bluuebunny/crossref_metadata_2025_split huggingface dataset:
Das JerJ-Butyl-Kation in Lösungen von Aluminiumbromid in Mono-, Di- und Tribrommethan / The terf-Butyl-Cation in Solutions of Aluminium Bromide in Mono-, Di- and Tribromomethane
Authors: Brüggeller Peter , Mayer Erwin 
Published: February 2015

Abstract
The tert-butyl cation is formed from tert-BuBr in concentrated solutions of AlBr3 in CH3Br, CH2Br2 and CHBr3 and was characterized by 1H NMR spectroscopy. Stabilization of the cation depends strongly on the AlBr3 concentration: in CH3Br saturated with AlBr3, C(CH3)3+ is formed in 80% yield; in dilute solutions of AlBr3 in CH3Br the usual de-composition occurs. In saturated solutions of AlBr3 in CH2Br2 and CHBr3 the C(CH3)3+ yield is 60 and 40%, resp. The concentration of the cation decreases in all three solvents by 20 to 30% within 10 days at room temp. In concentrated solutions of AlBr3 in CH3Br the formation of the methyl-tert-butylbromonium ion as a rapidly equilibrating species is suggested. The 1H NMR chemical shift of C(CHs)3+ in the presence of AlBr3 (δ = 5.19 in CHsBr, δ = 5.23 in CH2Br2, δ = 5.35 in CHBr3) indicates strong deshielding in comparison with shifts in SbF5 and SbF5/SO2
Darstellung und Eigenschaften trimerer Chlorotellurate(IV). Kristallstruktur von (C6H5)CTe3Cl13/ Preparation and Properties of Trimeric Chlorotellurates(IV). Crystal Structure of (C6H5)3CTe3Cl13
Authors: Krebs Bernt , Paulat Volker 
Published: February 2015

Abstract
The trimeric chlorotellurate(IV) ion Te3Cl13- is obtained in benzene solution as a degradation product of cubane-like tetrameric tellurium(IV) chloride Te4Cl6 and can be isolated by crystallization in the form of salts with large cations. The crystal structure of the triphenyl-methyl salt (C6H5)3CTe3Cl13 (P21/c, a = 1109.5, b = 1644.4, c = 2043.9 pm, β = 114.50°) shows the Te3Cl13- ion to have approximate C3V symmetry; as a fragment of the Te4Cl16 cube it consists of three edge-sharing octahedra with a central triply bridging Cl. Bond distances Te-Cl (tripl.br.) 292.4-298.4, Te-Cl (doubl.br.) 270.6-286.3, Te-Cl (term.) 232.0-238.8 pm. The vibrational spectrum of Te3C13- is discussed.
Phosphoraustausch im Cyclophosphazenring bei der Reaktion Hydridocyclotri(phosphazen)/Perthiophosphonsäureanhydrid [1] / Exchange of Phosphorus in the Cyclophosphazene Ring in the Reaction Hydridocyclotri (phosphazene )/Perthiophosphonic Anhydride [1]
Authors: Högel Johann , Schmidpeter Alfred 
Published: February 2015

Abstract
The 2-hydrido-2-methyl-cyclotri(phosphazene) (1) reacts with perthiophosphonic anhydrides (2) to give cyclotri(phosphazene)diene-2-thiones (3). When 2 contains R ≠ CH3, mixtures of CH3-3 and R-3 are obtained. This must be due to a competition of sulfur transfer from 2 to 1 and the insertion of a RPS unit from 2 into 1 involving the opening and reclosure of the N3P3 ring. The unusual lability of the cyclotri (phosphazene) ring probably arises from the prototropy in 1
Darstellung und Kristallstruktur von BaMn2Sb2, BaZn2Sb2 und BaCd2Sb2 / Preparation and Crystal Structure of BaMn2Sb2 , BaZn2Sb2 and BaCd2Sb2
Authors: Brechtel Erwin , Cordier Gerhard , Schäfer Herbert 
Published: February 2015

