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- Author:
- Langenmaier, Michael; Rackl, Tobias; Johrendt, Dirk; Röhr, Caroline
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 837-848
- ISSN:
- 1865-7117
- Subject:
- X-radiation; anions; cations; chemical bonding; crystal structure; ligands; magnetic properties; magnetism; manganese; salts; selenium; sodium; tellurium; temperature
- Abstract:
- ... The six isotypic alkali ortho chalcogenido manganates A₆[MnᴵᴵQ₄] (A=Rb, Cs; Q=S, Se, Te) were synthesized – in most cases in pure phase – from stoichiometric mixtures of the manganese monochalcogenides MnQ, the elemental chalcogens and Rb₂S/Cs₂S₂ (sulfido salts) or the pure alkali elements (selenido and tellurido salts) as alkali sources at maximum temperatures between 650 and 800°C. Their hexagon ...
- DOI:
- 10.1515/znb-2018-0138
-
http://dx.doi.org/10.1515/znb-2018-0138
- Author:
- Price, Clint E.; Dantas, Ana B.; Powell, Douglas R.; Wehmschulte, Rudolf J.
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 943-951
- ISSN:
- 1865-7117
- Subject:
- aluminum; aromatic hydrocarbons; crystal structure; gallium; magnesium; nuclear magnetic resonance spectroscopy; phenol; zinc
- Abstract:
- ... The bulky phenols 2,6-Ad₂C₆H₃OH (Ad=adamantyl), A, (2,6-Ph₂CH)₂-4-Me-C₆H₂OH, B, and (2,6-Tol₂CH)₂-4-iPr-C₆H₂OH, C, react with one equivalent of Et₃M (M=Al, Ga), Bu₂Mg and Et₂Zn to afford well-defined mono-phenolate complexes (ArOMRₙ)ₘ. The aluminum and gallium phenolates derived from the very bulky phenol A are likely monomeric in the solid state. The other compounds are dimeric with bridging phen ...
- DOI:
- 10.1515/znb-2018-0176
-
http://dx.doi.org/10.1515/znb-2018-0176
- Author:
- Krupinski, Katrin; Brendler, Erica; Gericke, Robert; Wagler, Jörg; Kroke, Edwin
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 911-918
- ISSN:
- 1865-7117
- Subject:
- X-ray diffraction; aluminum; aluminum chloride; carbon; condensation reactions; isomers; nitrogen; nuclear magnetic resonance spectroscopy; quantum mechanics; silicon; stable isotopes
- Abstract:
- ... Bis(trimethylsilyl)carbodiimide (BTSC), so-called “pseudo water” because of some analogies such as similar (group)electronegativities of Me₃Si– vs. H– and –N=C=N– vs. –O–, may form two different kinds of “pseudo hydrates” of metals (M), i.e. M–N(SiMe₃)=C=N(SiMe₃) and M–N≡C–N(SiMe₃)₂, derived from its carbodiimide and cyanamide isomeric forms, respectively. With anhydrous AlCl₃ in Me₃SiCl solution ...
- DOI:
- 10.1515/znb-2018-0137
-
http://dx.doi.org/10.1515/znb-2018-0137
- Author:
- Thakur, Gohil S.; Reuter, Hans; Felser, Claudia; Jansen, Martin
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 831-836
- ISSN:
- 1865-7117
- Subject:
- X-ray diffraction; cations; geometry; oxygen; sodium; sodium hydroxide
- Abstract:
- ... A new stacking variant of sodium hexa-hydroxo platinate(IV), Na₂Pt(OH)₆, was synthesized and its structure elucidated through X-ray diffraction. The new polymorph was prepared by direct reaction of PtO₂ with an excess of NaOH solution applying elevated oxygen pressure at 300°C. The structure consists of layers of edge sharing Pt(OH)₆ and Na(OH)₆ octahedra. These layers are separated by an edge-to- ...
- DOI:
- 10.1515/znb-2018-0125
-
http://dx.doi.org/10.1515/znb-2018-0125
- Author:
- Müller-Bomke, Susanne; Sperling, Michael; Hayen, Heiko; Karst, Uwe
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 781-791
- ISSN:
- 1865-7117
- Subject:
- amines; cysteine; ions; liquid chromatography; moieties; peptides; proteins; redox potential; spectral analysis; thiols
- Abstract:
- ... A label for amino and thiol functionalities of peptides and proteins based on the activated cobaltocinium hexafluorophosphate succinimide ester (CoS) is presented. Despite the known selectivity of a succinimide ester towards amines, CoS also modifies cysteine residues under the same reaction conditions. The derivatized biomolecules were investigated using liquid chromatography with subsequent elec ...
