bluuebunny/crossref_metadata_2025_split huggingface dataset:
Vier-und fünfgliedrige Phosphorheterocyclen, L [1] Tautomeric und Substitution am 5 -Dimethylamino -1.2.4.3λ3-triazaphosphol [2] / Four- and Fivemembered Phosphorus Heterocycles, L [1] Tautomerism and Substitution at 5-Dimethylamino-l,2,4,3λ3 -triazaphosphole [2]
Authors: Schmidpeter Alfred , Tautz Helmut 
Published: February 2015

Abstract
1,2,4,3 λ3 -Triazaphospholes unsubstituted at the heteroatoms can be synthesized only if they carry an amino group in 5-position. The title compound, being the first representative, was prepared from N,N-dimethyl-N′-aminoguanidinium iodide and P(NMe2)3. Its single proton is not bonded to phosphorus but to nitrogen and causes association by NH···N bridges. The proton was substituted for silyl, stannyl, phosphino and thiophosphinyl groups assumedly in 2-position. The phosphino derivatives react with sulfur only at the exocyclic phosphorus. Loss of N2 from the triazaphosphole ring was observed in one case.
Crystal and Molecular Structure of the Linear Chain Bis(1,2-diaminopropane)platinum(II,IV)tribromide
Authors: Endres H. , Keller H. J. , Martin R. , Nötzel S. 
Published: February 2015

Abstract
[Pt(dapn)2]Br3 (dapn = 1,2-diaminopropane), ortho-rhombic, Immm (D25
2h), a = 5.338(1), b = 6.900(5), c= 19.738(4) Å, Z = 2, V= 727 Å3 , dc = 2.7 g · cm-3 . The structure was refined to R = 0.094 for 576 reflections and can be described as a Wolffram's salt analogue. A rotating crystal photograph shows weak diffuse layers between the Bragg reflections as evidence for one-dimensional order along the M-X-M chain, but for successful refinement the M-X distance (2.673(1) Å) have to be assumed to be equal.
cis-trans-Configuration of α-Azidochalkones
Authors: Knittel Dierk , Weber Gabriela 
Published: February 2015

Abstract
The two stereoisomeric α-azidochalkones (1,3-diaryl-2-azidopropenones) are selectively obtain-able, depending on the temperature, by condensation of aldehydes with a-azidocarbonyl compounds. For the higher melting point compound the trans configuration is proved by single crystal X-ray analysis of its triphenyl-phosphazeno derivative.
Analogous isomers may now be characterised from their 1H NMR parameters.
Short Time Pyrolysis, Part 11 [1-3]A Simple Synthesis of Dibenzopyracylene
Authors: Schaden Gerhard 
Published: February 2015

Abstract
Dibenzo[b,def]chrysene-7,14-dione (1) and benzo[rst]pentaphene-5,8-dione (2) on vacuum flow pyrolysis successively eliminate two CO's forming 13H-naphtho[3,2,1-cd]fluoranthene-13-one (3) and finally indeno[1,2,3-cd]fluoranthene (dibenzopyracylene) (4).
Struktur und Eigenschaften des Kaliumhydrogendiarsenit-Hemihydrats, KHAs2O4 · 1/2 H2O / Structure and Properties of the Potassiumhydrogendiarsenite-hemihydrate, KHAs2O4 · 1/2 H2O
Authors: Fuchs Joachim , Guevara Hernan 
Published: February 2015

Abstract
KHAs2O4 · 1/2 H2O crystallizes in the tetragonal space group I 4/m with the lattice constants a = 14,480 Å, c = 5,250 Å. The anion forms infinite chains, [HAs2O4]n
n- , in the direction of the c axis. Arsenic is surrounded by three oxygens in trigonal pyramidal co-ordinations.
Ultracentrifuge work shows that the solution contains monomeric species, probably [ASO(OH)2]-. Raman spectra gave no evidence for the existence of As-H-bonds either in the solid or in solution.
Ringkontraktion am Cyclotrisilazan -System - Synthese und Molekülstrukturen zweifach silylverknüpfter Cyclodisilazane / Ring Contraction in the Cyclotrisilazane System - Synthesis and Molecular Structures of Silyl-Bridged Cyclodisilazanes
Authors: Clegg William , Hesse Michael , Klingebiel Uwe , Sheldrick George M. , Skoda Lutz 
Published: February 2015