Abstract
The new compounds BaMn2Sb2, BaZn2Sb2 and BaCd2Sb2 have been prepared and structurally characterized. The crystallographic data are: BaMn2Sb2: I4/mmm, a = 441.8 ± 0.6 pm, c = 1440 ± 2 pm, ThCr2Si2 structure, BaZn2Sb2 : Pnma, a = 1053.9 ± 0.8 pm, b = 450.2 ± 0.2 pm, c = 1163.9 ± 0.8 pm, BaCu2S2 structure, BaCd2Sb2: P3̅m 1 , a = 477 ± 1 pm, c = 808 ± 2 pm, Ce2O2S structure
Umsetzungen von Metall- und Metalloidverbindungen mit mehrfunktionellen Molekülen, XXIV [1] Synthese von Sulfonamidoboranen und Sulfonamidosilanen / Reactions of Metal and Metalloid Compounds with Polyfunctional Molecules, XXIV [1] Synthesis of Sulfonamidoboranes and Sulfonamidosilanes
Authors: Maringgele Walter , Meiler Anton 
Published: February 2015

Abstract
The reaction of trimethylsilylsulfonamides with halodiorganylboranes leads to the corresponding sulfonamidoboranes and halotrimethylsilane. Trimethylsilylsulfonamides are prepared by reaction of the corresponding sulfonyl chlorides with primary amines, followed by the addition of chlorotrimethylsilane in the presence of excess triethylamine. 1H, 11B NMR spectra and mass spectra are reported
Zur Thioketalisierung mit Tris(ethylthio)boran, II / Synthesis of Thioketals with Tris(ethylthio)borane, II
Authors: Klein Helmut A. 
Published: February 2015

Abstract
Tris(ethylthio)borane (1) is a convenient donor for ethanthiol, esp. for the ketalization of carbonyl compounds. With amides, amide thioacetals are obtained
Substituenteneinfiüsse auf die Geschwindigkeit der Photobilin-Bildung / Substituent Effects upon the Rate of Photobilin Formation
Authors: Jürgens Uwe , Brockmann Hans 
Published: February 2015

Abstract
The structural requirements for the regioselective photochemical ring-opening of chlorin derivatives and the corresponding rate of formation of the pertinent photobilins are reported. The structure of one of the photobilins is verified by X-ray analysis.
Donor-Akzeptorkomplexe des ReO3Cl mit Metallchloriden / Donor Acceptor Complexes of ReO3Cl with Metal Chlorides
Authors: Lössberg Rainer , Dehnicke Kurt 
Published: February 2015

Abstract
ReO3Cl with AICI3 and NbCls, respectively, forms the donor acceptor complexes
AlCl3 · ReO3Cl and NbCl5 • ReO3Cl. According to their IR spectra the complexes contain Re = O-Metal bridges. GaCl3 also forms a weak donor acceptor complex with ReO3Cl, which catalyzes the reaction of ReO3Cl with CCl4 forming COCl2
Abhängigkeit der Calcium-Isotopenseparation bei der Ionenaustauschchromatographie von der HNO3-Elutionsmittelkonzentration / Calcium Isotope Separation by Ion Exchange Chromatography in Dependence on the HNO3 Eluant Concentration
Authors: Heumann Klaus G. , Klöppel Helmut 
Published: February 2015

Abstract
Using a strongly acidic cation exchanger resin, the dependence of the calcium isotope separation on the HNO3 eluant concentration is investigated on column experiments. The elementary separation effect of the isotope ratios 44Ca/40Ca and 48Ca/40Ca is determined. Up to HNO3 concentrations of about 1.5 M the lighter calcium isotopes are enriched in the resin phase, whereas, using more concentrated HNO3 solutions, the heavier isotopes are enriched in the ion exchanger. A comparison of these results with those using hydrochloric acid and perchloric acid show, that there is a strong dependence of the isotope separation on the concentration and the counter ion of the eluant solution
Molecular Rearrangements, XV Photolysis and Thermolysis of N-a- and ß-Phenethyl Toluidines
Authors: Badr M. Z. A. , Aly M. M. , E l - N a g g a r G. M. , Fahmy A. M. 
Published: February 2015

