bluuebunny/crossref_metadata_2025_split huggingface dataset:
Activities of Antagonists of the Luteinizing Hormone Releasing Hormone with Emphasis on Positions 1, 5 and 6 and on Positions 1, 2 and 3
Authors: Folkers Karl , Bowers Cyril , Shao-bo Xiao , Tang Pui-Fun Louisa , Kubota Minoru , Stepinski Janusz , Kubiak Teresa 
Published: March 2015

Abstract
Analogs of the luteinizing hormone releasing hormone (LHRH) which are antagonists for controlling ovulation require potency and negligible release of histamine as a side effect. Forty analogs were designed, synthesized and bioassayed in two groups with emphasis upon positions 1, 5 and 6 and upon positions 1, 2 and 3. N-Ac-D-2-Nal1, D-pClPhe2, D-3-Pal3, Ser4, Tyr5, D-Lys6, Leu7, Arg8, Pro9, D-Ala10-NH2 and N-Ac-D-CL2Phe1, D-α-Me-pCIPhe2, D-3-Pal3, Ser4, Tyr5 D-Arg6, Leu7, Arg8, Pro9, D-Ala10-NH2 caused 100% inhibition of ovulation at 0.5 μg in rats. The former analog showed 12.5% anh-ovulatory activity (AOA) and the latter analog showed 40% AOA at 0.25 (μg. The neutral Cit6 moiety is unique since it and the basic D-NicLys6 moiety provided peptides comparable in activity. Frequently, D-2-Nal, D-pClPhe and D-CL2Phe are comparable in position 1. Histamine release was substantially low for a D-NicLys6 analog.
Nitriles in Heterocyclic Synthesis: The Reaction of 2-Thiocarbamoyl Cinnamonitriles with Active Methylene Reagents
Authors: El-Torgoman Abdel Moneim , El-Kousy Salah Mohamed , Kandeel Zaghloul El-Shahat 
Published: March 2015

Abstract
Substituted pyridin-2-thiones, 2-pyridones, thiopyrans and pyranoazoles could be synthesized via the reaction of 2-thiocarbamoyl cinnamonitriles with some active methylene reagents.
Darstellung und Kristallstruktur von NaCu3Te2/ Preparation and Crystal Structure of NaCu3Te2
Authors: Klepp Kurt O. 
Published: March 2015

Abstract
The title compound was prepared by reacting a corresponding mixture of Na2Te2 , copper and tellurium at 700 °C. NaCu3Te2 forms crystals of metallic lustre which are rapidly decomposed in humid atmosphere. It crystallizes with a rhombohedral structure, space group R3m, with a = 4.276(3) Å, c = 23.78(1) Å, Z = 3. The crystal structure was determined from diffractometer data and refined to a conventional R of 0.050 for 135 independent reflections.
The atomic arrangement of NaCu3Te2 is based on a c.c.p. array of tellurium atoms with stacking sequence c6 . Na and Cu occupy alternatingly the interstitial layers. Na is in an octahedral coordination (d̄Na-Te : 3.22 Å), the Cu atoms occupy the tetrahedral and the octahedral voids. They are, however, shifted from the centers of these sites, resulting in an 1 + 3 coordination (d̄Cu-Te : 2.70 Å) for Cu on the tetrahedral. and an essentially trigonal coordination (dCu-Te : 2.575 Å) for Cu on the octahedral sites.
NaCu3Te2 shows no closer structural relationships to the other alkali-copper-chalcogenides known so far. However, its crystal structure may be interpreted as an ordered defect derivative structure of the CaCu4P2 -type [1].
Über die Umsetzung von Kupfersulfat mit Carbonsäuren und Carbonsäurederivaten in wäßrigen Lösungen unter hydrothermalen Bedingungen/The Reaction of Copper Sulfate with Carboxylic Acids and their Derivatives in Aqueous Solutions under Hydrothermal Conditions
Authors: Seel F. , Schuh J. 
Published: March 2015

