bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthese und Kristallstruktur von [Na-15-Krone-5][MoF5 (NCl)]
Authors: Fenske Dieter , Völp Karin , Dehnicke Kurt 
Published: March 2015

Abstract
[Na-15-Crown-5][MoF5(NCl)] has been prepared as yellow crystals by the reaction of NaF with MoF4(NCl) in the presence of 15-crown-5 in acetonitrile solution. The compound was charac­terized by its IR and 19F NMR spectra as well as by an X-ray structure determination. Crystal data: space group P21/n, Z = 4 (3736 observed, independent reflexions, R = 0.034). Lattice dimensions at -70 °C: a = 823.5(4). b = 1612.2(9), c = 1383.4(8), β = 99.35(3)°. The compound forms ion pairs, in which the sodium ion is seven-coordinated by the oxygen atoms of the crown ether molecule and by two fluorine ligands of the [MoF5(NCl)]- unit with Na-F distances of 228.3 and 249.6 pm. The Mo=N-Cl group of the anion is nearly linear (bond angle 175.8°) with bond lengths MoN = 172.9 and NCl = 161.8 pm.
Bioanorganische Modellkomplexe für Metalloproteine des Eisen(III) und Mangan(III): Synthese, Magnetismus und Kristallstrukturen von [L2Fe2(acac)2(μ-O)](ClO4)2, [L'Mn(acac)(OC2H5)]BPh4 und [L'Mn(acac)(OH2)](ClO4)2 (L = 1,4,7-Triazacyclononan, L' = N,N',N"-Trimethyl-1,4,7-triazacyclononan)
Authors: Wieghardt Karl , Pohl Klaus , Bossek Ursula , Nuber Bernhard , Weiss Johannes 
Published: March 2015

Abstract
The reaction of Fe(acac)3 (acac = acetylacetonate, 2,4-pentanedionate) with 1,4,7-triazacyclo- nonane (L) in acetone in the presence of water and NaClO4 yields green crystals of [L2Fe2
III(acac)2(μ-O)](ClO4)2 (1) a μ-oxo bridged dimer of Fe(III) the crystal structure of which has been determined. Hydrolysis of this material in an acetone/water mixture in the presence of NaBr yields the green tetramer [L4Fe4
III(μ-O)2(μ-OH)4]Br4 · 4H2O. Both compounds are strongly intramolecularly antiferromagnetically coupled. In contrast, the analogous reaction of Mn(acac)3 with L or N,N',N"-trimethyl-1,4,7-triazacyclononane (L') in ethanol or methanol yields yellow- green monomeric complexes of the type [LMnIII(acac)(OR)]+ or [L'Mn(acac)(OR)]+ (R = CH3, C2H5) which were isolated as tetraphenylborate or hexafluorophosphate salts. The crystal struc­ture of [L'Mn(acac)(OC2H5)]BPh4 (2) has been determined. If to the above reaction mixture cone. HClO4 was added, red [L'Mn(acac)(H2O)](CLO4)2 (3) precipitated. In alkaline aqueous solution [L'Mn(acac)(OH)]+ prevails. The crystal structure of 3 has also been determined. The new monomeric manganese(III) complexes have temperature independent (100-300 K) mag­netic moments of 4.8 to 5.1 μB in agreement with a high spin (d4) electronic configuration.
Darstellung und Struktur der zweikernigen tert-Butyliminovanadium(IV)-Komplexe: [(tC4H9N)2V2Cp2X2] (X = OtC4H9, Cl)
Authors: Preuss Fritz , Becker Harald , Kaub Jürgen , Sheldrick William S. 
Published: March 2015

Abstract
[(μ-NtC4H9)2V2Cp2(OtC4H9)2] (2) and [(μ-Cl)2V2Cp2(NtC4H9)2] (6) have been prepared by reac­tion of LitC4H9 with tC4H9N=VCp(OtC4H9)Cl and tC4H9N=VCpCl2, respectively. The molecular structure has been investigated by X-ray diffraction analysis. NMR and ESR Spectra indicate two types of tert-butyliminovanadium(IV) complexes: 2 (diamagnetic) and 6 (paramagnetic).
Anwendung der Mikhailovschen Allyloborierungssequenz auf Iminoborane
Authors: Paetzold Peter , Kiesgen Jutta , Plotho Christoph von , Schwan Heinrich 
Published: March 2015