- DOI:
- 10.1515/znb-2018-0093
-
http://dx.doi.org/10.1515/znb-2018-0093
- Author:
- Strehler, Frank; Rüffer, Tobias; Noll, Julian; Schaarschmidt, Dieter; Hildebrandt, Alexander; Lang, Heinrich
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 759-764
- ISSN:
- 1865-7117
- Subject:
- chemical structure; electrochemistry; silver
- Abstract:
- ... The synthesis of the tri-coordinated ferrocenecarbonitrile silver(I) complex [Ag(N≡CFc)₃]OTf (3) is reported. Its electrochemical behavior shows that the three ferrocenyl units are oxidized in a very close potential range. In addition, the molecular structure of 3 in the solid state is discussed, showing that silver(I) is exclusively coordinated by three ferrocenecarbonitrile molecules. ...
- DOI:
- 10.1515/znb-2018-0090
-
http://dx.doi.org/10.1515/znb-2018-0090
- Author:
- Jochim, Aleksej; Näther, Christian
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 793-801
- ISSN:
- 1865-7117
- Subject:
- anions; cations; ferrimagnetic materials; ligands; magnetism; manganese; metal ions; pyridines; thiocyanates
- Abstract:
- ... Reaction of Mn(NCS)₂ with pyrazole leads to the formation of three compounds with the compositions Mn(NCS)₂(pyrazole)₄ (1), [Mn(NCS)₂]₂(pyrazole)₆ (2) and Mn(NCS)₂(pyrazole)₂ (3). Compound 1, already reported in the literature, consists of discrete complexes, in which the Mn(II) cations are octahedrally coordinated by four pyrazole ligands and two terminally N-bonded thiocyanate anions. In compoun ...
- DOI:
- 10.1515/znb-2018-0104
-
http://dx.doi.org/10.1515/znb-2018-0104
- Author:
- Rödl, Christian; Malberg, Jennifer Bissmeyer neé; Wolf, Robert
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 895-909
- ISSN:
- 1865-7117
- Subject:
- X-ray diffraction; acetone; acetophenones; ambient temperature; amides; benzaldehyde; chemical bonding; cobalt; esters; ethers; hydrides; ligands; monitoring; nuclear magnetic resonance spectroscopy; phosphorus; positional isomers; spectral analysis; styrene; toluene
- Abstract:
- ... We report the synthesis of functionalized 1,3-bis(diphosphacyclobutadiene) complexes via the insertion of carbon-oxygen bonds of ethers, esters, aldehydes and amides into the P–Si bond of silylated complexes. Reactions of [K(tol)₂][Co(η⁴-P₂C₂R₂)₂] [[K(tol)₂][1a]: R=tBu, [K(tol)₂][1b]: R=tPent (=tert-pentyl)] with Me₃SiCl afford the trimethylsilyl-substituted derivatives [Co(η⁴-P₂C₂R₂SiMe₃)(η⁴-P₂C₂ ...
- DOI:
- 10.1515/znb-2018-0121
-
http://dx.doi.org/10.1515/znb-2018-0121
- Author:
- Hebenbrock, Marian; Müller, Jens
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 885-893
- ISSN:
- 1865-7117
- Subject:
- DNA; X-ray diffraction; aldehydes; amination; chemical structure; hydrazine; hydrazones; luminescence; melting point; rheology; spectroscopy
- Abstract:
- ... Two new cationic DNA intercalators, 3-phenyl-1-(6-phenylpyridin-2-yl)-1H-[1,2,4]triazolo[4,3-a]pyridin-4-ium (1a)⁺ and 1-phenyl-3-(6-phenylpyridin-2-yl)-3H-[1,2,4]triazolo[4,3-a]quinolin-10-ium (1b)⁺, were synthesized from 2-chloropyridine and 2-chloroquinoline, respectively, in a four-step procedure. Generation of the hydrazine, followed by condensation with an aldehyde to give a hydrazone and su ...
- DOI:
- 10.1515/znb-2018-0089
-
http://dx.doi.org/10.1515/znb-2018-0089
- Author:
- Leidich, Patrick; Mondeshki, Mihail; Barton, Bastian; Kolb, Ute; Panthöfer, Martin; Tremel, Wolfgang
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 865-871
- ISSN:
- 1865-7117
- Subject:
- Raman spectroscopy; anisotropy; hydrochloric acid; nanocrystals; nanorods; nuclear magnetic resonance spectroscopy; temperature; tin dioxide; transmission electron microscopy
- Abstract:
- ... Rutile-type nanorods of SnO₂ were obtained in a one-pot hydrothermal synthesis starting from SnCl₄·5H₂O and HCl in a temperature range between 200 and 240°C. Although the nanorods are polydisperse, the average length of the nanorods could be adjusted from 13 to 65 nm by varying of the reaction temperature. The resulting anisotropic nanocrystals were characterized using powder X-ray diffraction (PX ...