Abstract
Under hydrothermal conditions aqueous solutions of copper(II) sulfate (1) are reduced by means of saturated fatty acids with hydrogen at the α-atom to yield crystalline copper. In all cases carbon dioxide is liberated and lower fatty acids and ketones can be identified as reaction products. α-Hydroxy and α-aminocarboxylic acids proved to be very effective reducing agents towards 1. The yield of copper varied from 2 to 2.5 mol Cu per 1 mol of amino acid. The reaction of 1 is suppressed by sulfuric acid. The presence of hydrochlorid acid or chlorides leads to the precipitation of copper(I) chloride. The mechanisms of the decomposition of the various types of carboxylic acids is discussed.
It was also possible to precipitate metallic copper by means of various proteins.
Oligophosphaalkane, XVII Funktionalisierte Tri-, Tetra-und Pentaphosphaalkane mit der Donorsequenz P-C-C-P und P-C-C-C-P/Oligophosphaalkanes, XVII Functionalized Tri-, Tetra-and Pentaphosphaalkanes with the Donor Sequence P-C-C-P and P-C-C-C-P
Authors: Hietkamp Sibbele , Lebbe Thomas , Spiegel Gerd U. , Stelzer Othmar 
Published: March 2015

Abstract
Starting with the secondary phosphanes R2PH (R = Me, Ph, iPr) and the vinyl-or allylmethylphosphinic acid isopropylesters, the triphosphaalkanes R2P-[CH2]3 -PMe -[CH2]2 -PMeH containing one terminal PH-group have been synthesized in a multiple step synthesis. The tertiary-secondary phosphanes R2P-[CH2]3 -PMeH obtained as intermediates may be used for the syntheses of hybrid donor systems PPN. The P-C-skeletons of the tetra-and pentadentate oligophosphaalkanes have been built up by a free radical initiated addition of the vinyl or allyl compounds CH2=CH-P(NEt2)2 or CH2 =CH-CH2-P(O)(OiPr)Me to disecondary or disecondary-tertiary phosphanes, HMeP-[CH2]n-PMeH (n = 2, 3) or HMeP-[CH2]3 -PPh-[CH2]3 -PMeH, respectively. Methanolysis of the tetra-and pentaphosphaalkanes with terminal P-NEt2 functional groups affords the methoxy derivatives in almost quantitative yield. While the terminal P(NEt2)2 groups in the oligophosphaalkanes cannot be reduced by LiAlH4 , the corresponding methoxy derivatives react immediately to give the primary-tertiary phosphanes.
Atropisomerism in Boron-Nitrogen Heterocycles/Atropisomerism in Boron-Nitrogen Heterocycles
Authors: Köster Roland , Seidel Günther , Kerschl Susanna , Wrackmeyer Bernd 
Published: March 2015

Abstract
Atropisomerism owing to hindered rotation about the N-aryl bond is observed in 4,5-diethyl-2,2,3-trimethyl-1-(o-trifluormethyl)phenyl-2,5-dihydro-1H-1,2,5-azasila-(2) and -azastanna-boroles (5). The compounds 2 and 5 are characterized by elemental analysis, mass spectra and 1H, 11B, 13 C, 29Si and119Sn NMR. The ortho-trifluoromethyl group serves as an additional NMR spectroscopic probe because of “through space” 19F-1H and 19F-13C spin spin coupling. Compound 5 is the first derivative of a 2,5-dihydro-1H-1,2,5-azastannaborol.
Phosphordonor-substituierte Formylmangan-Komplexe /Phosphorous Donor Substituted Formyl Manganese Complexes
Authors: Weiler Gertrud , Huttner Gottfried , Zsolnai Laszlo , Berke Heinz 
Published: March 2015

