bluuebunny/crossref_metadata_2025_split huggingface dataset:
Notizen: Quinolyl-nitro Ethylenes and Nitrostyryl-quinolines of Molluscicidal Activity
Authors: Kamel M. M. , Korkor M. I. , Shoeb H. A. , Tammam G. H. , El - Amin S. 
Published: February 2015

Abstract
For possible molluscicidal activity, 1-(4- quinolyl)-2-nitro ethylenes, 1-(4-quinolyl)-2- methyl-2-nitro ethylenes, 2-styryl, and 2- (p-nitro styryl)-quinolines were synthesized.
Notizen: Reaktionen von Malonsäurediamid mit SbCl5 / The Reaction of Malonamide with Antimony(V)chloride
Authors: Dietrich W. , Latscha H. P. 
Published: February 2015

Abstract
Malonamide reacts with antimony(V)chlorid to a 1:2-adduct (1) at roomtemperature. By heating this complex dichloromalonamide (2) was formed; hydrolysis of the complex yields a new heterocycle with the composition C3H4Cl5N2O2Sb (3).
Über eine neue Präparationstechnik in der Feststoffchemie, II Hochdruck-Hochtemperatursynthesen mit CO2 -Laser / A New Preparative Technique in Solid State Chemistry, II High Pressure -High Temperature Reactions with CO2-Lasers
Authors: Müller-Buschbaum Hk. , Pausch H. 
Published: February 2015

Abstract
A new technique to realize solid state reactions under high oxygen pressure is reported. This method is based on the use of CO2-Laser radiation in combination with autoclave technique. The experimental set-up is described.
Zur Synthese phosphinkomplexierter d8-Metalltetrasulfide (Ni(II), Pd(II) und Pt(II)) mit Natriumpolysulfiden / On the Synthesis of Phosphine-Coordinated d8-Metal Tetrasulfides (Ni(II), Pd(II), and Pt(II)) with Sodium Polysulfides
Authors: Schmidt Max , Hoffmann Gerhard G. 
Published: February 2015

Abstract
A short literature survey on phosphine-coordinated d8-metal tetrasulfides is given. Different results have been reported for the reactions of elemental sulfur with Pt(PPh3)4 (1). The reaction of sodium polysulfides, Na2Sx, with the corresponding dihalides results in a clear-cut manner in the formation of the already known compounds tetrasulfidoethylenebis(diphenylphosphine)palladium(II) (6) and tetrasulfido-bis(triphenylphosphine)-platinum(II) (5), and the new compound tetrasulfido-ethylenebis(diphenylphosphine)-nickel(II) (13). Degradation reactions of [Pt(S5)3]2-(9) with triphenylphosphine, tri-p-tolylphosphine and ethylene-bis(diphenylphospbine) result in the formation of 5, and tetrasulfido-ethylenebis(diphenylphosphine)platinum(II) (4) and the new tetrasulfidobis( tri-p-tolylphosphine)platinum(II) (10). IR-spectra are reported.
Das Verhalten von Mono- und Diorganylphosphansulfiden gegenüber Metallcarbonylsystemen, XXI [1]Darstellung und Eigenschaften von Di[μ-{(dicarbonyl-h5-cyclopentadienylmangan) dimethylphosphin}thio]-bis- (tetracarbonylrhenium), (OC)4Re[h5-C5H5Mn(CO)2P(CH3)2S]2- Re(CO)4 / The Behaviour of Mono and Diorganylphosphane Sulphides towards Metal Carbonyl Systems, XXI [1] Preparation and Properties of Di[μ-{(dicarbonyl- h5-cyelopentadienylmanganese)- climethylphosphine}thio]-bis(tetracarbonylrhenium), (OC)4Re[h5-C5H5Mn(CO)2P(CH3)2S]2Re(CO)4
Authors: Lindner Ekkehard , Hoehne Sigurd , Rodatz Kurt - Wolfram 
Published: February 2015