Abstract
Iminoboranes RB≡NR' (1a,b; R/R' = iPr/iPr, Bu/tBu) have been allyloborated by triallylborane BAll3 (All = allyl). The resulting diborylamines All(R)B-N(R')-BAll2 undergo a thermal intra-molecular allyloboration to give azadiboracyclo-hexanes (3a, b).
Reductive Cleavage of Aryl-O-and Aryl-CI- Bonds by C8K: a Potential Method for the Degradation of Dioxins
Authors: Lissel Manfred , Kottmann Jürgen , Tamarkin Dov , Rabinovitz Mordechai 
Published: March 2015

Abstract
Potassium graphite intercalate in THF is a reagent for the reduction of aryl halides and the reductive cleavage of aryl ethers.
Antiprismatische und dodekaedrische Oktaaquokationen von Calcium und Strontium in den Kristallstrukturen von Tetrahalogenocadmaten und -mercuraten / Antiprismatic and Dodecahedral Oktaaquo Cations of Calcium and Strontium in the Crystal Structures of Tetrahalogeno Cadmates and Mercurates
Authors: Thiele Gerhard , Putzas Dietmar 
Published: March 2015

Abstract
The tetrahalogenometallates CaHgBr4·8H2O, CaCdI4·8H2O and SrCdI4·8H2O which have been obtained by crystallization from aqueous solutions form different structures. The orthorhombic compounds CaHgBr4·8H2O (Cmca, a = 1720.1(6) pm, b = 1329.2(4) pm. c = 1369.5(7) pm, Z = 8, R =0.041) and SrCdI4·8H2O (Pnma, a = 1404.6(2) pm, b = 1841.1(5) pm. c = 1420.6(3) pm, Z = 8, R = 0.037) are built up from dodecahedral [A(H2O)8 ] cations (A = Ca, Sr) and tetrahedral MX4 anions (M = Hg, Cd) which are cubic closed packed in a CuAu type structure. The tetragonal structure of CaCdI4·8H2O (P4/nbm, a = 1268.14(13) pm, c = 536.96(35) pm. Z = 2, R = 0.034) contains antiprismatic [Ca(H2O)8]2+ cations and tetrahedral Cdl4 anions, which form together a tetragonal primitive rod package.
Synthesen und Kristallstrukturen von [PPh3Me]NO2 und [PPh3 Me]HCO2H2O / Syntheses and Crystal Structures of [PPh3Me]NO2 and [PPh3Me]HCO2H2O
Authors: Essawi Mervat El , Gosmann H , Fenske D , Schmock F , Dehnicke K 
Published: March 2015

Triphenylmethylphosphonium nitrite and formate have been prepared by the reaction of [PPh3Me]I with silver nitrite, and lead formate, respectively, in aqueous solutions. [PPh3Me]NO2 (1) forms pale yellow crystals, and [PPh3Me]HCO2·H2O (2) forms white crystals. Both compounds are soluble in water, ethanol, and dichloromethane. In moist air 2 is hydrated to yield [PPh3Me]HCO2·2H2O (3). The compounds were characterized by their IR spectra, 1 and 2 also by X-ray crystal structure determinations.
[PPh3Me]NO2 (1): space group P21/n, Z = 4, 2088 independent observed reflexions, R = 0.062. Lattice dimensions (20 °C): a = 914.7(3), b = 1887.5(9), c = 1080.0(4) pm, β = 110.29(3)°. The compound consists of PPh3Me+ ions and NO2- anions with bond lengths of 114.2(6) pm and a bond angle of 124.1(7)°.
[PPh3Me]HCO2·H2O (2): space group P21/n, Z = 4, 2973 independent observed reflexions, R = 0.069. Lattice dimensions (-20 °C): a = 931(2), b = 1558(3), c = 1281(2) pm, β = 105.9(1)°. The compound consists of PPh3Me+ ions and formate anions which form centrosymmetric dimeric units [HCO2·H2O]2
2- through hydrogen bridges of the water molecules. Bond lengths CO 122.4(4) and 120.9(4) pm. bond angle OCO 129.9(4)°.
Marine Natural Products, IX A New Halogenated Sesquiterpene Pinnatifidone from the Red Alga Laurencia pinnatifida
Authors: Bano Shaheen , Ali Mohammad Shaiq , Ahmad Viqar Uddin 
Published: March 2015