Abstract
Phosphonomanganese complexes (CH3O)2(O)PMn(CO)3[P(OCH3)3]2 (1b), (CH3O)2(O)PMn(CO)2[P(OCH3)3]3 (1c) are obtained via demethylation of the corresponding cationic substituted carbonylmanganese compounds with KHB(secBu)3. The reaction of NaBH4 in methanol with cationic phosphorus donor substituted carbonyl manganese compounds leads to formyl complexes (OC)3L2MnCHO (L = P(OCH3)3 (3a), L = P(OEt)3 (3c), L = P(OiPr)3 (3d), L = PPh3 (3e)) and (OC)2[P(OCH3)3]3MnCHO (3b). 3d decomposes thermally to give an (OC)3[P(OiPr)3]2 MnH and an (OC)2[P(OiPr)3]3MnH complex. The latter has been characterized by an X-ray structure determination.
Die Kristallstruktur des "Indium-Dibromids" (InIInIIIBr4)/The Crystal Structure of "Indium Dibromide" (InIlnIIIBr4)
Authors: Beck H. P. 
Published: March 2015

Abstract
The crystal structure of InIlnIIIBr4 (Indium-Di-bromide) has been determined by single crystal methods. The compound crystallizes with a GaCl 2 -type arrangement in the orthorhombic space group Pnna with the lattice constants: a = 797.6(2) pm, b = 1036.6(2) pm, c =1038.8(2) pm.
Reaktionen von Acetylenkomplexen des Wolfram(IV) mit Tetrachloro-1,2-benzochinon/Reactions of Acetylene Complexes of Tungsten(IV) with Tetrachloro-1,2-benzoquinone
Authors: Stahl Karlheinz , Dehnicke Kurt 
Published: March 2015

Abstract
Acetylene complexes of tungsten(IV) of the type [WCl4(RC≡CR)]2 (R = halogene, phenyl) react with tetrachloro-1,2-benzoquinone to give monomeric tungsten(VI) chelate complexes WCl2(O2C6Cl4)2 and W(O2C6Cl4)3, respectively. The complexes have been characterized by their IR and mass spectra.
EPR and ENDOR of Sodium Complexes of Spin Labeled Monoazacrown Ethers
Authors: Sosnovsky George , Lukszo Jan , Gutierrez Peter L. , Scheffler Klaus 
Published: March 2015

Sodium complexes 3 and 5 of the spin labeled monoazacrown ethers 2,2,15,15-tetramethyl-1-aza- 4,7,10,13-tetraoxacyclopentadecane-1-oxyl (2) and 1,4,7,10-tetraoxa-13-(2′,2′,6′,6′-tetramethyl-piperidine-1′-oxyl-4′-yl)azacyclopentadecane (4) were synthesized and studied by EPR and ENDOR spectroscopies. The hyperfine splitting parameter and the g value of the complex 5, containing the exocyclic nitroxyl moiety, were identical to the parent complexon 4, i.e., aN = 15.6 G. g = 2.0060 ± 0.0001. In contrast, the data for the complex 3, containing the endocyclic nitroxyl moiety were different. Thus, the spectrum of the complex 3 was a triplet of quartets with aN = 15.7 G. aNa = 2.47 G, g = 2.0062 ± 0.0001, whereas the spectrum of the parent complexon 2 was a triplet with aN = 15.5 G, g = 2.0059 ± 0.0001.
The interaction between the sodium cation and the nitroxyl moiety in 3 was further confirmed by the sodium ENDOR transition at 7.27 MHz
Synthese und Kristallstruktur von [N(PPh3)2][VCl3(N3S2)]·C7H8 / Synthesis and Crystal Structure of [N(PPh3)2][VCl3(N3S2)]·C7H8
Authors: El-Kholi Aida , Christophersen Ruth , Müller Ulrich , Dehnicke Kurt 
Published: March 2015

Abstract
[N(PPh3)2][VCl3(N3S2)]·C7H8 is formed by the reaction of VCl2 (N3S2) with excess PPh3 in CH2C12 and subsequent treatment of the reaction mixture with toluene, as well as by the reaction of VCl2(N3S2) with [N(PPh3)2]Cl in CH2Cl2 in the presence of toluene. The compound forms red crystals, which have been characterized by IR spectroscopy. The crystal structure was determined by X-ray diffraction (1433 observed, independent reflexions, R = 0.070). Crystal data: mono-clinic, space group Cc, Z = 4, a = 994.1, b = 2148.0, c = 2055.2 pm, β = 90.03°. The compound consists of [N(PPh3)2]⊕ cations and [VCl3(N3S2)]⊖ anions, in which the vanadium atom is five-coordinated by threee chlorine atoms and two nitrogen atoms, and is part of a planar VN3S2 ring.
Preparation and Pyrolysis of Stereoisomeric Bromobicyclo[n.1.0]alkanes ( n = 6, 8 , 10)
Authors: Dehmlow Eckehard V. , Kramer Roland 
Published: March 2015