Abstract
(OC)4Re[h5-C5H5Mn(CO)2P(CH3)2S]2Re(CO)4 (1) containing a four-membered heterocycle with rhenium sulphur bonds is obtained from Na[h5-C5H5Mn(CO)2P(CH3)2S] and ClRe(CO)5 in THF at 60 °C. The 1H, 31p NMR and IR spectra are discussed. On the basis of x-ray pre­cession photographs both h5-C5H5Mn(CO)2P(CH3)2 groups in 1 are in an anti position.
Darstellung und Kristallstruktur von Silber-Barium-Thiogermanat(IV). Ag2BaGeS4 / Preparation and Crystal Structure of Silver-Barium-Thiogermanate(IV). Ag2BaGeS4
Authors: Teske Chr. L. 
Published: February 2015

Abstract
Ag2BaGeS4 was prepared for the first time and the crystal structure determined using X-ray methods, a - b = 682,g; c = 801,7 pm, Space group I4̅2 m (No. 121) tetragonal. The atomic parameters and interatomic distances are reported and the structure is discussed.
Darstellung und Charakterisierung von chiralen und achiralen exocyclischen π-enyl-Komplexen der Zusammensetzung (C8H13PdCl)2 / Synthesis and Characterization of Exocyclic π-Enyl Complexes of the Composition (C8H13PdCl)2
Authors: Ratka Richard , Ziegler Manfred L. , Schilling Gerhard 
Published: February 2015

Abstract
The mechanism of formation of the exocyclic dimeric π-enyl complex (C8H13PdCl)2 by reaction of 1,3-dimethylenecyclohexane, C8H12 with trans-PdCl2(C6H5CN)2 is discussed. Through UV, 1H NMR (90 MHz, 360 MHz) and 13C spectroscopic studies it was possible to show that the dimer is formed by the disproportionate of C8H12 to C8H14 and m-xylene, and further that it consists of diastereomeric products. The reaction of (-) R-3-methyl-1-methylencyclohexane, C8H14, with the Pd-salt confirms that during the reaction between C8H12 and trans-PdCl2(C6H5CN)2 no free C8H14 is formed in solution.
Studies on cleavage reactions of the dimer are also described in this paper.
Ramanspektroskopische Untersuchungen an festen und in Wasser gelösten Polyboraten / Investigations of Solid Polyborates and their Aqueous Solutions by Raman Spectroscopy
Authors: Janda Ralf , Heller Gert 
Published: February 2015

Abstract
Raman spectra of solid H3BO3, Na2[B4O5(OH)4] · 8 H2O, K[B5O6(OH)4] · 2H2O and Na[B(OH)4] were recorded between 300 and 1500 cm-1 as well as of borax in aqueous solutions as a function of concentration and pH. Because of better solubility in water, the Raman spectrum of ammonium tetraborate in aqueous solution was also recorded as a function of pH. For comparisons the Raman spectra of solid (NH4)2[B4O5(OH)4] · 2 H2O, β-NH4[B5O6(OH)4] · 2 H2O, NH4[B5O6(OH)4] · 0,67 H2O and NH4[B5O6(OH)4] were considered. In solution, all lines in the Raman spectra could be assigned and the degree of depolarization measured. The assigned Raman frequencies can be used for the identification of unknown B-O-lines and therefore of unknown borate or polyborate structures.
Phosphoroxidhalogenid-Komplexe der Uran(IV)-halogenide, UX4 · 2 POX3 (X = Cl, Br), und ein Dichlorophosphat des Uran(VI) / Phosphorylhalide Complexes of the Uranium(IV) Halides, UX4 · 2 POX3 (X = Cl, Br) and a Dichlorophosphate of Uranium(VI)
Authors: Dyck Werner M. , Dehnicke Kurt 
Published: February 2015

Abstract
The complexes UX4 · 2 POX3 (X = Cl, Br) are prepared by the reaction of excess POX3 with the corresponding uranium pentahalides. The dichlorophosphate, CLUO2(O2PCl2) · POCl3, is prepared by treating UCl2 · 2 POCl3 with dichloromonoxide. According to the IR spectra the POX3 solvate molecules are cis coordinated via oxygen. An improved method to prepare uranium pentaehloride is described in detail.
Darstellung und Charakterisierung von cis-und trans-Dihalogeno-bis-acetylacetonato-osmaten(IV) / Preparation and Characterization of cis-and trans-Dihalogeno-bis-acetylacetonato-osmates(IV)
Authors: Preetz W. , Petersen H. 
Published: February 2015