- DOI:
- 10.1515/znb-2018-0142
-
http://dx.doi.org/10.1515/znb-2018-0142
- Author:
- Poddig, Hagen; Hunger, Jens; Kamusella, Sirko; Klauss, Hans-Henning; Doert, Thomas
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 803-811
- ISSN:
- 1865-7117
- Subject:
- ambient temperature; anions; calcium; crystallization; energy-dispersive X-ray analysis; infrared spectroscopy; iron; magnetism; ruthenium; spectral analysis; thermal analysis; thermal properties
- Abstract:
- ... A new calcium iron ruthenium hydrogarnet with the approximate composition Ca₃(Ru₂₋ₓFeₓ)(FeO₄)₂₋y(H₄O₄)₁₊y (x=1, y≈0.35) has been obtained by hydrothermal synthesis under oxidizing alkaline conditions. The compound crystallizes in the cubic space group Ia3̅d (No. 230) with a lattice parameter of a=12.4804(4) Å (T=100 K) and Z=8. The octahedral site of the garnet structure is equally occupied by Ru ...
- DOI:
- 10.1515/znb-2018-0120
-
http://dx.doi.org/10.1515/znb-2018-0120
- Author:
- Sinha, Indranil; Heller, Lukas; Kösters, Jutta; Müller, Jens
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 813-817
- ISSN:
- 1865-7117
- Subject:
- copper; dimethyl sulfoxide; ligands; metal ions; nitrates; perchlorates; silver
- Abstract:
- ... Two dinuclear metal complexes bearing the purine derivative 7-methyl-6-furylpurine (1b) as a ligand are reported. In [Ag₂(1b)₂(DMSO)₂](ClO₄)₂·DMSO and [Cu₂(1b)₂(NO₃)₂], two bridging purine derivatives coordinate the two metal ions via their N3 and N9 positions. In the silver(I) complex, the coordination environment of each metal ion is completed by a DMSO ligand, whereas an additional nitrato liga ...
- DOI:
- 10.1515/znb-2018-0110
-
http://dx.doi.org/10.1515/znb-2018-0110
- Author:
- Wendt, Michael; Näther, Christian; van Leusen, Jan; Kögerler, Paul; Bensch, Wolfgang
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 773-779
- ISSN:
- 1865-7117
- Subject:
- anions; antimony; cations; ferrimagnetic materials; magnetic properties; magnetism; mixing; nickel
- Abstract:
- ... The first mixed germanato-antimonato derivative of the {V₁₄E₈O₄₂} (E=semi-metal) cluster archetype has been synthesized under hydrothermal conditions and isolated as {Ni(phen)₃}₂[α-Vᴵⱽ₁₄Sbᴵᴵᴵ₅Geᴵⱽ₃O₄₂(OH)₃(H₂O)]· ≈16H₂O (phen=1,10-phenanthroline). In the cluster anion, seven of the eight hetero-metal positions are occupied by disordered Ge/Sb atoms, while one position is fully occupied by Sb atoms ...
- DOI:
- 10.1515/znb-2018-0092
-
http://dx.doi.org/10.1515/znb-2018-0092
- Author:
- Vitzthum, Daniela; Wurst, Klaus; Huppertz, Hubert
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 919-926
- ISSN:
- 1865-7117
- Subject:
- X-ray diffraction; ambient temperature; ammonium; borates; crystal structure; crystallization; data collection; energy-dispersive X-ray analysis; geometry; indium; nitrogen; reproduction
- Abstract:
- ... The first ammonium indium borate (NH₄)InB₈O₁₄ was synthesized from indium oxide and boric acid under high-pressure/high-temperature conditions of 9 GPa and 1000°C with a Walker-type multianvil apparatus in a BN crucible. Although a reproduction of this synthesis product failed until now, we were able to determine the crystal structure via single-crystal X-ray diffraction data collected at room tem ...
- DOI:
- 10.1515/znb-2018-0141
-
http://dx.doi.org/10.1515/znb-2018-0141
- Author:
- Baran, Enrique J.; Piro, Oscar E.; Echeverría, Gustavo A.; Parajón-Costa, Beatriz S.
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 753-758
- ISSN:
- 1865-7117
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; cations; crystal structure; crystallization; electrostatic interactions; hydrogen bonding; salts
- Abstract:
- ... The crystal structure of pyridinium 6-methyl-1,2,3,-oxathiazine-4(3H)-one-2,2-dioxide [(C₅NH₆)(C₄H₄NO₄S)], for short, pyH(ace), was determined by X-ray diffraction methods. It crystallizes as a twin in the monoclinic space group P2₁/c with a=6.9878(9), b=7.2211(7), c=21.740(2) Å, β=91.67(1)° and Z=4 molecules per unit cell. The structure was determined employing 1599 reflections with I>2 σ(I) from ...