Abstract
The title compounds la-3c were prepared by stereoselective reduction of the respective dibromides. Pyrolysis gave allylic bromides (8, 9, 11) as primary and dienes (10, 12) as secondary products. Product ratios were independent of the stereochemistry of the starting materials. No differences of the rearrangement rates of the stereoisomers were observed in gas phase reactions of the derivatives of bicyclo[6.1.0]- and bicyclo[8.1.0]alkanes. With the larger bicyclo[10.1.0] derivatives, however, distinct differences in the thermal stability of cis-trans-isomers4c/5c or 2c/3c were found in condensed phase.
Ternäre Varianten des Pyrit-Typs: Darstellung und Struktur von SrPt4P6, SrPt4As6, BaPt4As6 und BaPt2P3 / Ternary Pyrite-Type Derivatives: Preparation and Crystal Structure of SrPt4P6, SrPt4As6, BaPt4As6 and BaPt2P3
Authors: Wenski Guido , Mewis Albrecht 
Published: March 2015

Abstract
The isotypic compounds SrPt4P6 , SrPt4As6 and BaPt4As6 were found to crystallize with a Pyrite-type derivative structure (monoclinic, C2/c, Z = 4) in which one Sr or Ba atom per formula unit occupies the position of a P2 or As2 pair. BaPt2P3 forms another Pyrite-type related structure (monoclinic, P21/c, Z = 4) built up by Ba2Pt and Pt3P6 layers. All crystal structures were refined from four-circle diffractometer data, the lattice constants are:
SrPt4P6: a = 825.2(1) pm, b = 798.4(1) pm, c = 1142.8(1) pm, β = 90.74(2)°;
SrPt4As6: a = 858.2(1) pm, b = 832.1(1) pm, c = 1194.5(1) pm, β = 91.00(2)°;
BaPt4As6: a = 868.8(1) pm, b = 833.3(1) pm, c = 1197.1(1) pm, β = 90.81(2)°;
BaPt2P3 a = 835.2(1) pm, b = 577.6(1) pm, c = 1157.4(1) pm, β = 106.73(2)°.
Synthese und Struktur von H2NSO2NWCl4 - ein Kirsanov-Reagens mit einem Übergangsmetallatom / Synthesis and Structure of H2NSO2NWCl4 - a Kirsanov Reagent with a Transition Metal Atom
Authors: Witt Michael , Roesky Herbert W. , Noltemeyer Mathias , Sheldrick George M. 
Published: March 2015

Abstract
H2N-SO2 -NWCl4 (1) has been synthesized from WCl6 and SO2(NH2)2 , and forms adducts with donor solvents such as pyridine and acetonitrile. 1·CH3CN crystallizes in the space group P21/n with cell constants a = 652.5(1); b = 2325.3(2); c = 775.8(1) pm; β = 90.32(1)°. The nitrogen-tungsten bond length of 173.0 pm and the S-N-W bond angle of 169.3° indicate a W=N double bond.
Hydroxy Complexes of Gold 2. Calcium Aurates [1]
Authors: Jones Peter G. , Schelbach Ralf , Schwarzmann Einhard 
Published: March 2015

Abstract
Two calcium aurate phases have been obtained as single crystals, phase 1 from H AUC1 4 + Ca(OH) 2 and phase 2 from NaAu(OH) 4 + Ca(C10 4) 2 . An X-ray structure determination of 1 shows its composition to be Ca 2 (0H) 3 (H 2 0) 4 [Au(0H) 4 ]. The apparent space group is Cmcm, but this corresponds to a sub-cell of the true structure. The disordered Cmcm structure was refined to R 0.032 for 813 reflections. The coordination geometry is square planar at gold (Au-O 1.97, 1.99 Ä), cubic at Ca(l) and octahedral at Ca(2). Phase 2 crystallizes in a primitive tetragonal cell with a 6.94, c 7.71 Ä; it is probably Ca[Au(OH) 4 ] 2 , but this has not yet been confirmed by a full structure determination.
Neuartige discotisch-flüssigkristalline, polare Monothioscyllitol-Derivate [1,2] / Novel Discotic Liquid Crystalline, Polar Monothioscyllitol Derivatives [1,2]
Authors: Kohne Bernd , Marquardt Peer , Praefcke Klaus , Psaras Panicos , Stephan Werner 
Published: March 2015

