Matthias Weil

Matthias Weil
TU Wien | TU Wien · CTA

About

453
Publications
20,257
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
3,311
Citations
Introduction
Skills and Expertise

Publications

Publications (453)
Article
Full-text available
MII3(TeIVO3)2(OH)2 (M = Mg, Mn, Co, Ni) compounds crystallize isotypically in the hexagonal space group P63mc (No. 186) with unit-cell parameters of a » 13 Å, c » 5 Å. In the crystal structure, a framework with composition M3(TeO3)2(OH)1.50.5+ defines large hexagonal channels extending along [001] where the remaining OH– anions are located. Crystal...
Article
Systematic phase formation studies in the system MnII/TeIV/O/(H) using either solid‐state reactions between stoichiometric MnO:TeO2 mixtures or hydrothermal reactions under basic conditions led to crystal growth of two polymorphs (α‐, γ‐) of MnTeO3, Mn6Te5O16, Mn15(TeO3)14(OH)2 and Mn3(TeO3)2(OH)2. Although α‐MnTeO3 and Mn6Te5O16 have been reported...
Article
Full-text available
Due to their large bandgaps, multiferroic oxides, the promising candidates for overcoming the disadvantages of metal-halide perovskites as light absorbers, have so far very limited use in solar cell applications. Previous investigations demonstrate that high pressure represents an efficient tool for tuning the bandgap of multiferroic Mn 3 TeO 6 (MT...
Article
Single crystals of the two alkali metal zinc oxidotellurates(IV), Rb 2 Zn(TeO 3 )(CO 3 )·H 2 O and Na 2 Zn 2 Te 4 O 11 , were obtained by reactions of mixtures of ZnO, TeO 2 , Rb 2 CO 3 (molar ratios 2:3:6) and ZnO, TeO 2 , Na 2 CO 3 (molar ratios 2:3:10), respectively, with small amounts of water as a mineralizer. Both compounds crystallize as ord...
Article
Full-text available
The crystal structure of montanite has been determined using single-crystal X-ray diffraction on a synthetic sample, supported by powder X-ray diffraction (PXRD), electron microprobe analysis (EPMA) and thermogravimetric analyses (TGA). Montanite was first described in 1868 as Bi2TeO6·nH2O (n = 1 or 2). The determination of the crystal structure of...
Article
Herein, we present a novel approach for various asymmetric transformations of cyclic enones. The combination of readily accessible chiral diamines and sterically demanding flexible phosphoric acids resulted in a simple and highly tunable catalyst framework. The careful optimization of the catalyst components led to the identification of a particula...
Article
Full-text available
Herein, we present a novel approach for various asymmetric transformations of cyclic enones. The combination of readily accessible chiral diamines and sterically demanding flexible phosphoric acids resulted in a simple and highly tunable catalyst framework. The careful optimization of the catalyst components led to the identification of a particula...
Article
Four new MI/CuII/TeIV/O phases were obtained under hydrothermal conditions or with water as a mineralizer, and their crystal structures determined by single‐crystal X‐ray diffraction. Li2Cu2Te3O9 comprises trigonal‐pyramidal [TeO3], distorted tetrahedral [LiO4] and distorted square‐pyramidal [CuO5] units, forming a framework penetrated by channels...
Article
Full-text available
Single crystals of Cs 2 SnSi 6 O 15 , dicaesium tin(IV) hexasilicate, were serendipitously obtained from a CsCl/NaCl flux at 923 K, starting from mixtures of CaO, SnO and TeO 2 in a closed silica ampoule. The crystal structure of Cs 2 SnSi 6 O 15 is constructed from {Si 6 O 15 } 6– layers extending parallel to (101), and Cs I cations with a coordin...
Article
Synthetic and naturally occurring forms of tricopper orthotellurate, Cu II 3 Te VI O 6 (the mineral mcalpineite) have been investigated by 3D electron diffraction (3D ED), X-ray powder diffraction (XRPD), Raman and infrared (IR) spectroscopic measurements. As a result of the diffraction analyses, Cu II 3 Te VI O 6 is shown to occur in two polytypes...
Article
The crystal structure of natural krautite, MnHAsO4(H2O), was re-evaluated from a cotype specimen, confirming the previously reported monoclinic symmetry for this mineral (space group P21, Z = 8, a = 8.0093(5), b = 15.9372(10), c = 6.8065(4) Å, β = 96.534(2)° at room temperature, 5662 structure factors, 302 parameters, R1 = 0.0295, wR2 = 0.0770). Al...