Abstract
Cis-and trans-[OsX2(acac)2], X = Cl, Br, I, are prepared by heating of K2[OsX6] in a 1:1 mixture of acetylacetone: water. The pure stereoisomeres are separated by chromato-graphy on silica gel. The new complexes are characterized by UV-Vis, IR and Raman spectra.
Übergangsmetall-subsituierte Phosphine, Arsine und Stibine, 19 [1]Synthese und einige Eigenschaften übergangsmetall-substituierter Arsinsulfide / Transition Metal Substituted Pliosphines, Arsines and Stibines, 19 [1]Synthesis and Some Properties of Transition Metal Substituted Arsine Sulfides
Authors: Malisch Wolfgang , Janta Reinhard , Künzel Günter 
Published: February 2015

Abstract
The transition metal arsines C5H5(CO)2LM-As(CH3)2 (M = Mo, W; L = CO, P(CH3)3) react with elementary sulfur (selenium) in CS2 to give the transition metal substituted arsine chalcogenides C5H5(CO)2LM-As(CH3)2S(Se). Due to the pronounced basicity of the chalcogen centre they are easily converted into cationic mononuclear complexes [trans-C5H5(CO)2P(CH3)3Mo-As(CH3)2SR]⊕X⊖ by alkylhalides, and into bridged dinuclear complexes tans-C5H5(CO)2P(CH3)3Mo-As(CH3)2S-MLn on treatment with THF · Cr(CO)5 or AgI. The structures of the new compounds are established by spectroscopic investigations.
Studies on Thiocarbonyl Olefination Reactions with Phosphonium Ylides
Authors: Tewari R. S. , Suri S. K. , Gupta K . C. 
Published: February 2015

Abstract
Reactions of several semi-stabilized phosphonium ylides with 2,7-dibromofluorenethione and thiobenzophenone, have been reported to give substituted 9-benzylidene-2,7-dibromo-fluorenes and 1-(substituted phenyl)-2,2-diphenyl ethylenes respectively in fair to good yields. The structural identities were based on spectral data.
Calculation of Acidity Constants of Protonated Weak Organic Bases by a New Method, III* Ethers
Authors: Levitt L. S. , Levitt B. W. 
Published: February 2015

Abstract
It is shown in this paper that a consistent set of values of pKBH⁺ for 24 ethers, in good agreement with the few which have been obtained by other methods, can be calculated from a correlation of the HCl solubility in the ethers with ∑σI of the R groups, and also with the gas phase I.P.'s of the ethers. We find that in solution the order of basicity is ROH>R2O>H2O whereas in the gas phase it is R2O>ROH>H2O. Evidence for complete H+ transfer to R2O is deduced for most cases, but a H-bonding "basicity" occurs for the less basic ethers. A brief review of previously obtained pKBH⁺'s for some ethers, MeOH, and H2O is also presented.
Studies on Spiro Azetidinones and Spiro Thiazolidinones, III Synthesis of Some New Spiro Azetidinones, Spiro Thiazolidinones, Bis-azetidinones and Bis-thiazolidinones
Authors: Hassan Kh. M. , Khalil Z. H. 
Published: February 2015

Abstract
Cyclocondensation reaction of 3-isatylideneoxime (1a), -hydrazone (1b), -phenyl-hydrazone (1c), semicarbazone (1d) and -thiosemicarbazone (1e) with chloroacetyl chloride (and thioglycolic acid) gave the corresponding spiro azetidinones (2) and spiro thiazolidinones (3). 3-Isatylidenehydrazone (1b) was condensed easily with aromatic aldehydes afforded a new 3-isatylidene azomethines (4) which submitted for cyclocondensation reaction with chloroacetyl chloride (and thioglycolic acid) giving bis-azetidinones (5) and bis-thiazolidinones (6), respectively.
Darstellung von Cs3[V(NO)(H2NO)(CN)4] · 2H2O - einem neuen Nitrosyl-oxamido (O,N) Komplex des Vanadins / Preparation of Cs3[V(NO)(H2NO)(CN)4] · 2H2O - a New Nitrosyl-oxamido (O,N) Complex of Vanadium
Authors: Quilitzsch U. , Wieghardt K. 
Published: February 2015