Abstract
l-(Fluorodiorganylsilyl)-2,2,4,4,6,6-hexamethyl-3-(trimethylsilyl)cyclotrisilazanes react with butyllithium to give the corresponding lithium salts. Ring contraction of the lithium salts with formation of lithiated (fluorodiorganylsilyl)amino-substituted four-membered rings is observed in THF solution. The dimerisation of these cyclodisilazanes with elimination of LiF is demonstrated by crystal structure determinations of three products. Monoclinic and triclinic crystalline modifications of one compound could be isolated.
Darstellung, Eigenschaften und Kristallstruktur von 6-Methyl-4-Methylen-2-Phenyl-4 H-1.3.2-dioxaphosphorin / Preparation, Properties and Crystal Data of 6-Methyl-4-methylen-2-phenyl-4 H-1,3,2-dioxaphosphorin
Authors: Seyerl J. v. , Huttner G. 
Published: February 2015

Abstract
PPh(C6H5O2) was prepared for the first time in the free state. The compound crystallizes in the monoclinic spacegroup P21/c; a= 1084, b= 1079, c= 989 pm; β= 113.7°.
X-ray Structural Analyses of Two Allotropes of Cycloheptasulfur ( γ and δ-S7 ) [1]
Authors: Steudel Ralf , Steidel Jürgen , Pickardt Joachim , Schuster Fritz , Reinhardt Richard 
Published: February 2015

Abstract
X-ray structural analyses of two monoclinic allotropes of cycloheptasulfur carried out at -110 °C revealed almost identical chair-like molecular structures of approximate Cs symmetry with bond distances between 199.5 and 218.2 pm, bond angles between 101.5 and 107.5°, and torsional angles between 0 and 109°.
O.O-Diphenyl-N-chloramidophosphat / 0,0-Diphenyl-N-chlorophosphoramidate
Authors: Drewelies Kurt , Münch Volker , Jander Jochen , Latscha Hans Peter 
Published: February 2015

Abstract
(C6H5O)2P(O)NHCl can be synthesized in 83-88% yield by direct hydrolysis of (C6H5O)2P(O)NCl2 in petroleumether solution. This first example of a new class of N-halogeno compounds, a colourless crystalline substance was characterized by 31P and 1H NMR, IR and mass spectroscopy as well as by elemental analysis.
Arsenverbrückte zweikernige Mn(CO)4Br-Komplexe / Arsenic Bridged Dinuclear Mn(CO)4Br Complexes
Authors: Börner Michael , Müller Rainer , Vahrenkamp Heimich 
Published: February 2015

Abstract
In Mn(CO)5Br one or two CO groups could be replaced by Me2AsCl. From Me2AsCl-Mn(CO)4Br with carbonyl metalates, or from Mn(CO)5Br with organometal dimethylarsenides, the arsenic bridged dinuclear complexes LnM-AsMe2-Mn(CO)4Br with LnM = CrCp(CO)3, MoCp(CO)3, WCp(CO)3, and Mn(CO)5 were obtained. Upon attempts to convert these to metal-metal bonded compounds the Cr-As-Mn complex decomposed whereas the Mn-As-Mn complex was spontaneously converted to (CO)4Mn[μ-AsMe2, μ-Br]Mn(CO)4.
Synthese von cis-und trans-4-Cyanocyclohexanol / Synthesis of cis-and trans-4-Cyanocyclohexanol
Authors: Praefcke Klaus , Schmidt Dietmar 
Published: February 2015

Abstract
The synthesis of cis-and trans-4-cyanocyclohexanol 2 a and 2 b is described for the first time. Their stereochemistry has been determined by 1H NMR spectroscopy.
A Comparison of the Effects of Steric Crowding at Phosphorus on the Steric Course of Wittig Reactions of Stabilised and Semistabilised Ylides
Authors: Allen David W. 
Published: February 2015