3-5
On the basis of an improved synthesis of the 1,3,4,5,6-pentaacetate of myo-inositol, now available in only one step from that cyclitol in yields up to 90%, we prepared various derivatives of 1-deoxy-1-mercapto-scyllo-inositol (monothioscyllitol) via the mesylate 1 a or the trifluoromesylate 1 b , respectively. The non-centrosymmtric disc-shaped thioethers 3a-h as well as their S,S-dioxides 4a-h and the S-oxide 5f exhibit thermotropic discotic mesophases over wide temperature ranges. The thermomesomorphism of these new sulfur compounds has been studied by optical microscopy and by differential scanning calorimetry. The pentabutyrates 3a and 4a as well as the dimesomorphic pentapentanoate 3 b exhibit a probably new type of discophase Dx whereas all other monothioscyllitol derivatives with longer alkyl chains show the Dho-phase over wide temperature ranges. Of some selected new thioethers 3, sulfones 4, and of the sulfoxide 5f the dipole moments have been measured which are highest with the cyano derivatives 3g and 4g at about 5 or above 6 D, respectively. These values characterize them as the strongest polar discogens studied so far.
The presented monothioscyllitol derivatives 3, 4 and 5 do not only increase the number of rarely known polar discogens, but also show that non-centrosymmetric and polar discotic liquid crystals with a small, alimonocyclic, saturated "core" now can be prepared easily. Their permanent electric dipole moments could give rise to interesting magnetic or electric field effects.
Synthese und Struktur von Phenyltetra(acetato)stiboran
Authors: Wieber Markus , Fetzer-Kremling Isa , Reith Hildegard , Burschka Christian 
Published: March 2015

Abstract
Phenyltetra(acetato)stiborane is obtained by reacting phenyldichlorostibane successively with sulfuryl chloride and silver acetate at low temperatures ( - 70 °C). An X-ray analysis of C6H5Sb[OC(O)CH3]4 shows, that the central antimony atom is hexacoordinated by chelation of one nearly symmetrically bonded acetate group, a phenyl group, and three singly-bonded acetate ligands.
Charge Transfer in MX3 • CH3CN (M = Al, Ga; X = Br, I) by Means of 14N, 27Al, 69Ga, 81Br, and 127I NQR
Authors: Okuda Tsutomu , Yamada Koji , Ishihara Hideta , Ichiba Sumio 
Published: March 2015

Abstract
NQR spectra were observed in the 1:1 complexes of CH3CN with AlBr3, AlI3, and GaBr3. The NQR data suggest that these complexes consist of the molecular species MX3 · CH3CN. The electron populations on the resonant nuclei and the charge transfer between N and metal atoms were estimated according to the Townes-Dailey treatment. The results show that the amount of the charge transfer in these complexes is large.
Metallorganische Reaktionen konjugierter Azomethine, IV [1] Katalytische Synthese substituierter Cyclohexane aus Butadien und 1-Azadienen an π-Allyl-Palladium-Komplexen
Authors: Dieck Heindirk tom , Müller Christiane , Haupt Erhard T.K. , Bolze-Kuhrt Dörte 
Published: March 2015