Abstract
From the ethyl acetate fraction of methanolic extract of red alga, L.pinnatifida, a new halogenated sesquiterpene named as pinnatifidone [1] has been isolated and the structure of this compound has been elucidated with the help of intensive spectroscopic studies.
Selektive Metallierung von BicycIo[3.2.1]octa-2,6-dien, II Distannylierte Derivate und stannylierte tricyclische Sekundärprodukte / Selective Metalation of Bicyclo[3.2.1]octa-2,6-diene, II Distannylated Derivatives and Stannylated Tricyclic Secondary Products
Authors: Hertkorn N. , Köhler F. H. 
Published: March 2015

Abstract
Distannylated bicyclo[3.2.1]octa-2,6-diene (1) with (CH3)3 Sn groups in positions exo-4 and 7 (7a), endo-4 and 7 (7b), exo-4 and 6 (7c), and probably exo-4 and endo-4 (7d) are obtained when 1 is treated first with an excess of n-BuLi/t-BuOK in alkane and then with (CH3)3 SnCl. Byproducts are monostannylated derivatives of 1 and l,4-bis(trimethylstannyl)but-2-ene (3). The formation of 7a/b/c is best understood when the two possible bicyclo[3.2.1]octa-2,6-dienyl dianions are generated as intermediates. 3,exo-4-Bis(trimethylstannyl)bicyclo[3.2.1]octa-2,6-diene (7e) is ob-tained from the corresponding dibromo derivative of 1 and (CH3)3SnLi with 3-bromo-exo-4-trimethylstannylbicyclo[3.2.1]octa-2,6-diene (9) as an intermediate. The bicyclic stannyl com-pounds are susceptible to a 1,5-homopentadienyl shift of a (CH3)3Sn group at relatively low temperature when the starting compound has the stannyl group in position 4 of 1 and when positions 6 or 7 are unsubstituted. Tricyclo[3.2.1.02.7]oct-3-enes with (CH3)3Sn groups in positions exo-6 (5a), endo-6 (5b), 3 and exo-6 (10a), and 3 and endo-6 (10b) are thus obtained. On further heating, 10b gives l-trimethylstannyl-3-vinylbenzene (11). All compounds have been studied systematically by NMR spectroscopy including δ(119Sn), δ(13C), δ(1H), 4/5J(119/117Sn-119Sn), nJ(119/117Sn-13C) , nJ(119/117Sn-1H), 1J(13C-1H ) , and nJ(1H-1H ). Among all nuclei, 119Sn gives the most simple spectra. From the 13C NMR spectra a series of useful increments of (CH3)3Sn groups emerges. The most interesting coupling constants are 5J(119/117Sn-119Sn), for which a considerable change with the dihedral angle is established, and nJ(119/117Sn-13C). For n = 3 and 4 the latter are especially useful because their angular dependence leads to unambiguous signal assignments.
Beiträge zur Chemie des Bors, 195 [1]. Synthese, Struktur und Reaktionen eines 1,3,2,4-Aza-λ3-phosphadiboretidin-Derivats / Contributions to the Chemistry of Boron, 195 [1]. Synthesis, Structure and Reaction of a 1,3,2,4-Aza-λ3-phosphadiboretidine Derivative
Authors: Kölle Peter , Nöth Heinrich , Paine Robert T. , Rattay Wilfried 
Published: March 2015

1,3-Di(tert-butyl)-2,4-di(2′,2′,6′,6′-tetramethylpiperidino)-1,3.2.4-azaphosphadiboretidine (6a), results from a diborylamine precursor by dehalogenation in good yield. The four-membered ring of this heterocycle is nonplanar and folded by 160° at the BB axis. The energy difference between this conformation and the planar ring is rather small.
CH3I and the W(CO)5-fragment add to the phosphorus atom of 6a. However, selenium achieves a break-down of the ring. One product obtained is the selenaazadiboretidin derivative (16).
σ-Ferrocenyl-Komplexe der frühen Übergangsmetalle – Synthese und Struktur / σ-Ferrocenyl Complexes of the Early Transition Metals – Synthesis and Structure
Authors: Wedler Michael , Roesky Herbert W. , Edelmann Frank T. , Behrens Ulrich 
Published: March 2015