Abstract
The cis-trans ratio of the alkenes formed in Wittig reactions of semistabilised ylides (derived from benzyltriarylphosphonium salts in ethanolic sodium ethoxide) with benz-aldehyde, acetaldehyde or trimethylacetaldehyde increases as steric crowding at phos-phorus increases. In contrast, the cis-trans ratio of the unsaturated esters formed in the related reactions of the stabilised ethoxycarbonylmethylene ylides decreases as steric crowding at phosphorus increases. The relevance of these results to recent proposals for the mechanism of the Wittig reaction is considered.
NOTIZEN. The Conformations of Oxacyclooctanes
Authors: Burkert Ulrich 
Published: February 2015

Abstract
The geometries and energies of the conformers of oxocane, the isomeric di-and trioxocanes, and of 1,3,5,7-tetroxocane were calculated by molecular mechanics. A boat-chair conformation was preferred by all molecules. From the preference of oxygen in the boat-chair conformations of oxocane (position 3 over 1 over 4) the preferred boat-chair form of all other oxocanes can be derived. The results are compared to experi-mental data, which in part can be reinterpreted. Additional CNDO/2 and MINDO/3 calculations were performed for 1,3,5,7-tetroxocane.
Polarographic Behaviour of Some Steroidal Olefins
Authors: Wilk Manfred , Schmitt Karlheinz 
Published: February 2015

Abstract
Halve-wave-potentials of five steroidal olefins were measured by anodic polarography. They show oxidation-potentials in the range of 0.7-0.9 V. Differences in potentials are correlated to shape of the molecules.
Derivatives of cis-NPCl2(NSOCl)2 and (NPCl2)2NSOCl, Part XV [1]. Methyl-and Ethylamino Derivatives of (NPCl2)2NSOPh
Authors: Cnossen-Voswijk C. , Grampel J. C. van de , Kruk C. 
Published: February 2015

Abstract
The aminolysis of (NPCl2)2NSOPh by methyl-and ethylamine in diethylether proceeds mainly via a non-geminal substitution pattern. In acetonitrile both geminal and non-geminal substitution is observed. The preparation of the derivatives is described and the 1H and 31P NMR data are discussed. The interpretation of the NMR spectra is supported by the simulation of the spectra of NPClNHMeNPCl2NSOPh.
The Crystal Structures of BaSe2 and BaSe3
Authors: Hulliger F. , Siegrist T. 
Published: February 2015

Abstract
BaSe2 crystallizes with a monoclinic cell, a = 9.820(5), 6 = 4.929(3), c = 9.335(5) Å, β= 118.48(5)°; Z = 4, space group C 2/c. BaSe3 is tetragonal, a = 7.2802(5), c = 4.2495(4) Å; Z = 2, space group P4̄21m. Both polyselenides are isotypic with the corresponding poly sulfides.
IR, 31P-, 55 Mn-und 185,187 Re-NMR spektroskopische Untersuchungen an einigen Carbonylmangan-und -rhenium-Komplexen/IR, 31P, 55Mn and 185,187Re NMR Spectroscopic Investigations of Some Carbonylmanganese and -rhenium Complexes
Authors: Keçeci Ahmet , Rehder Dieter 
Published: February 2015