Abstract
The preparation and characterization of Cs3[V(NO)(H2NO)(CN)4] · 2 H20 a nitrosyl-oxamido(O,N) complex of vanadium is reported.
Dimeres Aquo(malonenamidoximato)-(2-ketomalonenamidoximato)-nickel(II) / Dimeric Aquo(malonenamide-oximato)- (2-ketomalonenamide-oximato)-nickel(II)
Authors: Endres Helmut , Nuber Bernhard 
Published: February 2015

Abstract
NiC6H14N8O6 is obtained in a dimeric form, bridged by oxime O atoms, as a by-product during the preparation of bis(malonenamide-oximato)nickel(II). It crystallizes in the mono-clinic space group P21/c with a = 10.053(3), b = 9.338(3), c = 13.392(3) Å, β = 92.09°. The structure was solved by direct and Fourier methods and refined by least squares to R = 0.071 for 2462 intensities.
Ternäre Carbide von Cr, Mo und W mit Platinmetallen / Ternary Carbides of Cr, Mo and W with Platinum Metals
Authors: Holleck Helmut 
Published: February 2015

Abstract
Ternary high temperature carbides were found in the system Cr-Ru-C, Cr-Rh-C, Cr-Ir-C, Cr-Pt-C, Mo-Ru-C, Mo-Rh-C, Mo-Os-C, Mo-Ir-C, Mo-Pt-C, W-Ru-C, W-Rh-C, W-Os-S and W-Pt-C. The com-pounds crystallize in the face centered cubic structure. The carbon content changes systematically with the content and the valence electron concentration of the respective platinum metal.
Notizen: Zur Strukturchemie der Phase Al2O3 · 2 P2O5 · 9 H2O / On the Structural Chemistry of the Phase Al2O3 · 2 P2O5 · 9 H2O
Authors: Kniep Rüdiger , Wilms Axel 
Published: February 2015

The crystal structure of the phase Al2O3 · 2 P2O5 · 9 H2O contains two different structural units: isolated PO4 tetrahedra and larger aggregates consisting of two AlO6 octahedra connected with three PO4 tetrahedra by common vertices. Location of hydrogen positions failed. Interpretation of bond distances and molecular symmetry leads to a structural formula
[Al2(H1+xPO4)3(H2O)6](H3-3xPO4);
0 ≦ x ≦ 1
indicating proton disorder. Proton conductivity seems to be possible.
Reaktioneil mit N,N-Bis(trimethylstannyl)trifluormethansulfonamid und die Röntgenstrukturanalyse eines zwölfgliedrigen Schwefel-Stickstoff-Ringes / Reactions with N,N-Bis(trimethylstannyl)trifluoromethanesulfonamide and the X-ray Structure of a Twelve-Membered Sulfur-Nitrogen-Ring
Authors: Roesky Herbert W. , Diehl Manfred , Krebs Bernt , Hein Michael 
Published: February 2015

The title compound N,N-bis(trimethylstannyl)trifluoromethanesulfonamide (1) reacts with S2Cl2, SOCl2 and SO2Cl2 in a molar ratio 2:1 to yield the compounds