Direct irradiation of each of N-a- and /3-phenethyl toluidine in carbon tetrachloride solution leads t o homolysis of the phenethyl-nitrogen bond forming phenethyl and arylamino free radicals. The fates of such radicals are discussed in terms of the identified products.
Thermolysis of the title compounds either alone or in presence of aromatic solvents such as isoquinoline or ß-naphthol leads, in addition to the products obtained from photolysis, to partial attack of the so formed radicals on the solvent nuclei forming simple substitution products or polynuclear compounds of the indole, acridine and carbazole series
Funktionelle Trimethylphosphinderivate, XI Trisphosphinomethane (R2P)3CH und isomere Phosphorylide R2P-PR2 =CH-PR2 /Functional Derivatives of Trimethylphosphine, XI Trisphosphinomethanes (R2p)3CH and Isomeric Phosphorus Ylids R2P-PR2=CH-PR2
Authors: Karsch Hans H. 
Published: February 2015

Abstract
The metallated diphosphinomethanes Li[R2PCHPR2′] (R,R′ = CH3, C6H5) react with R2 ″PCl (R ″ = CH3, C6H5) to give trisphosphinomethanes, [(R2P)(R2′P)(R2″P)]CH. The reaction is shown to proceed via electrophilic attack at the phosphorus of Li[R2PCHPR2′]by formation of the phosphorus ylids R2 ″P-PR2=CH-PR2′under certain conditions, mainly controlled by steric effects.These ylids slowly rearrange to the trisphosphino- methanes in solution,but with R ″=tC4H9,the ylids are stable.
The compounds are characterized by 1H 31P and 13C NMR spectra.
Übergangsmetall-Carbin-Komplexe, L Darstellung und nukleophile Substitution von Tetracarbonyl(organylcarbin)tetrafluoroborato-metall-Komplexen /Transition Metal Carbyne Complexes, L Preparation and Nucleophilic Substitution of Tetracarbonyl(organylcarbyne)tetrafluoroborato Metal Complexes
Authors: Fischer Ernst Otto , Gammel Franz J. 
Published: February 2015

Abstract
Pentacarbonyl[methoxy(organyl)carbene]chromium complexes react in boron trifluoride dimethyletherate in the presence of BF3 to form tetracarbonyl(organylcarbyne)-tetrafluoroborato complexes of chromium. In the analogous tungsten complex BF4(CO)4WCC6H5 the BF4
--ligand is displaced by nucleophilic reagents. With As(C6H5)3 and t-C4H9NC the cationic derivatives [As(C6H5)3(CO)4WCC6H5][BF4]as well as [t-C4H9NC(CO)4WCC6H5][BF4]are obtained.
Präparative, spektroskopische und kristallographische Untersuchungen an Phosphinato-Komplexen des Rheniums mit verschiedenen einzähnigen Liganden /Preparative, Spectroscopic and Crystallographic Investigations on Phosphinato Complexes of Rhenium with Various Unidentate Ligands
Authors: Lindner Ekkehard , Trad Sadek , Hoehne Sigurd , Oetjen Hans-Henning 
Published: February 2015

Abstract
The stable phosphinato complexes [μ-R2PO2Re(CO)3L]n (1, 2b-f) [L = THF (a), py (b), NH3 (c), P(C6H5)3 (d), As(C6H5)3 (e), P(C6H11)3 (f), O(C2H5)2 (g)] are obtained by addition of the ligands L to the compounds [μ-R2PO2Re(CO)3]n (1, 2) [R = CH3 (1), C6H5 (2)] at 20-40 °C (1, 2c: -35 °C). 1, 2b, d, e are also formed when THF in 1, 2a is substituted by the ligands b, d, and e. The unstable ether adducts 1, 2 g which result photochemically from Re2(CO)10 and the acids R2PO2H, are transformed to 1, 2 by elimination of ether. At 20 °C 1, 2 a react with liquid ammonia to give the ionic complexes [(OC)3Re(NH3)3][O2PR2] (1, 2h). On the basis of their mass and vibrational spectra, and a crystallographic in­vestigation, the methyl [1a-f] and phenyl compounds [2a-f] are dimeric and oligomeric, respectively. The rhenium atoms are bridged via R2PO2
- ligands (phosphinato-O,O′). 1a crystallizes monoclinic in the space group C2/m with Z = 2.
Neue ternäre Boride der Erdalkalimetalle mit Rhodium und Iridium /New Ternary Borides of the Alkaline Earth Metals with Rhodium and Iridium
Authors: Jung Walter 
Published: February 2015