- DOI:
- 10.1515/znb-2018-0074
-
http://dx.doi.org/10.1515/znb-2018-0074
- Author:
- Eustermann, Fabian; Stegemann, Frank; Gausebeck, Simon; Janka, Oliver
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 819-830
- ISSN:
- 1865-7117
- Subject:
- aluminum; crystallization; ferrimagnetic materials; iridium; mixing; oxidation; paramagnetism; tantalum; zinc
- Abstract:
- ... Several rare earth metal containing pseudo-ternary compounds in the RE₂TAl₃ series (RE=Sc, Y, La–Nd, Sm, Gd–Lu; T=Ru, Rh, Ir) have been synthesized from the elements by arc-melting or in tantalum capsules. Within the Rh series, the compounds with RE=La–Nd crystallize in the cubic MgCu₂-type (Fd3̅m) structure. For Sm besides the cubic Laves phase also the hexagonal Laves phase (MgZn₂ type, P6₃/mmc) ...
- DOI:
- 10.1515/znb-2018-0124
-
http://dx.doi.org/10.1515/znb-2018-0124
- Author:
- Wilde, Sebastian; Stegemann, Linda; Daniliuc, Constantin G.; Koch, Tobias; Doltsinis, Nikos L.; Strassert, Cristian A.
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 849-863
- ISSN:
- 1865-7117
- Subject:
- crystals; fluorine; luminescence; moieties; platinum; solubility
- Abstract:
- ... Herein, we present three new tetradentate C^N*N^C luminophores and their platinum(II) complexes. We describe the influence of the degree of fluorination at the phenylpyridine luminophore on the photophysical properties of the monomeric species. A blue-shift can be observed with increasing number of fluorine atoms (0–6), which is related to a growing HOMO-LUMO gap that reaches a maximum for four ha ...
- DOI:
- 10.1515/znb-2018-0139
-
http://dx.doi.org/10.1515/znb-2018-0139
- Author:
- Morgenstern, Uwe; Wagner, Christoph; Merzweiler, Kurt
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 953-957
- ISSN:
- 1865-7117
- Subject:
- copper; crystal structure; nitrogen
- Abstract:
- ... The trifunctional silylamine MesSi(NHPh)₃ (Mes: 2,4,6-trimethylphenyl) was prepared by standard methods from MesSiCl₃ and LiNHPh. Lithiation of MesSi(NHPh)₃ and subsequent reaction with copper(I) benzoate afforded the nonanuclear cluster complex [Cu₉{MesSi(NPh)₃}₂ (PhCO₂)₃]·2toluene. The cluster core consists of three copper atoms which are coordinated almost linearly by the nitrogen atoms of two ...
- DOI:
- 10.1515/znb-2018-0103
-
http://dx.doi.org/10.1515/znb-2018-0103
- Author:
- Stein, Sebastian; Heletta, Lukas; Pöttgen, Rainer
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 765-772
- ISSN:
- 1865-7117
- Subject:
- X-ray diffraction; crystals; indium; magnetism; mixing; niobium; palladium; prisms; prototypes; temperature
- Abstract:
- ... The ternary rare earth transition metal-indides RE₃T₂In₄ (RE=Dy–Tm; T=Pd, Ir) were obtained from high-temperature reactions in sealed niobium ampoules. These indides adopt a hexagonal structure of the Lu₃Co₁.₈₇In₄ type (space group P6̅), a ternary ordered superstructure of the aristotype Fe₂P. The structures of three different compounds were refined from single-crystal X-ray diffractometer data: a ...
- DOI:
- 10.1515/znb-2018-0091
-
http://dx.doi.org/10.1515/znb-2018-0091
- Author:
- Engelbert, Simon; Niepmann, Dirk; Block, Theresa; Heletta, Lukas; Pöttgen, Rainer
- Source:
- Zeitschrift für Naturforschung 2018 v.73 no.11 pp. 875-884
- ISSN:
- 1865-7117
- Subject:
- X-radiation; containers; crystallization; ferrimagnetic materials; isomers; melting; niobium; paramagnetism; solid solutions; temperature
- Abstract:
- ... The stannides REIr₂Sn₄ (RE=La, Ce, Pr, Nd, Sm) were synthesized from the elements by arc melting or by induction melting in sealed niobium containers. They crystallize with the NdRh₂Sn₄ type structure, space group Pnma. The samples were characterized by powder X-ray diffraction (Guinier technique). Three structures were refined from single-crystal X-ray data: a=1844.5(2), b=450.33(4), c=716.90(6) ...
- DOI:
- 10.1515/znb-2018-0115
-
http://dx.doi.org/10.1515/znb-2018-0115