Abstract
The IR and NMR spectra of the complexes [M(CO)6]Cl · HCl (M = Mn: 1, M = Re: 2), M(C0)5C02Et (M = Mn: 3, M = Re: 4), [Mn(CO)5PR3][PF6] (5; PR3 = PPh(OPh)2: a, P(n-Pr)3: b, PHPh2: c, PPh(NEt2)2: d, P(p-C6H4F)3: e), [Re(CO)5PHPh2][PF6] (6 c), Mn2(CO)8(PR3)2 (7) and Re2(CO)8(PHPh2)2 (8c) are discussed in the context of σ-and π-interactions in the metal-ligand system and compared with 51V NMR data of the analogous isoelectronic and isostructural carbonylvanadates (-I). On the basis of these results, the phosphines are arranged in the order of decreasing integral ligand strength according to a>b>c>d. The 55Mn shielding of 5 is greater than that of 1, which is explained by strong σ-interactions and correspondingly large e-a1* splitting dominating the paramagnetic deshielding term in the pseudooctahedral complexes of type 5. The only rhenium compound accessible to NMR is 2, for which the 185 Re and 187 Re resonances were obtained. 31P coordination shifts are positive for all complexes. Spectroscopic data for 7c show that this complex presumably has the structure (CO)5Mn-Mn(CO)3(PHPh2)2, contrasting 7a, 7b, 7d and 7e (local D4d symmetry).
Zur Reaktion zwischen Bortrifluorid und Natrium-diethylphosphit Darstellung und Reaktionen von Tris(diethylphosphitoboran) The Reaction between Borontrifluoride and Sodium Diethylphosphite Synthesis and Reactions of Tris(diethylphosphitoborane)
Authors: Binder Herbert , Palmtag Jürgen 
Published: February 2015

Abstract
Tris(diethylphosphitoborane) (2) can be synthesized by the reaction of BF3·O(C2H5)2 with sodium diethylphosphite. The chemical behaviour of this new compound and its NMR data are reported.
Darstellung und spektroskopische Charakterisierung von Tetrakis (chloro -iodo ) oxalato -osmaten (IV )/Preparation and Spectroscopical Characterisation of Tetrakis(chloro-iodo)oxalato-osmates(IV)
Authors: Preetz W. , Schulz H. 
Published: February 2015

Abstract
On treatment of [OsI4ox]2- with Cl- the mixed complexes [OsClnI4-nox]2-, n = 1, 2, 3, are formed. The isolation and complete separation of the differently coloured geometric isomers is achieved by ion exchange chromatography on diethylaminoethyl cellulose. The IR and Ra spectra are assigned according to point groups C2v, Cs, C1. The mutual influence of ligands, especially by the high trans effect of I, is indicated by shifts of the distinct vibrational and electronic bands. The observed splittings of I→Os transitions are attributed to the different groupings I-Os-I, I-Os-Cl, and I-Os-O, important for the distinction of stereoisomers. The CT-bands as well as the d-d-transitions show batho-chromic shifts with increasing number of I-ligands. Up to five spin-orbit components in the NIR region are well resolved. The assignment is improved by the electronic Ra spectra. The fine structure of some d-d-bands originates from coupling with symmetric vibrational modes.
Kristall-und Molekülstruktur des (Tetramethylcyclobutadien)cis-1.2-dicyano-ethen-1.2-dithiolato-nickel(II) /Crystal and Molecular Structure of (Tetramethylcyclobutadiene)cis-1,2-dicyano-ethene-1,2-dithiolato-nickel(II)
Authors: Hemmer Reinhard , Brune Hans Albert , Thewalt Ulf 
Published: February 2015

Abstract
Single crystals of the title compound, A, have been prepared and studied structurally by X-ray analysis. A crystallizes in the space group P21/n with Z = 4 and lattice parameters a = 11.174(3), b= 15.627(5), c= 8.148(3) Å and β = 92.82(3)°. Within the limits of error the π-bonded cyclobutadiene ring is a square with an average C-C-bond distance of 1.465 Å ; the methyl groups are displaced away from the nickel atom, the average distance between the ring plane and the methyl C-atoms being 0.15 Å. The sulfur containing five membered ring has a cyclic delocalized electron distribution.
Metall-π-Komplexe yon Benzolderivaten, XIII Bis(methylthio-η-beiizol)chrom(0) Darstellung und Einsatz als zweizähniger Chelatligand/ Metal-π Complexes of Benzene Derivatives, XIII Bis(methylthio-η-benzene)chromium(0) Preparation and Function as a Bidentate Chelating Ligand
Authors: Burdorf Helmut , Eischenbroich Christoph 
Published: February 2015