The ternary borides SrRh2B2, SrIr2B2, BaRh2B2, BaIr2B2 and Ba7lr12Bi12 were prepared and structurally characterized.
The crystallographic data are (pm):
SrRh2B2 : Fddd, a = 1067.2, b= 939.9, c =598.9, Z = 8.
SrIr2B2 : Fddd, a = 1072.3, b = 940.4, c =602.7, Z = 8.
BaRh2B2 : I4/mmm, a = 391.5, c = 1125.0, c/a = 2.874, Z = 2.
BaIr2B2 : I4/mmm, a = 393.5, c = 1140.7, c/a = 2.899, Z = 2.
Ba7Ir12Bi12 : R3̄m, a = 1522.2, c = 835.8, c/a = 1.821, Z = 3.
SrIr2B2 and SrRh2B2 are isostructural with CaIr2B2 and CaRh2B2, while BaRh2B2 and BaIr2B2 crystallize in the ThCr2Si2-type. Ba7lr12Bi2 has a new structure which contains structural elements of the compound SrIr2B2.
Li3Ce5Ge4, ein neuer Typ eines ternären Germanids des Lithiums mit Selten-Erd-Metallen Li3Ce5Ge4, a New Type of Ternary Compound of Lithium with Rare Earth Metal and Germanium
Authors: Czybulka Axel , Schuster Hans-Uwe 
Published: February 2015

Abstract
The ternary compound Li3Ce5Ge4 has been prepared and structurally characterized. It crystallizes orthorhombically (a = 1885 pm, b = 694.7 pm, c = 447.6 pm, space group B 2 mm). The structure shows germanium chains in a three-dimensional network of metal atoms.
Darstellung und Molekiilstruktur von 1.3.5.7-Tetraaza-2.4.6.8-tetrasila-bicyclo [3.3.0] octan/ Preparation and Molecular Structure of 1,3,5,7-Tetraaza-2,4,6,8-tetrasila-bicyclo[3,3,0]octane
Authors: Clegg William , Hluchy Hans , Klingebiel Uwe , Sheldrick George M. 
Published: February 2015

Abstract
The structure of the title compound 1 has been determined from X-ray diffractometer data. 1 is formed by reaction of dilithiated hydrazine with N,N-bis(fluorodimethylsilyl)- 2,4,6-trimethylaniline. 1 has approximate D2 symmetry with planar nitrogen atoms. A >N-N<-unit is shared by the two five-membered rings.
Notizen: Die Struktur des K3PS4·H2O/ Crystal Structure of K3PS4·H2O
Authors: Volk Klaus , Schäfer Herbert 
Published: February 2015

Abstract
K3PS4 · H2O crystallizes in the orthorhombic system, space group P21212 with a = 1205 ± 1 pm, b = 1251 ± 1 pm, c = 667.8 ± 5 pm. There are isolated PS4
3- -tetrahedra in the structure with P-S-bond lengths between 202.9 and 206.1 pm.
Übergangsmetallphosphidokomplexe, III [1] Neuartige Nickel-Phosphor-Drei-und Vierringkomplexe / Transition Metal Phosphido Complexes, III [1] Novel Nickel Phosphorus Three-, and Four-Membered Ring Complexes
Authors: Schäfer Hans 
Published: February 2015

Abstract
(R3P)2NiCl2 and LiP(SiMe3)2 react in a complex reaction sequence finally yielding (R3P)2Ni(PSiMe3)2 (5), containing a three-membered PNiP ring system, and [R3PNiP(SiMe3)2]2 (6), containing a (PNi)2 four-membered ring system with a nickel-nickel bond, respectively. NMR data are reported.
Hydrido -carbonyl -, Deuterido -carbonyl - und Carbamoyl-carbonyl-cobalt(I)-Komplexe des Tetrakis(diphenylphosphinomethyl)metlians [1] / Hydrido-carbonyl, Deuterido-carbonyl and Carbamoyl-carbonyl-cobalt(I) Complexes of Tetrakis(diphenylphosphinomethyl)methane [1]
Authors: Bauernschmitt Dieter , Behrens Helmut , Ellermann Jochen 
Published: February 2015