Article
Full-text available
A new mononuclear hexachlororhenate complex salt ((2-ppyH)2[ReCl6], where 2-ppyH⁺ = 2-phenylpyridinium cation) was synthesized and structurally characterized by X-ray crystallography. The hexachlororhenate complex ([ReCl6]²¯) was utilized as an efficient catalyst for the electrocatalytic dechlorination of dichloromethane (CH2Cl2). The cyclic voltam...
Article
Full-text available
Tin(IV) trioxidotellurate(IV), SnTe 3 O 8 , is a member of the isotypic M IV Te IV 3 O 8 ( M = Ti, Zr, Hf, Sn) series crystallizing with eight formula units per unit cell in space group Ia \overline{3}. In comparison with the previous crystal structure model of SnTe 3 O 8 based on powder X-ray diffraction data [Meunier & Galy (1971). Acta Cryst. B...
Article
Full-text available
Single-crystals of lead(II) oxoarsenates(V) were grown from the melt (Pb2As2O7), from solution (Pb(H2AsO4)2 and Pb5(AsO4)3OH), and under hydrothermal conditions (NaPb4(AsO4)3). Crystal structure refinements from single-crystal X-ray diffraction data revealed isotypism for both Pb2As2O7 and Pb(H2AsO4)2 with the corresponding barium and phosphate pha...
Article
Full-text available
Various hydrous ammonium metatungstate phases (NH4)6[H2W12O40]·XH2O (AMT-X) have been obtained in the form of single crystals, using supersaturated solutions, antisolvent crystallization, and partial dehydration as strategies for crystal growth. On the basis of laboratory X-ray diffraction data, the crystal structures of the hydrous phases with X =...
Article
A proof-of-concept for implementing ultrathin dielectric/metal/dielectric layers of AZO/Ag/AZO (AZO: Al-doped ZnO) as a transparent electrode in the earth-abundant, kesterite-type Cu2ZnSnS4 (CZTS) photovoltaic device, is presented. In a first step, a set of optical simulations for designing the layer sequence and the optimum thickness of AZO/Ag/AZO...
Article
Full-text available
Crystals of the hydrous magnesium orthotellurate(VI) Mg(H 2 O) 2 [TeO 2 (OH) 4 ] were grown by slow diffusion of an aqueous MgCl 2 solution into a KOH/Te(OH) 6 solution immobilized in gelatin. The crystal structure is built of sheets of nearly regular corner-sharing [MgO 6 ] and [TeO 6 ] octahedra. Half of the bridging O atoms are connected to diso...
Article
The magnetic properties of phase-pure solid solutions of Co3-xZnxTeO6 are investigated using magnetometry (single crystals) and neutron diffraction (polycrystalline powders), and compared to results of detailed crystallographic studies. There are five unique Co sites in Co3TeO6, including a tetrahedrally coordinated Co2 site which Zn preferentially...
Article
New dye functionalized polymeric carbon nitrides with increased visible light response were designed and fabricated. In this research, Rose Bengal (RB) was immobilized on g-C3N4 (CN) and carboxylated g-C3N4 (CCN) through the formation of a covalent bond. The covalent bonding of Rose Bengal to the CN or CCN resulted in the transfer of electrons from...
Article
Full-text available
Single crystals of Zn 2 (HTeO 3 )(AsO 4 ), dizinc(II) hydroxidodioxidotellurate(IV) oxidoarsenate(V), were obtained as one of the by-products in a hydrothermal reaction between Zn(NO 3 ) 2 ·6H 2 O, TeO 2 , H 3 AsO 4 and NH 3 in molar ratios of 2:1:2:10 at 483 K for seven days. The asymmetric unit of Zn 2 (HTeO 3 )(AsO 4 ) contains one Te (site symm...
Article
Full-text available
The crystal structure of the mineral kröhnkite, Na 2 Cu(SO 4 ) 2 (H 2 O) 2 , contains infinite chains composed of [CuO 4 (OH 2 ) 2 ] octahedra corner-linked with SO 4 tetrahedra. Such or similar tetrahedral–octahedral `kröhnkite-type' chains are present in the crystal structures of numerous compounds with the composition A n M ( X O 4 ) 2 (H 2 O) 2...
Article
For four decades fairbankite was reported to have the formula Pb2+(Te4+O3), but repeated attempts to isolate fairbankite crystals for structural determination found only the visually similar cerussite and, more rarely, anglesite. The crystal-structure determination of fairbankite using single-crystal X-ray diffraction, supported by electron micropr...