Abstract
The thioanisole-π-complexes (methylthio-η-benzene)-(η-benzene)-chromium (2) and bis(methylthio-η-benzene)chromium (3) have been prepared via lithiation of bis(η-benzene)-chromium and consecutive reaction with dimethyldisulfide. 1H NMR and 13C NMR spectra of 2 and 3 as well as ESR-spectra of the corresponding radical cations 2.+ and 3.+ were recorded and analyzed. In contrast to C(η-arene)-Si and C(η-arene)-P bonds, C(y-arene)-S bonds are stable to solvolysis.
With (norbornadiene)tetracarbonylmolybdenum, 3 readily forms [bis(methylthio-η-benzene)chromium]tetracarbonylmolybdenum (6) wherein 3 functions as a chelating ligand. 1H and 13C NMR evidence suggests, that at room temperature 6 undergoes rapid conformational interconversions.
The Crystal and Molecular Structure of 2-{8-(2-Aminophenoxy)-3,6-dioxaoctyloxy}benzoic Acid · NaClO4, a Linear Polyether with Terminal Amino and Carboxyl Functions
Authors: Chacko K. K. , Saenger W. 
Published: February 2015

Abstract
The title compound, C19H23NO6 · NaClO4, crystallizes in the monoclinic space group P21/c with cell dimensions a = 16.374(5), b = 9.856(4), c = 27.245(8) Å, β = 91.88(5)° and Z = 8. The structure of this polyether complex was solved on the basis of 4501 diffractometer measured reflections and refined to an Rw of 0.091. There are two molecules per asymmetric unit which are related to each other by an approximate non-crystallographic centre of symmetry. Both complex molecules exist in the favourable zwitterion configuration with ion pair attraction between the amino (NH3
+) and carboxyl(COO -) end groups of the polyether ligand. The Na+ion is circulary coordinated to all except the oxygen atoms of the aminophenoxy end group of the polyether ligand suggesting that this oxygen has reduced electronegativity. All C-C and C-O bonds of the ligand exist in favourable gauche and trans conformations.
Synthesis of 6-N-Aryl and Heteroaryl Benzthiazoles as Potential Anthelmintics
Authors: Abuzar Syed , Sharma Satyavan 
Published: February 2015

Abstract
A number of 6-substituted arylaminobenzthiazoles (5-8 and 16-18), 6-(substituted -1-benzimidazolyl)benzthiazoles (9-15) and 6-(3-quinazolyl)benzthiazoles (19) have been synthesized starting from corresponding 6-aminobenzthiazoles. None of the compounds showed significant anthelmintic activity.
Darstellung und Charakterisierung von Tetrabutylammonium-Tetraiodooxotechnetat(V), (TBA) [TcOI4] / Preparation and Characterization of Tetrabutylammonium Tetraiodooxotechnetate(V), (TBA)[TcOI4]
Authors: Peters G. , Preetz W. 
Published: February 2015

Abstract
Pure (TBA)[TcOI4] is prepared from (TBA)[TcOCl4] by ligand exchange reaction with Nal in acetone. The vibrational spectra indicate C4v symmetry for the complex ion. On excitation with the 514.5 nm line of an Ar-laser a resonance Raman spectrum is obtained showing v(TcO) = 996 cm-1 and four of its overtones, symmetrically surrounded by groups of bands arising as well from the sums as from the differences of frequencies with the other fundamentals. In contrast to the ligand exchange reaction the reduction of Tc04- with conc. HI yields products always contaminated with polyiodides. The extremely strong Raman scatterer (TBA)l3 is detected by a characteristic doublet at 111 and 116 cm-1 and even small amounts of it cover the Raman spectrum of (TBA)[TcOI4].
Reaktion von Hiallium(III)-carboxylaten mit Ketonen / Reactions of Thallium(III) Carboxylates with Ketones
Authors: Vollmerhaus Mechthild , Huber Friedo 
Published: February 2015