S2Cl2 a twelve-membered ring 6. These are the largest neutral sulfur-nitrogen rings of coordination number two at the sulfur atoms known to date. 3 reacts with SOCI2 under migration of a methyl group from the tin to a sulfur atom to yield CF3SO2(R3Sn)NS(CH3)NSO2CF3 (7).
2,2,4,4-Tetramethyl-1,3-bis(trifluormethylsulfonyl)cyclodisilazan and 7 are formed by the reaction of 3 with R2SiCl2- The analogous four-membered germanium compound 8 is obtained from 1 and R2GeCl2. While the pyrolysis of 1 yields only the six-membered cyclotristannazan 9, the six-membered germanium analog is only formed in minor amounts. By treating 9 with R3SiCl the ring is decomposed to give 10. A six-membered ring is formed from the reaction of 1 with ClR2SiOSiR2Cl 11. The structure of 6 is discussed in detail. 6 crystallizes in the monoclinic space group C2/c with a = 24.408(5), b = 7.377(2), c = 16.715(3) Å, β = 117.16(3)° and Z = 4. It has a chair conformation which is different from the isoelectronic S12-structure.
Mineralisierung von 14CCl2F2 durch Oberflächenkatalyse / Mineralisation of 14CCl2F2 Catalysed by Active Surfaces
Authors: Bahadir M. , Schmitzer S. Gäb, J. , Körte F. 
Published: February 2015

Abstract
The reaction behaviour of CCl2F2 adsorbed on silica gel and a natural adsorbent (Mecca Sand) was investigated by means of the 14C-labelled compound. While in the dark no conversion of the substance on silica gel was detected, a significant degradation to 14CO2 was observed on the dry sand. The mineralisation (up to 70%) was due to the applied amount of sand. On irradiation with UV light (λ > 290 nm) the 14CCl2F2 adsorbed on silica gel was partially degraded to 14CO2. However, the mineralisation rate of about 1 % was of less importance in comparison to the rate on the dry sand. The results indicate that the mineralisation takes place at “active sites” on the surface.
Kristall- und Molekülstruktur von Tetrakis(4-fluorophenylisonitril)rhodium(I)chloridhydrat und Tetrakis(4-nitrophenylisonitril)rhodium(I)chlorid / Crystal and Molecular Structure of Tetrakis(4-fiuorophenylisonitrile)rhodium(I) Chloride Hydrate and Tetrakis(4-nitrophenylisonitrile)rhodium(I) Chloride
Authors: Endres Helmut , Gottstein Norbert , Keller Heimo Jürgen , Martin Reinhold , Rodemer Willi , Steiger Wolfgang 
Published: February 2015

Abstract
4-Fluorophenylisonitrile and 4-nitrophenylisonitrile react with μ-dichloro-bis[dicarbo-nylrhodium(I)] [Rh(CO2)Cl]2 yielding the blue tetrakis(4-fluorophenylisonitrile)rhodium-(I)chloride hydrate (1) and the dark green tetrakis(4-nitrophenylisonitrile)rhodium(I) chloride (2). Yellow Perchlorates 3 (of 1) and 4 (of 2) can be obtained from both compounds. 1 crystallizes in the monoclinic space group P 21/c with a - 10.57(2) Å, b = 11.459(5) Å, c = 23.71(5) Å, β = 107.14(4)°, Z = 4. Compound 2 crystallizes in the triclinic space group P1̄ with a = 12.34(4) Å, b = 10.704(3) Å, c = 13.703(3) Å, α = 106.58(2)°, β = 106.07(4)°, γ = 108.29(3)°, Z = 2. 3 belongs to the rhombic space group Pnmm or Pnm2 with a = 11.523(4) Å, b= 15.48(1) Å, c= 15.915(9) Å, Z = 4 and 4 is triclinic with a = 6.987(4) Å, b = 14.300(7) Å, c == 16.983(7)1, α = 71.89(3)°, β = 89.20(4)°, γ = 79.54(4)°, Z = 2.
The structures of 1 and 2 were determined by Patterson and Fourier methods from diffractometer data and refined by least squares to R - 0.062 (1) or R = 0.157 (2). Crystals of both compounds contain metal-to-metal bonded dimers with a Rh-Rh bond distance of 3.207(2) Å in 1 and 3.25(1) Å in 2. the ligands of the two adjacent complex units taking an eclipsed position. These dimers are arranged in layers. There is a second type of layer in 1 containing the water molecules which are hydrogen bonded to the chloride counterions. The blue color of 1 is caused by a strong absorption at 16700 cm-1 (597 nm). 2 has a similar absorption band at 16500 cm-1 (606 nm). Compounds 3 and 4 contain the monomeric complex units.
Zustandsdiagramme der Systeme K2S-Tl2S und Rb2S-Tl2S / The Systems K2S-Tl2S and Rb2S-Tl2S
Authors: Gehle Egbert , Sabrowsky Horst 
Published: February 2015