Article
Full-text available
During a systematic study of monofluorophosphates, i.e., compounds comprising the tetrahedral anion PO3F2−, twelve, for the most part new, compounds were obtained from aqueous solutions. Crystal structure refinements based on single crystal X-ray diffraction data revealed the previously unknown crystal structures of CdPO3F(H2O)2, Cr2(PO3F)3(H2O)18....
Article
Full-text available
In comparison with the previous structure determination of K 2 Mg 3 (OH) 2 (SO 4 ) 3 (H 2 O) 2 , dipotassium trimagnesium dihydroxide tris(sulfate) dihydrate, from laboratory powder X-ray diffraction data [Kubel & Cabaret-Lampin (2013). Z. Anorg. Allg. Chem. 639 , 1782–1786], the present redetermination against CCD single-crystal data has allowed f...
Article
The previously unknown crystal structure of pingguite was determined and refined from laboratory X-ray powder diffraction data using a synthetic sample. Additional single crystal diffraction of natural pingguite confirms that the crystal structure of the synthetic sample is identical to the natural mineral. This new crystal structure calls for a re...
Article
Three thallium(I) diphosphates with compositions Tl4P2O7, Tl2H2P2O7, Tl2H2P2O7(H2O)0.5 and the mixed-valent thallium(I,III) diphosphate Tl2P2O7 (= TlITlIIIP2O7) were obtained from aqueous solutions using an ion-exchange resin (Tl4P2O7), through thermal treatment of TlH2PO4 at 190 °C and subsequent crystallization from aqueous solutions (Tl2H2P2O7,...
Article
Three thallium(I) diphosphates with compositions Tl 4 P 2 O 7 , Tl 2 H 2 P 2 O 7 , Tl 2 H 2 P 2 O 7 (H 2 O) 0.5 and the mixed-valent thallium(I,III) diphosphate Tl 2 P 2 O 7 (= Tl I Tl III P 2 O 7 ) were obtained from aqueous solutions using an ion-exchange resin (Tl 4 P 2 O 7 ), through thermal treatment of TlH 2 PO 4 at 190 °C and subsequent crys...
Article
Full-text available
The crystal structure of thallium(I) catena -polyphosphate, TlPO 3 , contains a polyphosphate chain extending parallel to [010] with a repeating unit of two phosphate tetrahedra. The Tl I atom is located in-between the polyphosphate chains and is bonded by oxygen atoms in a distorted [6 + 1] coordination in the form of a monocapped prism, with the...
Article
Full-text available
The caesium phosphates Cs 3 (H 1.5 PO 4 ) 2 (H 2 O) 2 and Cs 3 (H 1.5 PO 4 ) 2 were obtained from aqueous solutions, and Cs 4 P 2 O 7 (H 2 O) 4 and CsPO 3 from solid state reactions, respectively. Cs 3 (H 1.5 PO 4 ) 2 , Cs 4 P 2 O 7 (H 2 O) 4 , and CsPO 3 were fully structurally characterized for the first time on basis of single-crystal X-ray diff...
Article
Crystal chemistry of the variscite and metavariscite groups: Crystal structures of synthetic CrAsO4⋅2H2O, TlPO4⋅2H2O, MnSeO4⋅2H2O, CdSeO4⋅2H2O and natural bonacinaite, ScAsO4⋅2H2O - Uwe Kolitsch, Matthias Weil, Vadim Kovrugin, Sergey V. Krivovichev
Article
Full-text available
Nitron is the trivial name of (1,4-diphenyl-4 H -1,2,4-triazol-3-yl)phenylamine (C 20 H 16 N 4 ), a triazole derivative used as an analytical reagent for gravimetric analysis of the nitrate anion. The crystal structure of the difluorophosphate salt of Nitron, 3-anilino-1,4-diphenyl-1 H -1,2,4-triazol-4-ium difluorophosphate, C 20 H 17 N 4⁺ ·PO 2 F...
Article
Full-text available
Single crystals of cadmium pentaoxidoditellurate(IV), CdTe 2 O 5 , were obtained as by-products in a hydrothermal reaction of Cd(NO 3 ) 2 ·4H 2 O, TeO 2 , H 6 TeO 6 and NH 3 (molar ratios 2:1:1:6) at 483 K for seven days. The crystals represent a different polymorph (henceforth referred to as the β -form) than the α -CdTe 2 O 5 crystals grown from...