Abstract
In the reaction of ketones RCOCH3 (R = CH3, C2H5, n-C3H7, i-C3H7, n-C4H9, i-C4H9, tert-C4H9) with thallium(III) acetate in methanol, thallation at CH3 or at a-C in R has been observed by NMR spectroscopy. J(203/205T1-1H) in RCOCH2X [X = Tl(OCOCH3)2] is nearly independent of R (ca. 1290 Hz), but in R′CHXCOCH3 (R′ = H, CH3, C2H5) it increases with increasing chain length. RCOCH2X and R′CHXCOCH3 decompose to give the corresponding acetoxylated ketones, e.g. CH3COCH2OCOCH3. Analogous thallation products have been observed in the reaction of acetone and C2H5COCH3 with thallium (III) iso-butyrate.
Isosilychristin, ein neues Flayonolignan aus Silybum marianum L. Gaertn. / Isosilychristin, a New Flavonolignan from Silybum marianum L.Gaertn.
Authors: Kaloga Macki 
Published: February 2015

Abstract
A new flavonolignan, isosilychristin (1), has been isolated from the fruits of Silybum marianum L. Gaertn. Its structure and configuration is elucidated by spectroscopic methods.
Eine neue Darstellungsmethode für Caesiumhydroxid / A New Preparative Method for Cesiumhydroxide
Authors: Jacobs Herbert , Harbrecht Bernd 
Published: February 2015

Abstract
Cesiumhydroxide has been prepared by the reaction of CsOH · H2O with CSNH2 in super-critical ammonia. Thermochemical data for CsOH are given in the range from 100 to 640 K. The x-ray investigation of the compound above 497.5 K shows a sodium chloride type of structure with a = 6,427 (5) Å at 503 K. The lattice constants for the rhombic modification at 298 K are a = 4,350 (3) Å, b = 11,99 (1) Å and c = 4,516 (3) Å. The cell contains four formula units. The structure is of an anti-NaOH type.
Hochdruckreaktionen, XIII [1] Synthese von(—)Cannabidiol unter hohen Drucken / High Pressure Reactions, XIII [1] Synthesis of (—) Cannabidiol at High Pressure
Authors: Kurth Heinz-Jörg , Bieniek Dieter , Körte Friedhelm 
Published: February 2015

Abstract
Cannabidiol 3 has been synthesized under high pressure conditions (7-8 kbar, 150 °C) from Olivetol 1 and trans-p-Menthadien-(2,8)-ol-(1) 2 with 41% yield. The influence of different solvents on the yield has been studied.
Darstellung und Kristallstruktur von Bis-(N-Methylhydroxylamido(1-)-O.N)(N-methyl-N-oxo-dithiocarbamato-O.S)- oxo-molybdän(VI) / Synthesis and Crystal Structure of Bis(N-methylhydroxylamido(1-)-O,N)- (N-methyl-N-oxo-dithiocarbamato-O,S)-oxo-molybdenum(VI)
Authors: Holzbach Wolfgang , Wieghardt Karl , Weiss Johannes 
Published: February 2015

Abstract
The reaction of [MoO2((CH3)HN-O)2] and N-methylhydroxylammoniumchloride in an aqueous suspension with CS2 yields red crystals of the analytical composition MOC4H14N3O4S2. The crystal structure has been determined by single crystal X-ray diffraction analysis. The compound crystallizes in the monoclinic space group P21/c, with cell constants a= 1333.2(3), b = 814.2(2), c = 2179.8(6) pm, β = 105.42(2)°, and Z = 8. The final R-value is 4.5% for 2965 unique reflexions. The structure consists of two crystallographically independent neutral complexes of molybdenum(VI). The geometry about the molybdenum is a distorted pentagonal bipyramid containing a terminal oxygen atom, two N-methylhydroxylamido(1-) ligands coordinated via the O-and N-atoms and an N-methyl-N-oxo-dithiocarbamato(2-) ligand forming a planar five membered ring with the molybdenum(VI) center (O,S-coordination).
S4N4 und seine Derivate: Molekül-und Kristallstruktur von S6N4
2+ (FeCl4
—)2 / S4N4 and its Derivatives: Molecular and Crystal Structure of SeN4
2+ (FeCl4
-)2
Authors: Thewalt Ulf , Burger Maria 
Published: February 2015