Abstract
The hexagonal red compound K4Tl2S3 (a - 1060, c = 711.0 pm; Z = 2) and the monoclinic red K7TlS4 (a = 1225, b = 1646, c = 1408 pm, β = 103.2°; Z = 8) were found in the system K2S-Tl2S by DTA and X-ray investigation; Rb4Tl2S3 (hexagonal with a = 1074 and c = 767.4 pm; Z = 2) is the only compound in the system Rb2S-Tl2S.
Derivatives of cis-NPCl2(NSOCl)2 and (NPCl2)2NS0Cl, Part XIII [1] Methyl- and Ethylamino Derivatives of the Ring System cis-NPCl2(NSOX)2 with X = Chlorine and Fluorine
Authors: Cnossen-Voswijk C. , van de Grampel J. C. 
Published: February 2015

Abstract
Aminolysis of cis-NPCl2(NSOX)2, with X = Cl or F, by MeNH2 and EtNH2 proceeds via a geminal substitution pattern. Preparation of the mono-and disubstituted derivatives is described, the NMR data are discussed.
Vier- und fünfgliedrige Phosphorheterocyclen, XXXVIII [1] Azaphospholo-benzoxazaphosphole - Synthese, Prototropie und Struktur / Four- and Five - membered Phosphorus Heterocycles, XXXVIII [1] Azaphospholo-benzoaxazaphospholes - Preparation, Proton Shift and Structure
Authors: Schmidpeter Alfred , Weinmaier Josef Helmut 
Published: February 2015

Abstract
The o-hydroxyanile of cinnamic aldehyde reacts with methyl, phenyl, oxy-, and aminochlorophosphanes in a combined substitution and oxidative addition to give phosphoranes with the above mentioned bicyclic structure containing phosphorus as bridgehead. For the aminosubstituted species the reaction is followed by a 1.3 proton shift in the C3 moiety from the cinnamic aldehyde.
Whether the bicyclic system occupies meridional of facial positions of the phosphorus trigonal bipyramid is shown to depend on the nature of the phosphorus substituents. An X - ray structure determination of a tricyclic derivative with axial annelation shows the deviation from the ideal trigonal bipyramidal geometry to lie on the Berry pseudorotion pathway
Struktur eines Spirobi(cyclophosphazens) [1] / Structure of a Spirobi(cyclophosphazene) [1]
Authors: Schmidpeter Alfred , Eiletz Heinz 
Published: February 2015

Abstract
Proton addition to the spirobi(cyclotriphosphazene) anion 1 gives the neutral species 2. An X-ray structure determination shows the proton to be located at a nitrogen atom next t o the spirocenter. The structural consequences of this protonation can be demonstrated by comparisons of intramolecular bond distances and angles and can be understood in terms of structure-determining repulsive N/N interactions in the central PN4 unit
Synthese und Charakterisierung der Spezies R–C7H7Cr(CO)3 mit R = CH3COCH2-, CH3CO(CH3)CH-, CH3COCHCH(CH3)2– / Synthesis and Characterization of the Species R-C7H7Cr(CO)3 with R = CH3COCH2-, CH3CO(CH3)CH - , CH3COCHCH(CH3)2–
Authors: Zahedi Farhad , Ziegler Manfred L. 
Published: February 2015

Abstract
The species R-C7H7Cr(CO)3 (R = -CH2COCH3 , -CH(CH3)COCH3 , -CH(CH)CH3)2COCH3) have been synthesized by reaction of [η7-C7H7Cr(CO)3][BF4] with suitable ketones in the presence of bases like OH- and F- , suggesting a nucleophilic addition of the enolate ion to the cycloheptatrienyl ligand. 1H NMR spectra revealed the CH3-CO-CH(CH3) group being bonded to the cycloheptatriene ligand via the a-carbon atom of the ethyl group
Tetrakis(trimethylsilyl)distiban / Tetrakis (trimethylsilyl) distibane
Authors: Breunig Hans Joachim , Breunig-Lyriti Vassiliki 
Published: February 2015

