Synthesis, Structure, and Properties of a Copper(II) Binuclear Complex Based on Trifluoromethyl Containing Bis(pyrazolyl)hydrazone.

A new complex of copper(II) with methyl-5-(trifluoromethyl)pyrazol-3-yl-ketazine (HL) was synthesized with the composition [CuL]∙CHOH (). Recrystallization of the sample from DMSO yielded a single crystal of the composition [CuL((CH)SO)] (). The coordination compounds were studied by single-crystal X-ray diffraction analysis, IR spectroscopy, and static magnetic susceptibility method.

Octahedral molybdenum iodide clusters with pyrazole or pyrazolate ligands.

Due to the combination of useful physicochemical properties (luminescence, X-ray contrast, .), octahedral molybdenum halide cluster complexes [MoXL] have been the subject of active investigation during the last decades. The most common methods for synthesizing new compounds with organic ligands involve the use of silver salts of organic acids or the substitution of terminal methylate ligands.

Correction: Optical property trends in a family of {MoI} aquahydroxo complexes.

Correction for 'Optical property trends in a family of {MoI} aquahydroxo complexes' by Margarita V. Marchuk , , 2021, , 8794-8802, https://doi.org/10.

Potassium and Cesium Fluorinated β-Diketonates: Effect of a Cation and Terminal Substituent on Structural and Thermal Properties.

As potential precursors for the synthesis of fluoroperovskites, a family of heavy alkali metal (M = K, Cs) fluorinated β-diketonates were prepared and characterized by elemental analysis, IR, and powder-XRD. The crystal structures of the new six complexes, M(β-dik)(HO), X = 0 or 1, were also determined. The structural diversity of this poorly explored class of complexes was discussed, including the preferred types of cation polyhedra and the ligand coordination modes, and the thermal properties of the metal β-diketonates were studied by TG-DTA in an inert (He) atmosphere.

Crystal Structure and Thermal Properties of Double-Complex Salts [M(NH)][M(CO)] (M, M = Co, Rh) and K[Rh(NH)][Rh(CO)]∙6HO.

Here, seven new double-complex salts, [M(NH)][M(CO)] (M, M = Co, Rh) and K[Rh(NH)][Rh(CO)]∙6HO types, are synthesised. The crystal structure and composition of DCS (double-complex salts) are studied by SCXRD, XRD, CHN and IR methods. The complex salts of the [M(NH)][M(CO)] (M, M = Co, Rh) type can be crystallised both as a crystalline hydrate [M(NH)][M(CO)]·3HO (sp.

Spin Crossover and Thermochromism in Iron(II) Complexes with 2,6-Bis(1-imidazol-2-yl)-4-methoxypyridine.

New iron(II) complexes with 2,6-bis(1-imidazol-2-yl)-4-methoxypyridine () of the composition [FeL]A∙mHO (A = SO, n = 1, m = 2 (); A = ReO, n = 2, m = 1 (); A = Br, n = 2, m = 2 ()) have been synthesized and investigated. To determine the coordination ability of the ligand, a single crystal of a copper(II) complex of the composition [CuLCl] () was obtained and studied by X-ray technique. Compounds - were studied using methods of X-ray phase analysis, electron (diffuse reflection spectra), infrared and Mössbauer spectroscopy, static magnetic susceptibility.

Chromium-Lanthanide Complexes Containing the Cr═P═Cr Fragment: Synthesis, Characterization, and Computational Study.

Heterometallic complexes [Cp*Ln(μ-CO){Cr(μ-P)Cp(CO)}] [Ln = Yb (), Sm ()] were obtained in reactions of [Cp*Ln(thf)] (Ln = Sm, Yb) with [{CpCr(CO)}(μ,η-P)] (). An analogous yttrium compound [Cp*Y(μ-CO){Cr(μ-P)Cp(CO)}] () was synthesized using a three-component reaction between [Cp*Y(BPh)], , and KC. Compounds - were isolated as solvent-free crystalline phases; in the case of , the solvate was also obtained.