Abstract
[CO(CO)2(R2PCH2)3CCH2PR2][CO(CO)4] (R = C6H5) was synthesized in a simple manner from Co2(CO)8 and the tetratertiary phosphine C[CH2P(C6H5)2]4, which acts only as a tridentate ligand. [Co(CO)2(R2PCH2)3CCH2PR2][Co(CO)4] reacts with NH4PF6, NaBH4, NaBD4 or liquid ammonia at 20 °C to [Co(CO)2(R2PCH2)3CCH2PR2]PF6, CoH(CO)2(R2PCH2)2C(CH2PR2 · BH3)2, CoD(CO)2(R2PCH2)2C(CH2PR2 · BD3)2 or Co(CO)(CONH2)(R2PCH2)3CCH2PR2. In liquid ammonia [Co(CO)2(R2PCH2)3CCH2PR2][Co(CO)4] at 60 °C yields the hydride CoH(CO)(R2PCH2)3CCH2PR2. The new compounds were characterized, as much as possible, by their IR, Raman and 1H NMR data.
Diazen und andere Distickstoffhydride: Bildungswärmen, Dissoziationsenergien, Auftrittspotentiale, Protonenaffinitäten [1] / Diazene and other Dinitrogen Hydrides: Heats of Formation, Dissoziation Energies, Appearance Potentials, Proton Affinities [1]
Authors: Wiberg Nils , Fischer Gerd , Bachhuber Heinz 
Published: February 2015

Abstract
Ionisation and appearance potentials were obtained for diazene HN = NH (prepared by thermolysis of TOSN2H2M, M = Li, Na, K), isodiazene H2N = N (prepared by thermolysis of TOSN2H2CS and N2H4 microwave radiolysis, respectively), and other hydrides N2Hn (cf. Table I). The following energy data (kcal/mole) have been determined for diazene: heat of formation (32), enthalpy of isomerisation to isodiazene (13), NN-dissoziation energy (122), NH-dissoziation energy (81), hydrogen atom affinity (45), proton affinity (176).
Optisch aktive Übergangsmetall-Komplexe, LXIII [1] Asymmetrische Induktion in C5H5Mo(CO)2LX-Diastereomeren-Gleichgewichten / Optically Active Transition Metal Complexes, LXIII [1] Asymmetrie Induction in C5H5Mo(CO)2LX Diastereoisomer Equilibria
Authors: Brunner Henri , Bauer Isabella , Lukas Rainer 
Published: February 2015

Abstract
The thioamidato complexes C5H5(CO)2MoSC(R)NCH(CH3) (Ar), derived from acetic acid R = CH3 and benzoic acid R = C6H5, were prepared and characterized. The diastereo-isomers, differing in their 1H NMR spectra, were partly separated by fractional crystallization. After equilibration with respect to the labile Mo configuration the diastereoisomer ratio, a measure for the asymmetric induction from the chiral ligand on the formation of the two Mo configurations at equilibrium, was determined by 1H NMR integration. The asymmetric induction is very high for Ar = o-tolyl [76% (R = C6H3) and 84% (R = C6H5)] compared to Ar = phenyl [48% (R = CH3) and 56% (R = C6H5)] and Ar = m-and p-tolyl [52 and 44% (R = CH3)]. The (CO)3Cr complexed phenyl substituent with only 10% asymmetric induction does not show the β-phenyl effect, a weak attraction between aryl groups in β-position to the metal atom and the MC5H5 moiety.
An Unusual N-Dealkylation-Neighbouring Group Participations of Oximino Function [1]
Authors: Dubey S. K. , Sharma Satyavan , Iyer R. N. 
Published: February 2015

Abstract
Reaction of N,N-dialkyl-β-aminoketones (5 and 7) with hydroxylamine hydrochloride in pyridine results in the dealkylated oximine (6). The mechanism of this N-dealkylation may be explained as due to the neighbouring group participation of the oximine formed during the reaction.
Fluorhaltige Nitrile als Komplexliganden / Fluorine Containing Nitriles as Complex Ligands
Authors: Froböse Rolf , Mews Rüdiger , Glemser Oskar 
Published: February 2015

