuated total reflectance Fourier transform infrared...
A group of new polymolybdates was synthesized and tested in the catalytic oxidation cycloalkanes. Investigated compounds exhibit broad structural diversity including with isolated anionic clusters (0-dim), polymeric anions (1-dim), Mo–O layers (2-dim) as well hexagonal orthorhombic molybdenum oxides (3-dim). All studied complexes were found to be active reaction conditions yielding ketones alcohols main products. In case layered (2-dim), dicarboxylic acid detected mixture The structure...
Crystal structure and magnetic properties of K2AgF4, related to recently studied Cs2AgF4, have been scrutinized. It crystallizes orthorhombic (Cmca No.64) with a = 6.182(3) Å, b 12.632(5) c 6.436(3) Å (Z 4, V 502.6(7) Å3). K2AgF4 exhibits slightly puckered [AgF2] sheets compressed octahedral coordination Ag(II) it is not isostructural Cs2AgF4. Violet–coloured orders ferromagnetically below 26 K. The DFT calculations reproduce semiconducting ferromagnetism at the LSDA + U level but only if...
Two novel non-stoichiometric 3D cyano-bridged coordination networks of general formula CuII2+x{CuII4[WV(CN)8]4−2x[WIV(CN)8]2x}·yH2O were obtained according to two different synthetic strategies. The heterogeneous reaction between solid 2D network (dienH3){CuII[WV(CN)8]}3·4H2O (1) (dienH33+ = protonated diethylenetriamine) and an aqueous solution DyIII(NO3)3 results in the removal dienH33+ cations formation a CuII2.44{CuII4[WV(CN)8]3.12[WIV(CN)8]0.88}·5H2O (2) network. direct combination...
Using a polyamine cation tetrenH55+ (tetren = tetraethylenepentaamine), we tailored the dynamic layered material (tetrenH5)1.6{CoII(H2O)2[MIV(CN)8]}4·xH2O (1, M W, x 12; 2, Mo, 11.2). 1 and 2 consist of strongly corrugated two-dimensional (2D) cyano-bridged monolayers {CoII(H2O)2[MIV(CN)8]}n2n– square grid topology stacked in an alternate manner with cationic layers H2O molecules. The observed single-crystal-to-single-crystal (SCSC) transformation is due to reversible dehydration respective...
Abstract InN crystals of size up to 50 μm were synthesized using a microwave plasma source nitrogen. The powder wurtzite-type structure obtained was characterized by X-ray diffraction. Lattice parameters measured in the temperature range 100–673 K. average room-temperature lattice three samples studied at 296(±3)K are = 3.5374(1)Å, c 5.7027(5)Å. calculated density is 6.923 ± 0.003g cm−3. thermal expansion coefficients investigated 3.6(2) × 10−6K−1 and 2.6(3) 10−6K−1.
Abstract This paper discusses and compares molecular interactions of rhodanine (Rd), the heterocyclic compound containing N, S, O atoms, with two forms silver species, i.e. Ag(I) ions nanocolloidal particles. Vibrational spectroscopic powder crystallography studies on coordination in solid state, supported by density functional theory, clearly indicate complexation through nitrogen (the deprotonated imino group) exocyclic sulfur atoms. Molecules complex are arranged a one‐dimensional...
Reaction between [Ni(cyclam)](2+) and [W(CN)(8)](4-) leads to the formation of a 3D diamond-like network [Ni(cyclam)](2)[W(CN)(8)]·3.5H(2)O (1). The structure is characterised by intersecting channels 3-4 Å in diameter, filled with crystallisation water, most which released upon drying air, causing crystals collapse. Analogous compound [Ni(cyclam)](2)[Nb(CN)(8)]·3.5H(2)O (2), based on paramagnetic Nb(IV), could only be obtained as powder, due decomposition [Nb(CN)(8)](4-) complex under slow...
A new family of organic–inorganic hybrid layered materials based on cadmium and zinc sulfates was synthesized using 1,2-phenylenediamine (OPD), 1,3-phenylenediamine (MPD), 1,4-phenylenediamine (PPD) as organic templates ligands. The diamines act structure-directing agents to obtain one-dimensional (1D), 2D, 3D frameworks. Six were obtained utilizing a simple, solvent-free synthesis approach: 1D: (OPD)2ZnSO4 1, (OPD)2CdSO4 2; 2D: (MPD)2ZnSO4 3, (MPD)2CdSO4 4; 3D: (PPD)ZnSO4 5, (PPD)CdSO4 6....