Abstract
Tetrakis(trimethylsilyl)distibane, (Me3Si)4Sb2 is produced by reaction of tris(trimethylsilyl) stibine, (Me3Si)3Sb, with three or less than three equivalents of t-butyl iodide, with trimethyliodosilane, Me3SiI and iodine. The reaction of (Me3Si)3Sb with three or more equivalents of i-butyl iodide and methyl iodide also yields tri-t-butylstibine, trimethylstibine and Me3SiI
Darstellung und Kristallstruktur von Rb2AgAu3I8, ein Beitrag zur Kristallchemie des einwertigen Silbers und Golds / Preparation and Crystal Structure of Rb2AgAu3ls, a Contribution to the Crystal Chemistry of Monovalent Silver and Gold
Authors: Werner Walther , Strähle Joachim 
Published: February 2015

Abstract
Rb2AgAu3I8 can be prepared in the presence of ether by the reaction of stoichiometric amounts of RbI, AgNO3 and Au with an excess of I2 and concentrated HI. It crystallizes monoclinic in the space group C 2/c. The structure consists of Rb+, Ag+, AuI2- and AuI4 ions. Short distances of 304 pm between the gold(I) atoms can be interpreted by weak bonding interactions. Rb2AgAu3Is shows a very close structural relationship to Rb3Au3Is. The substitution of one third of the Rb+ ions by Ag+ leads only to small changes in the structure, which generate a suitable tetrahedral coordination for the Ag+ ions. The result of the structure determination supports the assumption that the monovalent gold prefers a linear coordination and covalent bonds, whereas silver tends to a more ionic character and higher coordination numbers
Resonance Raman Spectra and Structure of Partially Oxidized Magnus' Salt
Authors: Papavassiliou G. C. , Theophanides T. 
Published: February 2015

Abstract
The partially oxidized form of Magnus' salt has been studied by resonance Raman spectroscopy (RRS) and it has been established that the oxidized form is a chlorine bridged chain polymer. The spectra show intense progressions, υν, where ν, is the symmetric ···X-Pt(IV)-X··· stretching mode, and v the quantum number
Photolysis of Aromatic Ethers
Authors: Benn Reinhard , Dreeskamp Herbert 
Published: February 2015

Abstract
The photolysis of twelve aromatic ethers in solution has been studied by CIDNP and product analysis. The primary step is the scission of the C-O bond in the excited singlet state. The partners of the resulting radical pair (Ph-O' and R1) undergo three major reactions:
(i) geminate recombination and out-of-cage combination resulting in the reformation of the starting material,
(ii) geminate recombination and out-of-cage combination resulting in cyclohexa-2,5- dienones and cyclohexa-2,4-dienones which are isomers of the starting material,
(iii) H-abstraction from the solvent by the more reactive ones of the two radicals (mainly RO") and combination of the less reactive ones {e.g. benzyl) in the bulk solution. The quantum yield of photodecomposition is low for diphenyl ether ( Ø ~ 0.002) but approaches unity (0.3-0.9) in benzyl aryl ethers where the benzyl-oxygen bond is cleaved. If the aroxyl radicals are substituted in ortho (para) position the resulting ortho (para)- disubstituted cyclohexadienones are stable. Otherwise they swiftly rearrange into the phenols. The cyclohexa-2,4-dienones which are the precursors of the ortho-substituted phenols isomerize faster than the cyclohexa-2,5-dienones that give the para-substituted phenols. The rates of these rearrangement reactions are enhanced by acid catalysis
Soluble Polymers for Substitute of Biopolymers in Natural Compounds, I Replacement of the Oligosaccharide Chain in Cinerubin A by Polyoxyethylene
Authors: Geekeler Kurt , Mutter Manfred 
Published: February 2015

Abstract
The glycosidic component of cinerubin A, an anthracycline antibiotic, has been replaced by a polyoxyethylene (POE) chain. The resulting POE-bound e-pyrromycinone was readily soluble in water and exhibited full biological activity