Abstract
The reaction of dimeric π-allyl palladium chloride with 1-azadienes 1 ( R -N = CH-CH = CH-R') affords the mononuclear complexes (π-Allyl)Pd(L)Cl 2. Two independent intramolecular rotational motions are detected by NMR methods. These complexes (with R ' = Aryl) react with silver tetrafluoroborate, preferentially in the presence of 1, to the cationic complexes [(π-Allyl)Pd(L)2]+ BF4
-, 3, which are also non-rigid with respect to ligand rotation on the NMR time scale. Complexes 3 catalyse the 2 :1-cyclo-cooligomerization of butadiene and 1-azadienes. This reaction to compounds 4 constitutes the first example of a very regio- and stereoselective formation of cyclohexanes from three C = C double bonds. The structure, substitution pattern and conformation of 4 are assigned on the basis of 2D -correlation NMR spectroscopy.
Phosphinsubstituierte Chelatliganden, XXV [1] Diastereoselektive Komplexierung chiraler Phosphinothioformamide mit entferntem Asymmetriezentrum
Authors: Kunze Udo , Burghardt Roland 
Published: March 2015

Abstract
For further studies of the diastereoselective complex formation of ambidentate chiral chelating ligands, we prepared the racemic phosphinothioformamides. Ph2P(X )C(S)NHC*HR 1R2, with X = 2e- (R1 = Ph,R2 = Et: 1a;R1 = Ph,R2 = iPr:2a; R2 = Me,R2 = Et:3a) and X = O (1b ,2b ) according to a previously reported route. The coordination of 1a -3a to CpM (CO)3Cl (M = Mo, W) in m ethanol gives the diastereomeric P.S-chelate complexes,

(Mo: 4-6, W: 7-9). In solution, epimerisation proceeds to an equilibrium ratio of B/A = 1,5 in case of 4, 5, 7, and 8, but less than 1,1 with 6 and 9. A reduced diastereoselectivity (d.e. 10 -20%) is also observed during the formation of the analogous molybdenum complexes 10a-d with phosphine ligands derived from α-amino acid esters. Ph2PC(S)NHC*H(R)COOMe [R = Me (L-Ala), CH2Ph (L-Phe). CHMe2 (L-Val). Ph (D-phenylglycine)]. The results indicate a significant asymmetric induction despite of the four bond distance of the chiral centres.
Photochemistry of Pesticides, 10 [1] Photodegradation of O,O-Diethyl-S(3,4-dihydro-4-oxobenzo[d][1,2,3]triazin- 3-yl-methyl)phosphorodithioate (Azinphos-ethyl)
Authors: Abdou W. M. , Sidky M. M. , Wamhoff H. 
Published: March 2015

Abstract
The photodegradation of Azinphos-ethyl (1) in chloroform and methanol solution has been studied. 3,4-Dihydro-3-methyl-4-oxobenzo[d][1,2,3]triazine (3), 3,4-dihydro-4-oxo-benzo[d]- [1,2,3]triazine (5), O,O-diethyl-O(3-methylbenzo[d][1,2,3]triazine-4-yl)p hosph ate (8), N-methylanthranilic acid (11) (in methanol: methyl ester 12), and sulfur have been isolated and characterized as photoproducts. The decay mechanism is discussed.
Zur Reaktion von (η5-C5H5)Fe(CO)2Br mit Se(SiMe3)2 Die Kristallstruktur von [Se{Fe(CO)2(C5H5)}3]2[Fe4Se4Br4]
Authors: Fenske Dieter , Maué Paul , Merzweiler Kurt 
Published: March 2015

Abstract
(η5-C5H5)Fe(CO)2Br reacts with Se(SiMe3)2 to form the title compound 1, which has been characterized by X-ray crystal structural analysis. 1 crystallizes in the space group P212121 with 4 formula units per unit cell. 1 consists of [Se{Fe(CO)2(C5H 5)}3]+- cations and [Fe4Se4Br4]2--anions, the latter with a heterocubane structure.
Synthese und Kristallstruktur des Phosphaniminatokomplexes [MoCl4(NPPh3)(Pyridin)] · CH2Cl2/ Synthesis and Crystal Structure of the Phosphaneiminato Complex [MoCl4(NPPh3)(pyridine)] · CH2Cl2
Authors: Völp Karin , Weller Frank , Dehnicke Kurt 
Published: March 2015