Abstract
Ferrocenyllithium, FcLi (1), reacts with (C5H4CH3)2TiCl2, CpTiCl, and Cp*TiCl 3 to give the new σ-ferrocenyl complexes (C5H4CH3)2TiFc2 (2), CpTiFc3 (3) and Cp*Ti(Fc)2Cl (4), respectively. Treatment of Cp*2ZrCl2 with FcLi yields the mono-substitution product Cp*2Zr(Fc)Cl (5), which has been characterized by an X-ray structure analysis. Compound 5 crystallizes in the monoclinic space group P21/c (a = 1622.3(6), b = 995.0(2), c = 1664.3(6) pm; β = 94.78(3)°; Z = 4). Due to the sterically demanding pentamethylcyclopentadienyl ligands 5 contains a long zirconium-carbon bond (231.4(8) pm) and the Cp rings of the ferrocenyl substituent are tilted by 10.2°. The syntheses of CpZrFc3 (6), Cp*HfFc3 (7) and Cp2VFc2 (8) are also described.
Darstellung und Eigenschaften von Monofluoramin, H2NF / Preparation and Properties of Monofluoramine, H2NF
Authors: Minkwitz Rolf , Naß Rüdiger 
Published: March 2015

Abstract
Monofluoramine H2NF is prepared by thermolysis of H3NF+HF2--nHF and selective absorption of HF on activated KF. In the solid state H2NF is stable below 170 K, and immediately decomposes in NH4HF2
- and N2 by melting.
[1,4,2]Diazaphospholidine / [1,4,2]Diazaphospholidines
Authors: Fluck Ekkehard , Kuhm Peter , Riffel Heinz 
Published: March 2015

Abstract
Bis(diethylamino)phosphanylacetylen reacts with N.N′-dimethyl thiourea to give 2-diethyl-amino-1,4-dimethyl-3-methylene-[1,4,2]diazaphospholidine-5-thion (2) besides the [1,3,4]thiazaphospholidine (1). The latter compound is converted into 2 by heating. Reaction of 2 with various reagents yields other members of the title compound class. All new compounds are characterized by some reactions and their NMR and IR spectra. In addition, the results of an X-ray structure analysis of 2-diethylamino-l ,4-dimethyl-3-methylene-2-thioxo-[1,4,2]diazaphos-pholidine-5-thion (5) are reported.
Über die Reaktion einiger P(III)—OSiMe3-Verbindungen mit Hexafluoraceton / Reaction of Some P(III) —OSiMe3 Compounds with Hexafluoroacetone
Authors: Weferling Norbert , Schmutzler Reinhard 
Published: March 2015

Abstract
The P(III)trimethylsilylesters. RP(OSiMe3)2 (R = Me, Ph) and MeP(OBu")(OSiMe3). were synthesized by the silylation of the appropriate P(III)(:O)(H) compound with dimethylaminotrimethylsilane. Their reaction with hexafluoroacetone was studied with a view of synthesizing P-functional λ5P-trimethylsiloxy phosphoranes. From RP(OSiMe3)2 the expected bis(trimethylsilyl) perfluoropinacolyl phosphoranes, RP(OSiMe3)2(pfp = perfluoropinacolyl). were obtained. Their stability was limited, and transformation to the known λ4P species. RP(:O)(pfp), was observed. From the mixed P(III) ester, MeP(OBu")(OSiMe3). formation of a λ5P species was not observed, and the product was the same. MeP(:O)(pfp). A possible isomerization scheme for perfluoropinacolylbis(trimethylsiloxy)phosphoranes is discussed
Die Verfeinerung der Kristallstruktur von UTe2 / Refinement of the Crystal Structure of UTe2
Authors: Beck H. P. , Dausch W. 
Published: March 2015