CsLnCuS (Ln = La-Nd, Sm-Tb): Synthesis, Crystal Structure, and Magnetic and Optical Properties.

This work reports the preparation of new quaternary sulfides CsLnCuS (Ln = La-Nd, Sm-Tb), their original crystal and electronic structures, and their magnetic properties. The sulfides were prepared using a reactive flux method from mixtures of LnS (EuS), CsS, CuS, and S. They crystallize in a new type of structure (2/ space group) and exhibit a layer-like crystal structure, which is a hybrid of those of the ACeCuS series (A = Cs, K) and that of KCeCuS.

Structural, Spectroscopic, Electric and Magnetic Properties of New Trigonal KFeHf(MoO) Orthomolybdate.

A new multicationic structurally disordered KFeHf(MoO) crystal belonging to the molybdate family is synthesized by the two-stage solid state reaction method. The characterization of the electronic and vibrational properties of the KFeHf(MoO) was performed using density functional theory calculations, group theory, Raman and infrared spectroscopy. The vibrational spectra are dominated by vibrations of the MoO tetrahedra, while the lattice modes are observed in a low-wavenumber part of the spectra.

Unusual Square Pyramidal Chalcogenide Mo Cluster with Bridging Pyrazolate-Ligands.

The family of chalcogenide molybdenum clusters is well presented in the literature by a series of compounds of nuclearity ranging from binuclear to multinuclear articulating octahedral fragments. Clusters actively studied in the last decades were shown to be promising as components of superconducting, magnetic, and catalytic systems. Here, we report the synthesis and detailed characterization of new and unusual representatives of chalcogenide clusters: square pyramidal complexes [{Mo(μ-Se)(μ-Se)(μ-pz)}(pzH)] (pzH = pyrazole, i = inner, t = terminal).

Water-Soluble Chalcogenide W-Clusters: On the Way to Biomedical Applications.

Despite the great potential of octahedral tungsten cluster complexes in fields of biomedical applications such as X-ray computed tomography or angiography, there is only one example of a water-soluble WQ-cluster that has been reported in the literature. Herein we present the synthesis and a detailed characterization including X-ray structural analysis, NMR, IR, UV-Vis spectroscopies, HR-MS spectrometry, and the electrochemical behavior of two new cluster complexes of the general formula WQL with phosphine ligands containing a hydrophilic carboxylic group, which makes the complexes soluble in an aqueous medium. The hydrolytic stability of the clusters' aqueous solutions allows us to investigate for the first time the influence of W-clusters on cell viability.

Synthesis and investigation of the thermal properties of [Co(NH)][Co(CO)]·3HO and [Ir(NH)][Ir(CO)].

The complexes [Co(NH)][Ir(CO)] and [Ir(NH)][Co(CO)]·HO have previously been synthesized and their thermal properties studied. The [Ir(NH)][Ir(CO)] and [Co(NH)][Co(CO)]·3HO complexes considered here are the end members in a series of possible isostructural solid solutions based on the complex salts in the Co-Ir system. Their crystal structures and thermal properties are described in detail, including temperature-dependent in situ X-ray diffraction.

Revisiting Sodium Hexafluoroiridates: Perspective Precursors for Electronic, Quantum, and Related Materials.

The following salts have been synthesized and structurally characterized: Na[IrF]·2HO (2/, = 6.6327(4), = 10.0740(6), = 5.

Self-Assembled Microporous M-HOFs Based on an Octahedral Rhenium Cluster with Benzimidazole.

Substitution of apical halide ligands in [{ReSe}X] (X = Cl, Br) by benzimidazole (bimzH) accompanied by a self-assembly process leads to the formation of microporous Re-based hydrogen-bonded organic frameworks (Re-HOFs) constructed on N-H···X hydrogen bonds and π-π-stacking interactions between bimzH ligands. Re-HOFs demonstrate sorption properties with a Brunauer-Emmett-Teller surface area of up to 443 m g and luminescence with a quantum yield and an emission lifetime of up to 0.16 and 16 μs, respectively.

Optical property trends in a family of {MoI} aquahydroxo complexes.