N-Cyano-sulfurdifluoride-imide NC-NSF2 and N-cyano-sulfuroxide-difluoride-imide NC-NSOF2 will react with AsFs to give the N-bonded nitrile adducts F5As · NC-NSF2 (F5As · NC-NSOF2). With [M(CO)5SO2]+AsF6- (M=Mn,Re) the expected complexes [(CO)5MNC-NSF2]+AsF6-
[(CO)5MNC-NSF2]+AsF6-are formed in quantitative yield.
Direct Evidence for the Polymeric Structure of Some Platinum-blue Complexes in Aqueous Solution
Authors: Zaplatynski Peter , Neubacher Harald , Lohmann Wolfgang 
Published: February 2015

Abstract
The anticancer active compound, cis-dichloro-diammine platinum (II), and the biomolecules cytosine and thymine form paramagnetic complexes in aqueous solution. The electron spin resonance spectra which can be attributed to paramagnetic platinum, exhibit large anisotropy in frozen solution as well as in liquid solution. This fact can be explained by assuming poly-meric structures also in liquid solution.
Solvatisierte HalogenochaLkogen(IV)säuren, I Darstellung und Struktur des Hexabromoselen(IV)säure-Hydrats (H5O2)2SeBr6 · 4H2O / Solvated Halogeno-Chalcogen(IV) Acids, I Preparation and Structure of the Hexabromoselenium(IV) Acid Hydrate (H5O2)2SeBr6 · 4H2O
Authors: Krebs Bernt , Hein Michael 
Published: February 2015

Hexabromoselenium(IV) acid with the stoichiometric composition H2SeBr6 · 8 H2O is prepared from solutions of SeBr4 in concentrated aqueous HBr. If separated from the solution, the crystalline compound is stable only at low temperatures.
A single crystal X-ray structure analysis at -100 °C (monoclinic, C2/m, a = 1039.4(5), b = 1028.8(4), c = 836.6(3) pm, β = 104.11(4)°) shows the acid to contain, besides regular octahedral SeBr6
2- ions (Se-Br: 255.3(2)-257.9(2) pm), H5O2
+ hydronium ions (O···O: 255(2) pm). The remaining H2O molecules are involved in a hydrogen bond system with O···O: 264(2)-275(2) pm and O···Br: 342(1), 351(1) pm. The formula has to be written as (H5O2)2SeBr6 · 4 H2O.
1.3-Dioxolohetarene, 3 [1]. Darstellung und Reaktionen von Pyrido[2.3-d]- und Pyrido[3.4-d] [1.3]dioxolen / 1,3-Dioxolohetarenes, 3 [1]. Preparation and Reactions of Pyrido[2,3-d]-and Pyrido[3,4-d][1,3]dioxoles
Authors: Daliacker Franz , Fechter Peter , Mues Volker 
Published: February 2015

The methylester of 3,4-dihydroxy-pyridine-6-carboxylic acid (1) reacts with bromochloromethane/potassjumcarbonate leading to the methylester of pyrido[3,4-d][1,3]-dioxole-6-onrhoxylic apid (2a). 2,3-Dihydroxy-pyridine (3a), 6-methyl- (3b), 5-chloro- (3c), and 5-bromo-2,3-dihydroxy-pyridine (3d) lead under the same conditions to the pyrido-[2,3-d][1,3]dioxole derivatives 4a, 4b, 4c, and 4d. The ester of 2,3-dihydroxy-pyridine-5-carboxylic acid (3e) and 4,6-dibromo-2,3-dihydroxy-pyridine (3f) also can be subjected to methylenation yielding the pyrido[2,3-d][1,3]dioxole compounds 4e and 4f.
Treatment of 6-bromo-pyrido[2,3-d][1,3]dioxole (4d) with n-butyllithium gives 6- lithium-pyrido[2,3-d][1,3]dioxole (5a) allowing reaction with carbondioxide, N,N-di- methylformamide, N,N-dimethylacetamide, and sulphur/iodine to obtain the carboxylic acid 5b, the aldehyde of, the ketone 5g, and the disulfide 5n.
The structures of compound 5b, 5f, and 5g were proofed by synthesis of derivatives.
Oxotitanate mit gemischter Valenz, II Zur Kenntnis von Sr2Ti6O13 / Oxotitanates with Mixed Valence, II About Sr2Ti6O13
Authors: Schmachtel J. , Müller-Buschbaum Hk. 
Published: February 2015