Abstract
The crystal structure of UTe2 has been refined with single crystal data. The structure model proposed by Klein Haneveld and Jellinek on the basis of powder data could be verified (Sp. Gr. Immm, a = 415.9(1) pm, b = 612.4(2) pm, c = 1394.5(9) pm). Oxidation states are discussed on the basis of interatomic distances.
[M(II)([15]Krone-5)(L)2 ]++ -Komplexe -der Einfluß des Kronenetherhohlraums auf die Mobilität der Liganden L / [M(II)([15]Crown-5)(L)2]++ Complexes - The Influence of the Crown Ether Cavity on the Mobility of the Ligands L
Authors: Dickert Franz L. , Gmeiner Wolfgang , Feigl Matthias 
Published: March 2015

Abstract
The mobility of coordinated methanol in the complex [Co(II)(Benzo[15]crown-5)(CH3OH)2]f + was studied in nitromethane. The methanol exchange mechanism tends to an associative nature with an increasing amount of methanol in the solutions as can be deduced from the activation entropy. All activation data can be combined in an isokinetic relationship which is also valid for the respective complex with the unsubstituted [15]crown-5 ether ligand
Zur Kenntnis des Systems CsF/CuF2: Über Cs7Cu6F19 [1] / On the Knowledge of the System CsF/CuF2: On Cs7CuhF19 [1]
Authors: Kissel Dieter , Hoppe Rudolf 
Published: March 2015

Abstract
In the system CsF/CuF2 Cs7Cu6F19 was obtained as transparent pale blue single crystals [closed Au-tube; carefully dried Ar; 4 weaks 720 °C. 12 weaks 760 °C] and its structure was determined. The crystals are moisture sensitive.
The new fluorocuprate(II) crystallizes in the monoclinic system (P21/c) with a = 1173.1(1) pm; b = 626.56(6) pm; c = 1568.5(2) pm; β = 99.18° and Z = 2.
In the structure there are units of three face shared octahedra [Cu3F12] as in Cs4Cu3F10. These triples of octahedra are connected to "double-layers" a remarkable difference as compared to Cs4Cu3F10. The distances d(Cu-F) are ranging from 185.3 to 240.5 pm.
The Madelung Part of Lattice Energy, MAPLE, has been calculated and discussed and related to Effective Coordination Numbers, ECON, via Mean Fictive Ionic Radii. MEFIR
Cu2[Ph-C(NSiMe3)*]2, ein Amidinatokomplex mit kurzem Cu ··· Cu-Abstand / Cu2[Ph —C(NSiMe3)2]2, an Amidinato Complex with a Short Cu - Cu Distance
Authors: Maier Susanne , Hiller Wolfgang , Strähle Joachim 
Published: March 2015

Abstract
The copper(I)amidinato complex Cu2[Ph-C(NSiMe 3)2] ; has been prepared by the reaction of CuCl with N.N,N'-tris(trimethylsilyl)benzamidine in boiling acetonitrile. forming white crystals. The compound was characterized by its IR spectrum as well as by an X-ray structure determina-tion. Crystal data: space group P1̄, Z = 2 (2851 observed independent reflexions, R = 0.047). Lattice dimensions at 20 °C: a = 1135.0(3); b = 1219.6(4); c = 1372.4(4) pm; a = 106.74(3)°; β= 107.92(4)°; y = 91.40(4)°. The compound forms dimeric molecules with a short Cu···contact of 242 pm and two chelating amidinato ligands with Cu-N bond lengths of (averaged) 189.0 pm and bond angles N -C-N of 124.1°.
11B-NMR-Spektren von Alkyl-, Halogeno- und Rhodanohydrohexaboraten / 11B NMR Spectra of Alkyl-, Halogeno- and Rhodanohydrohexaborates
Authors: Heinrich A. , Preetz W. , Marsmann H. C. 
Published: March 2015

Abstract
The temperature dependence of the 11B NMR spectra of the monosubstituted and protonated c/oso-hexaborates RB6H6
-, R=CH3, C2H5, C3H7, C4H9 C8H17, (SCN)B6H6
- and XB6H6 X = Cl. Br. I, has been determined in the range 180-300 K. The extra proton migrates at higher temperatures intramolecularly, probably across the edges of the B6 core. The extra proton is fixed to a facet of the octahedron below the coalescence temperatures 240 K (RB6H6
-) and 210 K (XB6H6
-) as recognized by the splitting of the signal of the equatorial B atoms due to the lowering of the symmetry from C4v to Cs . From the spin-spin coupling it can be deduced that the proton prefers with the softer Brönsted acids RB6H6
- facets adjacent to the substituent, while with the stronger Brönsted acids XB6H6
- facets including the antipodal B atom are occupied.
On the Chemistry of Phorbol, XIX [1] Preparation of Tritium-Labelled 12-O-RetinoyIphorbol-13-acetate([20-3H]-RPA)
Authors: Tremp G. L. , Hecker E. 
Published: March 2015