Article
Three new copper–zinc–tellurites, Zn4Cu(TeIVO3)4Cl2, Cu2Zn2(TeIVO3)2(SO4)(OH)2·H2O and Cu2Zn(TeIVO4)(SO4)·H2O (henceforth I, II and III), have been synthesised under mild hydrothermal conditions (473 K). Each compound crystallises in a new structure type, and additionally, II and III represent the first two ever reported copper–zinc–tellurite–sulph...
Article
Full-text available
Single crystals of Ni 3 (TeO(OH) 2 ) 2 (PO 4 ) 2 , trinickel(II) bis[(oxidodihydoxidotellurate(IV)] bis(phosphate),were obtained by hydrothermal synthesis at 483 K, starting from NiCO 3 ·2Ni(OH) 2 , TeO 2 and H 3 PO 4 in a molar ratio of 1:2:2. The crystal structure of Ni 3 Te 2 O 2 (PO 4 ) 2 (OH) 4 is isotypic with that of Co 3 Te 2 O 2 (PO 4 ) 2...
Article
Full-text available
The monoclinic crystal structure of Na 2 SO 3 (H 2 O) 7 is characterized by an alternating stacking of (100) cationic sodium–water layers and anionic sulfite layers along [100]. The cationic layers are made up from two types of [Na(H 2 O) 6 ] octahedra that form linear ¹∞ [Na(H 2 O) 4/2 (H 2 O) 2/1 ] chains linked by dimeric [Na(H 2 O) 2/2 (H 2 O)...
Article
[Cu2ZnTeO4]²⁺[SO4·H2O]²⁻ crystallizes as a category IV order‒disorder (OD) structure with two kinds of nonpolar layers with the formal composition [Cu2ZnTeO4]²⁺ and [SO4·H2O]²⁻, respectively. Reflection symmetry that is only valid for the [Cu2ZnTeO4]²⁺ layers leads to two ways of placing the [SO4·H2O]²⁻ layers. Two of the polytypes are of a maximum...
Article
Systematic phase formation studies in the system Tl/As/O/(H) led to crystal growth of some previously reported and also to numerous novel hydrous and anhydrous phases. Their crystal structures were determined by single crystal X-ray diffraction. This includes the low-temperature forms of TlIH2AsO4 (isotypic with the corresponding phosphate homologu...
Article
Full-text available
The tricyclic core in the title compound, C 26 H 34 O 4 Si 2 , shows disorder of the furan ring and deviates slightly from planarity, with the largest displacement from the least-squares plane [0.166 (2) Å] for the major disordered part of the methine C atom. To this C atom the likewise disordered vinyl group is attached, lying nearly perpendicular...
Article
Full-text available
Deuterated potassium orthophosphate heptahydrate, K 3 PO 4 ·7D 2 O, crystallizes in the Sohnke space group P 2 1 , and its absolute structure was determined from 2017 Friedel pairs [Flack parameter 0.004 (16)]. Each of the three crystallographically unique K ⁺ cations is surrounded by six water molecules and one oxygen atom from the orthophosphate...
Article
Crystals of the first synthetic copper tellurite arsenate, Cu II5 (Te IV O 3 ) 2 (As V O 4 ) 2 [systematic name pentacopper(II) bis-oxotellurate(IV) bis-oxoarsenate(V)], were grown by the chemical vapour transport method and structurally determined using single-crystal X-ray diffraction. Cu II5 (Te IV O 3 ) 2 (As V O 4 ) 2 possesses a novel structu...
Article
Full-text available
Divalent metal oxidoarsenates(V) with compositions M(H2AsO4)2(H3AsO4)2 (M = Mg, Mn, Co, Ni), M(HAsO4)(H3AsO4)(H2O)0.5 (M = Mn, Cd) and Zn(HAsO4)(H3AsO4) were obtained from solutions containing an excess of arsenic acid. Single crystal X-ray diffraction revealed isotypism of the M(H2AsO4)2(H3AsO4)2 (M = Mg, Mn, Co, Ni) structures with the known Cu a...
Article
Full-text available
The use of pre-synthesised Cu 2 ZnSnS 4 (CZTS) sub-micron powders as a raw material for preparing CZTS thin films for photovoltaic absorber applications is examined. A challenge in preparing photovoltaic device-relevant CZTS films from submicron powders is producing a dense CZTS film by a sintering process. This is due to the nature of non-unimodal...
Article
Full-text available
In this study, the bandgap energy of the multiferroic oxide Mn3TeO6 is successfully reduced by 39% from 3.15 eV to 1.86 eV, accompanied by a phase transition at high pressures. The high-pressure phase with smaller bandgap energy is quenchable to ambient conditions and represents a promising light-harvesting material for photovoltaic applications.