Abstract
Single crystals of Sr2Ti6O13 were prepared by heating a mixture of SrO·Ti2O3·2TiO2 in a vacuum furnace to 1800 °C for 6 hours. X-ray investigations show monoclinic symmetry (a = 1525,0, b = 376,9, c = 916,4 pm; β = 99,15°, space group C3
2h-C2/m). Sr2Ti6O13 is isotypic with Ba2Ti6O13.
Darstellung und Kristallstruktur von Barium-Quecksilber-Thiostannat(IV), BaHgSnS4 / Preparation and Crystal Structure of Barium-Mercury-Thiostannate(IV), BaHgSnS4
Authors: Teske Chr. L. 
Published: February 2015

Abstract
BaHgSnS4 was prepared for the first time and the crystal structure determined by using single crystal X-ray methods, a = 1080,4, b = 1084,o, c = 661,3 pm. Space group: C10
2V-Pnn2 (No. 34) orthorhombic. There are pairs of edge-sharing tetrahedra linked together to form two-dimensional net works. The crystal structure is similar to that of BaCdSnS4 [1].
Lithium-tetrahydroaluminat in Ether: eine NMR-Untersuchung / Lithiumtetrahydroaluminate in Ether: an NMR Study
Authors: Nöth Heinrich 
Published: February 2015

Abstract
Ether solutions of LiAlH4 have been investigated by 27Al and 7Li magnetic resonance in the concentration range 3.75-0.0075 M. The Al-signal shows a fine structure due to Al-H coupling only at concentrations below 0.15 M. The observed chemical shift 27Al is only slightly concentration dependent. The line width of the 27Al signal, which is inversely proportional to T2*, reaches a minimum value at a concentration where the best resolution of the 27Al quintet is observed. This, however, is not matched by the 7Li line width whose minimum value was found at a somewhat higher concentration. The results are consistent with multiple ion formation at the higher concentrations and with an ion pair at low concentrations.
Oligophosphin-Liganden, I. Einfache Synthesen der trimethylenverknüpften Triphosphine RP[(CH2)3PPh2]2 und ihrer Vorstufen Ph2P(CH2)3P(H)R (R = Ph, Me) / Oligophosphine Ligands, I Convenient Syntheses of the Trimethylene-linked TriphosphinesRP[(CH2)3PPh2]2 and their Precursors Ph2P(CH2)3P(H)R (R = Ph, Me)
Authors: Arpac Ertugrul , Dahlenburg Lutz 
Published: February 2015

Abstract
The secondary-tertiary diphosphines Ph2P(CH2)3P(H)Ph (2) and Ph2P(CH2)3P(H)Me (3) have been prepared from Ph2P(CH2)3Cl (1) and NaP(H)Ph or LiP(H)Me, respectively. Metallation of 2 and 3 with n-butyl lithium and further reaction of the lithio-derivatives with one equivalent of 1 yields PhP[(CH2)3PPh2]2 (4) and MeP[(CH2)3PPh2]2 (5). The tritertiary phosphines 4 and 5 have likewise been obtained from RPLi2 (R = Ph, Me) and two equivalents of 1. The synthesis of 4 from PhPCl2 and two equivalents of the Grignard reagent of 1 is also reported. Each of the phosphines 1-5 was characterized by NMR and mass spectroscopy.
27-p-Cumaroxy-ursolsäure, ein neuer Inhaltsstoff von Ilex aquifolium L. [1] / 27-p-Cumaroxy Ursolic Acid -a New Constituent of Ilex aquifolium L. [1]
Authors: Budzikiewicz H. , Thomas H. 
Published: February 2015

Abstract
The structure elucidation of 27-p-cumaroxy ursolic acid is described.
NOTIZEN. Weitere Verbindungen vom Typ A3NO3: K3NO3 und Rb3NO3 / Further Compounds Typ A3NO3: K3NO3 and Rb3NO3
Authors: Jansen Martin 
Published: February 2015

Abstract
K3NO3 and RbsNO3 were prepared by solid state reaction of equimolar mixtures of K2O/KNO2 and Rb20/RbN02, respectively. According to X-ray powder photographs their crystal structures are derived from the perovs-kite structure. K3NO3 is isostructural with Na3NO3 (a = 521.7 pm, Z = 1), Rb3NO3 represents a tetragonally distorted variant with a = 770.5, c = 550.8 pm and Z = 2.