Abstract
In contrast to established principles of radioactive labelling of diterpene esters such as TPA it was impossible to introduce tritium into the highly sensitive 12-0-retinoylphorbol-13-acetate (RPA) via reduction of its cold 20-aldehyde with [3H]-sodium borohydride. As an alternative successful procedure, [20-3H]-phorbol-13-acetate was prepared at first. It was protected in position 20 by reaction with tritylchloride and the tritylether reacted with retinoic acid. In both reactions appropriate phorbol acetates were used as easy to separate cold carriers. After removal of the 20-tritylether group, [20-3H]-RPA of a specific activity was obtained that was sufficient for the compound to be used as a tool in biochemical investigations
Molekül- und Kristallstruktur des l,l-Diethyl-3,5-dimethyl-1λ6,4,2,6,3,5- dithiadiazadiborins / Molecular and Crystal Structure of l,l-Diethyl-3,5-dimethyl-1λ6,4,2,6,3,5- dithiadiazadiborine
Authors: Habben Carl D. , Noltemeyer Mathias 
Published: March 2015

Abstract
The title compound, isolated from the reaction of SS-diethyl-N,N'-bistrimethylsilylsulfodiimide and 3.5-dimethyl-1,2,4-trithiadiborolane, crystallizes in space group Pbca with cell constants a - 1218.7(6), b = 1295.8(6), c = 1455.7(9) pm, V = 2.2987 m-3, Z = 8, ϱ = 1.167 Mg m-3. The X-ray structure was refined to R = 0.053
Phasendiagramme einiger Methylhalogensilane mit Pyridin und Lutidin Phase Diagrams of Methylhalogenosilanes with Pyridine and Lutidine
Authors: Hensen Karl , Dräbing Michael 
Published: March 2015

Abstract
By analyzing the phase diagrams of some trimethylhalogenosilane/pyridine- and methyl-trichlorosilane/lutidine-systems the existence of the incongruently melting addition compounds Me3SiF · (Pyridine)2, Me3SiCl · (Pyridine)2, MeSiCl3, · (2.5-Lutidine)2, MeSiCl3, · (2.6-Lutidine)2, (MeSiCl3)2 · 3.5-Lutidine, and the congruently melting compounds MeSiCl3 · 2.4-Lutidine, MeSiCl3 · (3.5-Lutidine)2 was proven.
Reaktionen der Natrium-Komplexe aromatischer Ether mit Dichlor(diorganylamino)boranen/Reactions of Sodium Complexes of Aromatic Ethers with Dichloro(diorganylamino)boranes
Authors: Maringgele Walter , Meller Anton 
Published: March 2015

Abstract
The reaction of anisole with Na/K-alloy and subsequent reaction with dichloro(diisopropyl-amino)borane yields diisopropylamino(diphenoxy)borane (1). In reacting the sodium complex of 1-or 2-m ethoxynaphthalene, respectively, with dichloro(diorganylamino)boranes the ether bond is cleaved. One obtains the methoxy-2-naphthoxy-diorganylam inoboranes (2a -d) besides the di-2-naphthoxy-diorganylam inoboranes (3a-e), the 2-naphthoxy-bis(diorganylamino)boranes (4a-b) and the solvated sodium-2-naphtholate (6). By-products are 1,2-bis[(diisopropylamino)-1- or 2-naphthoxyboryl]ethyne derivatives 5a and 5b, terized analytically and spectroscopically (MS; NMR: 1H, 11B, 13C).
Notizen: Phasendiagramme von Systemen, bestehend aus Aluminiumhalogeniden und Pyridiniumhalogeniden, III. Die Phasendiagramme der Systeme Aluminiumbromid-Pyridiniumiodid und Aluminiumchlorid-Pyridiniumbromid/Phase Diagrams of Aluminium Halide- Pyridinium Halide Systems, III. Determination of the Phase Diagrams Aluminium Bromide-Pyridinium Iodide and Aluminium Chloride-Pyridinium Bromide
Authors: Seemann Gerd , Hensen Karl 
Published: March 2015