Article
Counterions have a significant effect on the efficiency of the deoxydehydration (DODH) reaction. Four perrhenate salts, Z⁺ReO4⁻ (Z = Na⁺, K⁺, NH4⁺, and Bu4N⁺), were tested in the DODH reaction of a vicinal diol in the presence of PPh3 as the reductant. In addition, a new perrhenate salt, (2-ppyH)[ReO4] (2-ppyH⁺ = 2-phenylpyridinium cation), has bee...
Article
Full-text available
A new form of NaMnAsO4, sodium manganese(II) orthoarsenate, has been obtained under hydro-thermal conditions, and is referred to as the β-polymorph. In contrast to the previously reported ortho-rhom-bic α-polymorph that crystallizes in the olivine-type of structure and has one manganese(II) cation in a distorted octa-hedral coordination, the curren...
Article
Single crystals of manganese pyro-arsenite [systematic name: dimanganese(II) pentaoxidodiarsenate(III)], Mn2As2O5, were grown under hydrothermal conditions. Mn2As2O5 adopts a novel structure type as revealed by single crystal X-ray diffraction from a crystal twinned by pseudo-merohedry. The crystal structure comprises of five independent MnII sites...
Article
A long-term metabolite of the doping agent oxymetholone (OXM-M2, 17β-hydroxymethyl-2,17α-methyl-18-norandrost-13-en-3-one) which has been identified by GC-MS/MS was synthesized from commercially available materials. Two efficient synthetic routes to access both C-17 epimers of tentative metabolites were developed. The identity and molecular configu...
Article
Pb 2 BTeO 6 (B = Co, Mn, Cd, Ca)and Pb 7.47 Sr 3.53 Te 4 O 23 were synthesized by solid state reactions, starting from TeO 2 , and precursors of lead(II)oxide and the respective metal oxides. Structure determinations from single crystal X-ray data at room temperature revealed that Pb 2 CoTeO 6 and Pb 2 CoTeO 6 adopt the B site ordered cubic double...
Article
Full-text available
The crystal structure of barium hexahydrogen cyclo -tetradecaoxidotetraarsenate(V), was redetermined. In comparison with the previous determination [Blum, Durif & Guitel. (1977). Acta Cryst. B 33 , 3222–3224] the positions of the hydrogen atoms were located, and more precise data in terms of bond lengths and angles were obtained. The crystal struct...
Article
Full-text available
Single crystals of dicalcium octaoxidotritellurate(IV), Ca 2 Te 3 O 8 , were obtained from a CsCl/NaCl melt with CaO and TeO 2 as educts in the molar ratio of 1:2. Ca 2 Te 3 O 8 crystallizes isotypically with Pb 3 Te 2 O 8 and is comprised of two unique Ca, four Te and eight O sites. One calcium cation has eight and the other nine coordination part...
Article
Full-text available
Four incorrect figure citations in this Letter have been corrected online.
Article
Full-text available
Phase-formation studies in the system CdO–TeO 3 using a CsCl/NaCl melt at comparatively low temperatures revealed that tricadmium orthotellurate(VI), Cd 3 TeO 6 , is dimorphic. The new modification of Cd 3 TeO 6 is denoted as the β-form and adopts the rhombohedral Mg 3 TeO 6 structure type with one Cd and two O sites in general positions, and two T...
Article
Full-text available
The asymmetric unit of the methanol solvate of sodium naproxen, systematic name: sodium (2 S )-2-(6-methoxynaphthalen-2-yl)propanoate methanol sesquisolvate, Na ⁺ ·C 14 H 13 O 3⁻ ·1.5CH 3 OH, comprises two formula units of the molecular salt and three methanol molecules. One of the sodium cations exhibits a coordination number of six and is bonded...
Article
The determination of the crystal structure of the M phase, (Mn x Zn 1– x ) 2 V 2 O 7 (0.75 < x < 0.913), in the pseudobinary Mn 2 V 2 O 7 –Zn 2 V 2 O 7 system for x ≃ 0.8 shows that the previously published triclinic unit-cell parameters for this thortveitite-related phase do not describe a true lattice for this phase. Instead, single-crystal X-ray...
Article
The crystal structure of struvite-type KMgAsO 4 (H 2 O) 6 has been redetermined from single crystal X-ray diffraction data at room temperature. The previous structure model based on powder X-ray diffraction data was confirmed with higher precision and accuracy and with all hydrogen atoms located. KMgAsO 4 (H 2 O) 6 undergoes a reversible phase tran...