Luminescence is one of the key properties of octahedral molybdenum cluster complexes and the basis for most areas of their possible practical applications. Nevertheless, the factors affecting the optical properties of the clusters are insufficiently studied and establishing them will allow us to tune both absorption and emission more precisely. In this work, we obtained two new cationic [{Mo6I8}(H2O)4(OH)2](An)2·nH2O (An = NO3-, n = 3; An = OTs-, n = 2, OTs- - p-toluenesulfonate), and two neutral [{Mo6I8}(H2O)2(OH)4]·nH2O (n = 2, 12) aquahydroxo complexes.

Remarkable thermal stability of light-induced Ru-ON linkage isomers in mixed salts of a ruthenium amine complex with a -ON-Ru-F coordinate.

Two new complexes trans-(H3O)[RuNO(NH3)4F](NO3)1.5F1.5·0.

Exploration of the Structural and Vibrational Properties of the Ternary Molybdate TlBiHf(MoO) with Isolated MoO Units and Tl Conductivity.

The phase relations in the subsolidus region of the TlMoO-Bi(MoO)-Hf(MoO) system were studied with the "intersecting cuts" method. The formation of the novel ternary molybdate TlBiHf(MoO) is found in this ternary system. The compound has a phase transition at = 731 K (Δ = -3.

Tetraammineplatinum(II) and Tetraamminepalladium(II) Chromates as Precursors of Metal Oxide Catalysts.

[M(NH ) ]A (M=Pt, Pd; A=CrO , Cr O ) and [Pt(NH ) (NO )(Cr O )]NO complex salts were synthesized and characterized by a number of physicochemical methods of analysis (IR, single-crystal and powder XRD, and simultaneous thermogravimetry and differential scanning calorimetry with evolved gas analysis mass spectrometry). Thermolysis of the salts obtained in a hydrogen atmosphere proceeds with the partial reduction of chromium to a metallic state and the formation of M Cr (M=Pt, Pd) metal solid solution with a chromium content of up to 22 at % and chromium(III) oxide. The thermal decomposition of salts in an inert and oxidizing atmosphere passes through the formation stage of the MCrO phase with the delafossite structure followed by its subsequent decomposition into chromium(III) oxide and noble metal.

Synthesis, Crystal Structure, and Liquid Exfoliation of Layered Lanthanide Sulfides KLnCuS (Ln = La, Ce, Pr, Nd, Sm).

Among the great amount of known lanthanide nanoparticles, reports devoted to chalcogenide ones are deficient. The properties of such nanoparticles remain almost unknown due to the lack of simple and proper synthetic methods avoiding hydrolysis and allowing preparation of oxygen-free lanthanide nanoparticles. A liquid exfoliation method was used to select the optimum strategy for the preparation of quaternary lanthanide sulfide nanoparticles.

23-Electron Octahedral Molybdenum Cluster Complex [{MoI}Cl].

Photoactive transition metal compounds that are prone to reversible redox reactions are important for myriad applications, including catalysis, optoelectronics, and sensing. This article describes chemical and electrochemical methods to prepare cluster complex (BuN)[{MoI}Cl], a rare example of a 23 e cluster complex within the family of octahedral clusters of Mo, W, and Re. The low temperature and room temperature crystal structures; electronic structure; and the magnetic, optical, and electrochemical properties of this complex are described.

A comparative study of optical properties and X-ray induced luminescence of octahedral molybdenum and tungsten cluster complexes.

Octahedral metal cluster complexes have high potential for biomedical applications. In order to evaluate the benefits of these moieties for combined CT/X-ray luminescence computed tomography, this paper compares photoluminescence, radiodensity and X-ray induced luminescence properties of eight related octahedral molybdenum and tungsten cluster complexes [{MI}L] (where M is Mo or W and L is I, NO, OTs or OH/HO). This article demonstrates that despite the fact that molybdenum cluster complexes are better photoluminescence emitters, tungsten cluster complexes, in particular (BuN)[{WI}I], demonstrate significantly higher X-ray induced luminescence due to a combination of relatively good photoluminescence properties and high X-ray attenuation.