Abstract
[MoCl4(NPPh3)(pyridine)] · CH2Cl2 is formed by the reaction of the cyclothiazeno complex [MoCl3(N3S2) · (pyridine)] with triphenylphosphane in CH2Cl2 solution. It forms red, moisture sensitive needles. [MoCl4(NPPh3)(C5H5N)] · CH2Cl2 crystallizes monoclinically in the space group P21/n with four formula units per unit cell (1934 independent observed reflexions. R = 0.057). The cell dimensions are a = 1165, b = 1473, c = 1696 pm; β = 107.82°. The Mo atom is coordinated by four chlorine atoms, by the N atom of the (NPPh3
-) ligand, and in trans-position to it by the N atom of the pyridine molecule. The Mo= N = PPh3 group has a nearly linear MoNP axis (176.6°) with bond lengths of MoN = 172 pm and PN = 165 pm.
Phosphinocyclopentadienid via Cyclopentadienylphosphid/ Phosphinocyclopentadienide via Cyclopentadienylphosphide
Authors: Schmidpeter Alfred , Zirzow Karl-Heinz 
Published: March 2015

Abstract
Lithiumorganyls RLi (R = Me, Bu, Ph) add to (PhP)5 in successive degradation and disproportionation equilibria depending on the ratio of the reactants. At -70 °C (R = Me) disproportionation is blocked and (PhP)4R- and (PhP)3R- can be detected. With excess RLi m onophosphides PhPR- are formed.
CpNa with the help of a crown ether degrades (PhP)5 or substitutes cyanide from PhPCN- to give an equilibrium mixture of (PhP)nCp- anions, which stabilize by proton shifts: In case of n = 1 and 2 a shift from the Cp unit to the terminal phosphorus results in the formation of the phenylphosphino- and diphenyldiphosphino-cyclopentadienide anion, in case of n = 3 two proton shifts within the Cp unit result in a cyclopenteno-l,2,3-triphospholene allylic anion.
Lactamacetale als potentielle Enamin-Synthone in Heterocyclensynthesen, 4. Mitteilung Einstufen-Synthese des γ-Carbolingerüsts durch Diels-Alder-Reaktion von Indol-„Keten-N,O-acetalen“/ Lactam Acetals as Potential Enamine Synthons in Heterocyclic Synthesis, 4th Communication. One Step Synthesis of the γ-Carboline Frame via Diels-Alder Reaction of Indol-“Ketene-N.O-Acetals”
Authors: Möhrle Hans , Dwuletzki Heinz 
Published: March 2015

Abstract
2-Alkoxy-indoles 2a, b can be regarded as cyclic ketene-N.O -acetals. Their regiospecific [4+2]- Diels-Alder reaction with inverse electron demand with the triazine 3 yield in a one step addition the γ-carboline (4).
Phasendiagramme von Systemen, bestehend aus Aluminiumhalogeniden und Pyridinium-hydrohalogeniden, II. Das Phasendiagramm des Systems Aluminiumbromid–Pyridiniumbromid/ Phase Diagrams of Aluminium Halide –Pyridinium Halide Systems, II. Determination of the Phase Diagram Aluminiumbromide – Pyridiniumbromide
Authors: Seemann Gerd , Hensen Karl 
Published: March 2015

Abstract
A phase equilibrium study of the system aluminiumbromide and pyridiniumbromide has been carried out. The phase diagram of the system indicates the existence of three congruently melting com pounds of the molar ratio AlBr3/PyHBr 1:1, 1:3, 2 :3 and one incongruently melting compound of the molar ratio 1:2 and is therefore similar to the AlCl3-PyHCl system [1].
Ein Derivat des 1λ5,3λ5,5λ3-Triphosphabenzols / A Derivative of 1λ5,3λ5,5λ3-Triphosphabenzene
Authors: Fluck Ekkehard , Becker Gerd , Neumüller Bernhard , Kneb Robert , Heckman Gemot , Riffel Heinz 
Published: March 2015

Abstract
The title compound was prepared by reacting 1,1,3,3-tetrakis(dimethylamino)-1λ5,3λ5-diphosphete with 2,2-dimethylpropylidynephosphane and characterized by NMR spectra and X-ray structure analysis.