Article
Two modifications of the oxotellurate(VI) PbCuTeO5 were isolated as single crystals from product mixtures obtained from solid state reactions, whereas single crystals of the oxotellurates(IV) PbCuTe2O6 and [Pb2Cu2(Te4O11)](NO3)2 were grown under hydrothermal conditions. The crystal structures of all compounds comprise of characteristic coordination...
Article
Full-text available
The inversion of inhomogeneous physical states has great technological importance; for example, active noise reduction relies on the emission of an inverted sound wave that interferes destructively with the noise of the emitter1, and inverting the evolution of a spin system by using a magnetic-field pulse enables magnetic resonance tomography2. In...
Article
Full-text available
Single crystals of Ba 2 K 2 Te 2 O 9 (dibarium dipotassium nonaoxidoditellurate), (I), Ba 2 KNaTe 2 O 9 (dibarium potassium sodium nonaoxidoditellurate), (II), and Ba 2 CaTeO 6 (dibarium calcium hexaoxidotellurate), (III), were obtained from KNO 3 /KI or KNO 3 /NaNO 3 flux syntheses in platinum crucibles for (I) and (II), or porcelain crucibles for...
Article
A new mononuclear Ru(II) complex, [Ru(phen-dione)(CH3CN)4](PF6)2 (phen-dione = 1,10-phenanthroline-5,6-dione), (I), has been synthesized and structurally characterized revealing a distorted octahedral environment around the central ruthenium(II) cation. The electrocatalytic activity of the complex was investigated for the reduction CO2 to CO in an...
Article
The crystal structure of the oxotellurate(IV) chloride KCa 3 Te 5 O 12 Cl 3 is built up of [KTe 5 O 12 ] ³⁻ layers sandwiched by layers of Cl ⁻ and Ca ²⁺ ions. The structure can be considered as a twelvefold superstructure with occupational modulation of the K/Te positions. The electron lone-pairs of the Te(IV) atoms are directed towards the free s...
Article
Duplex steel 1.4462 and Ni-based alloy Centralloy ET45 micro were tested in HCl- and H2S-containing atmospheres at 680 °C for 24, 72 and 240 h. Corroded samples were investigated by metallography, SEM/EDX and XRD. Corrosion products on the surface consisted of Cr2O3 and chromium sulfides. Beneath this surface layer, iron and chromium chloride were...
Article
Full-text available
In comparison with the previous structure determination of poly[diaquadi-μ-formato-nickel(II)], [Ni(HCOO) 2 (H 2 O) 2 ] n , based on Weissenberg film data [Krogmann & Mattes (1963). Z. Kristallogr.118 , 291–302], the current redetermination from modern CCD data revealed the positions of the H atoms, thus making a detailed description of the hydroge...
Article
Full-text available
The long-term metabolite “M3” (4-chloro-17β-hydroxymethyl-17α-methyl-18-norandrost-13-en-3-ol) of the common doping agent DHCMT, has thus far been detected via GC/MS-MS, creating ambiguities concerning its absolute configuration. The structure was elucidated via synthesis of all eight possible stereoisomers with 17β-hydroxymethyl configuration. The...
Article
The effects of gaseous hydrogen chloride and hydrogen sulphide on the high-temperature corrosion of the austenitic SS. S31400 and the duplex steel S32205 were investigated in an atmosphere without molecular O2. The testing gas atmosphere consisted of 3.8 vol% HCl, 1.9 vol% CO2, 0.3 vol% CO, 2.8 vol% H2, 0.02 vol% H2S, bal. N2. It showed a similar c...
Article
Full-text available
In previous studies, it has been reported that the crystalline product precipitated from the reaction of aqueous solutions of lead(II) salts with sodium oxotellurate(IV) is hydrous lead(II) oxotellurate(IV); however, there have been conflicting specifications of the water content, and the crystal structure of the product is yet undetermined. During...
Article
Full-text available
The synthesis of cationic mono oxo Mo(IV) PNP pincer complexes of the type [Mo(PNPMe-iPr)(O)X]+ (X = I, Br) from [Mo(PNPMe-iPr)(CO)X2] is described. These compounds are coordinatively unsaturated and feature a strong MoO triple bond. The formation of these complexes proceeds via cationic 14e intermediates [Mo(PNPMe-iPr)(CO)X]+ and requires both mo...
</