Abstract
The reaction of FeCl3 with S4N4 in CH2Cl2 at room temperature yields S6N4
2+(FeCl4
-)2 (A), among other products. Crystal data of A: Space group P21/c, Z = 4, α = 12.090(4), b= 11.745(3), c= 13.918(3) Å, β= 101.25(2)°. In its dimensions and its conformation the S6N4
2+ -cation in A agrees well with the S6N4
2+ -cation in other salts. There exists one close S···Cl contact between each of the S atoms of the central S4 ring in the cation and the neighbouring FeCl4
- anions (3.04 to 3.16 Å; for comparison: the S···Cl van der Waals distance is 3.50 Å).
Elektrochemische Synthesen, VI [1]. Elektrochemische Substitution der VIB-Hexacarbonyle M(CO)6 (M = Cr, Mo, W) / Electrochemical Syntheses, VI [1]. Electrochemical Substitution of VIB-Hexacarbonyls M(CO)6 (M = Cr, Mo, W)
Authors: Grobe Joseph , Zimmermann Heinz 
Published: February 2015

Abstract
The electrochemical substitution of group VIB hexacarbonyls by solvent molecules and/or phosphane ligands is studied in some detail and is found to be a fruitful alternative preparative route to the well-known photochemical reaction.
125Te-NMR-Verschiebungen und Te-P-Kopplungskonstanten von Phosphantelluriden, Tellurophosphanen und Tellurophosphankomplexen / 125Te NMR Shifts and Te-P Coupling Constants of Phosphane Tellurides, Tellurophosphanes, and Tellurophosphane Complexes
Authors: Mont Wolf-Walther du , Kroth Heinz-Jürgen 
Published: February 2015

Abstract

125Te NMR shifts and coupling constants 1J(125Te 31P) of various types of Te-P com-pounds have been measured. 125Te NMR singlets from R3P = Te/PR3 mixtures corroborate the rapid Te migration between tertiary phosphanes. Tellurophosphanes R-Te-PR′2 give well-resolved doublets (R = p·tolyl, trimethylsilyl) or triplets (R = PR'2) due to 1J(125Te 31P) coupling. Coordination of tellurophosphanes to metal carbonyls via the lone pair at phosphorus leads to downfield shifts of the 125Te NMR resonances.
Zum Thermolyseverhalten von 2.2-Dihydro-1.4.2-oxazaphosphol-4-enen, II [1]. Eine einfache Synthese für fluorsubstituierte N-Vinylimidoylchloride / Thermolysis of 2,2-Dihydro-1,4,2-oxazaphosphol-4-enes, II [1]. A Simple Synthesis for Fluorine Substituted N-Vinylimidoyl Chlorides
Authors: Burger Klaus , Goth Herbert , Burgis Eduard 
Published: February 2015

Abstract
3,3-Bis(chlorodifluoromethyl)-2,2,2-trimethoxy-2,2-dihydro-1,4,2-oxazaphosphol-4-enes (2) at room temperature, 3,3-bis(chlorodifluoromethyl)-2,2,2-triphenoxy-2,2-dihydro-1,4,2-oxazaphosphol-4-enes (3) at 140-145 °C undergo cycloelimination of trimethyl, and triphenyl phosphate, respectively, with formation of N-[1-chlorodifluoromethyl-2,2-di-fluoro(vinyl)]-imidoyl chlorides (4) in high yields.
Methoxymerkurierung-Demerkurierung von Pheromonen zur Bestimmung der Doppelbindungsposition / Methoxymercuration-Demercuration of Pheromones for Double Bond Position Determination
Authors: Vostrowsky Otto , Michaelis Karl 
Published: February 2015

Abstract
Methoxymercuration-demercuration, Pheromones Methoxymercuration-demercuration of alkenyl acetates and alkenols yields methoxyderivatives which were analysed by mass spectrometry to determine the original double bond position.