Abstract
Phase equilibrium studies of the Lewis acid-base systems AlCl3/PyHBr and AlBr3/PyHI indicate the existence of congruently melting compounds of the molar ratios 1:1 and 2:3.
These results are quite different from those of our studies of the AlCl3/PyHCl and the AlBr3/PyHBr systems, in which four compounds in the molar ratios 1:1, 1:2, 1:3, and 2:3 could be detected.
The melting point of pyridinium iodide observed at 284,8 °C (decomp.) differs from the previously reported one.
Chemie an starren Grenzflächen, 11. Aerosile mit kovalent beweglich und starr verknüpften Fluoreszenzträgern / Chemistry on Rigid Surfaces, 11. Aerosils with Covalently Movable and Rigid Linked Fluorophors
Authors: Horner Leopold , Hallenbach Werner , Vogt Manfred 
Published: March 2015

Abstract 5-Dimethylamino-1-naphthalene-carbonic acid chloride (1), the analog of dansylchloride, is synthesized. With diazomethane the diazoketone 2 is obtained. The modified aerosil A is formed by the interaction of 1 with amino-aerosil. The density of the coverage is available a) chemically by dissolving the inorganic matrix of A with H2F2 and spectroscopic determination of the formed n-butylamide 9, b) by fluorescence spectroscopy and c) by U V spectroscopy.
Silanole groups both in organic substituted compounds and in aerosil react with the fluorescent silanes 6 and 7 using CsF/imidazole-catalysis forming the corresponding siloxanes according to (4 b) and (8).
The modified aerosils C, D and E are prepared in this way and characterized.
The functionalization of amino-aerosil with 7-chloro-4-nitrobenzeno furazane (10) leading to the modified aerosil B is unsatisfactory.
Reaktionen von N-Lithio-N, N′-di(t-butyl)-S-phenylsulfinsäureimidamid mit Chloriden der Elemente der 4. Gruppe des Periodensystems Struktur des O[TiCl2N2(But)2SPh]2/Reactions of N -Lithio-N ,N′-di(t-butyl)-S -phenylsulfinic Acid Imidamide with Chlorides of the Elements of Group 4 of the Periodic System Structure of O[TiCl2N2(But)2SPh]2
Authors: Roesky H . W . , Mainz B. , Noltemeyer M. 
Published: March 2015

Abstract
N-Lithio-N,N′-di(t-butyl)-S-phenylsulfinic acid imidamide (1) reacts with TiCl4, SiCl4, GeCl4,
SnCl4 and Ph2SnCl2 with monosubstitution at the metal center to yield compounds 2-6. TiCl3N2(But)2SPh (2) slowly hydrolyzes to form O[TiCl2N2(But)2SPh]2 (7). The molecular structure of 7 was investigated by an X-ray structure analysis.
Steroids from Aquatic Organisms, XIX. New Sterols from the Antarctic Sponge Artemisina apollinis
Authors: Seldes Alicia M. , Deluca Mónica E. , Grosa Eduardo G. , Rovirosa Juana , San-Martín Aurelio , Darias José 
Published: March 2015

Abstract
The steroidal composition of the sponge Artemisina apollinis from the Antarctic Ocean was studied by GC-MS and 'H NMR. The sponge contains twenty-eight C 25—C30 derivatives having four different types of nucleus: 3/3-hydroxy-5aH-, 3-keto-5aH-derivatives, 3/3-hydroxy-zl5-and 3/?-hydroxy-zl7-derivatives. Compounds with the first two nucleus are the most abundant, with similar side chain patterns and identical GC profiles. The 3-keto-5aH-derivatives constitute a new group of natural products.
A Convenient Method for the Preparation of (±)Juvenile Hormone III
Authors: Rodriguez Juan B. , Gros Eduardo G. 
Published: March 2015

Abstract
Following a different approach methyl (2 E ,6 E)-farnesoate (4) was prepared in three steps from trans-geranylacetone (1). Compound 4 was regioselectively epoxidized to (±)juvenile hormone III.