bluuebunny/crossref_metadata_2025_split huggingface dataset:
Photomineralisierung chlorierter Alkane, Alkene und Aromaten an Kieselgel / Photomineralization of Chlorinated Alkanes, Alkenes and Aromatics on Silica Gel
Authors: Schmitzer J. , Gäb S. , Bahadir M. , Körte F. 
Published: February 2015

Abstract
The photodegradation to CO2 (photomineralization) of chlorinated alkanes, alkenes and aromatics adsorbed on silica gel was examined. In addition to CO2, Cl- and Cl2 were determined. The degradation depends considerably on the activity of the surface and decreases in the order alkenes > alkanes > aromatics.
Beiträge zur Chemie des Silieiums und Germaniums, XXIX [1] 29Si-NMR-spektroskopische Untersuchungen von geradkettigen und verzweigten Silanen / Contributions to the Chemistry of Silicon and Germanium, XXIX [1] 29Si NMR Spectroscopic Investigations on Straight and Branched Silanes
Authors: Hahn Josef 
Published: February 2015

,
The structure of the straight silanes SinH2n+2 (1 ≤ n ≤ 7) and of the branched isomers isotetrasilane, iso- and neopentasilane, 2-silyl- and 3-silylpentasilane, 2,3-disilyltetrasilane as well as 2-silyl- and 3-silylhexasilane could be unambiguously elucidated by 29Si NMR spectroscopy. Systematic trends in the chemical shift and coupling parameters were observed and an empirical relationship between δ(29Si) of a 29Si nucleus and the number of the neighbouring silicon atoms in αβor γposition is given. In 1H decoupled spectra the nuclear Overhauser effect on the 29Si resonance was found to increase with increasing distance of the 29Si nucleus from the end of the chain. A complete analysis of the multi spin systems of disilane, trisilane and isotetrasilane was performed and the signs of the 29Si,H- and H,H-long range coupling constants were determined with regard to the negative sign of 1J(29SiH).
Der Aufbau von Nd2NiO4 und seine Verwandtschaft zu La2NiO4 und La2CuO4 / The Structure of Nd2NiO4 and its Relationship to La2NiO4 and La2CuO4
Authors: Lehmann U. , Buschbaum Hk. Müller- 
Published: February 2015

Abstract
Single crystals of Nd2NiO4 were prepared by plasma and CO2-LASER technique and analysed by X-ray single crystal methods. Nd2NiO4 is the first compound of the orthorhombically dis-torted La2CuO4-type.
Elektrochemische Synthesen, II [1]. Theoretische Aspekte der elektrochemischen Synthese von Komplexen / Electrochemical Syntheses, II [1]. Theoretical Aspects of the Electrochemical Synthesis of Complexes
Authors: Grobe Joseph , Keil Michael , Schneider Bernd , Zimmermann Heinz 
Published: February 2015

Abstract
A theoretical model for the electrochemical synthesis of transition metal complexes in low oxidation states has been developed on the basis of Pearson’s HSAB concept. A MO description is used to discuss the important practical implications of the model.
Elektrochemische Synthesen, III [1] Metallcarbonyle und Phosphan-Derivate der Elemente der Gruppe VI B / Electrochemical Syntheses, III [1] Metal Carbonyls and Phosphane Derivatives of Group VI B Elements
Authors: Grobe Joseph , Zimmermann Heinz 
Published: February 2015

Abstract
The electrochemical synthesis of group VI B metal carbonyls and phosphane derivatives thereof from suitable metal complexes of oxidation state +III (acetylacetonates, chloropyridin compounds) and from metal anodes is described.
Organobleiverbindungen von Mercaptocarbonsäuren / Organolead Compounds of Mercaptocarboxylic Acids
Authors: Hager Claus-Dierk , Huber Friedo 
Published: February 2015

Abstract
Phenyllead Compounds, Methyllead Compounds, Organolead-S-mercaptocarboxylic Acids Triphenyl-and diphenyllead derivatives of mercaptocarboxylic acids (H2Mc) with general formulas Ph3Pb(HMc), (Ph3Pb)2Mc, Ph2Pb(HMc)2 and R2Pb(Mc) (R = Ph, Me) have been prepared by gentle reaction of H2Mc with Ph3PbOH, (Ph2PbO)n or Me2Pb(OH)2 in CHC13. According to spectroscopic data the ligand in all compounds is bound to Pb through S. Ph3Pb(HMc) (HMc = SCH2COOH, SCH2CH2COOH, SCH(CH3)COOH, SCH(COOH)CH2COOH forms dimers in the solid state and in CC14, Ph2Pb(CH2CH2COOH)2 forms polymers via H-bonded COOH groups. Ph3Pb(o-SC6H4COOH) is monomeric. For R2Pb(Mc) polymeric structures are proposed. Me3PbOH and H2Mc react to give an inter-mediate, which disproportionates to give Me2Pb(Mc) (Mc = SCH2COO, SCH2CH2COO) and Me4Pb.
Dicarbonyl-, Carbamoyl-carbonyl-und Carbomethoxo-carbonyl-Komplexe des Rhodiums mit tri-und tetratertiären Phosphinliganden [1] Dicarbonyl-, Carbamoyl-carbonyl-and Carbomethoxo-carbonyl Complexes of Rhodium with Tri-and Tetratertiary Phosphine Ligands [1]
Authors: Behrens Helmut , Ellermann Jochen , Hohenberger Ewald F. 
Published: February 2015

Abstract
The cationic dicarbonyl complexes [Rh(CO)2(R2PCH2)3CRʹ]PF6 (R = C6H5; Rʹ = CH3, -CH2PR2), formed by high pressure synthesis from RhCl3(H2O)3, CO and (R2PCH2)3CRʹ react with liquid ammonia at 20 °C to give the carbamoyl complexes Rh(CO)(CONH2)(R2PCH2)3CRʹ. At 100 °C in liquid ammonia the carbamoyl-carbonyl complexes Rh(CO)(CONH2)(R2PCH2)3CRʹ form the CO-bridged, dinuclear compounds (μ-CO)2[Rh(R2PCH2)3CRʹ]2. Upon treatment of Rh(CO)(CONH2)(R2PCH2)3CRʹ with CH3OH the carbomethoxo carbonyl complexes Rh(CO)(COOCH3)(R2PCH2)3CRʹ are obtained. The new compounds were characterised, as far as possible, by their IR, Raman and 31P NMR spectra.
Reduktone von Tetram-, Tetron- und Thiotetronsäuren/Reductones of Tetramic, Tetronic and Thiotetronic Acids
Authors: Stachel Hans-Dietrich , Poschenrieder Hermann , Burghard Hans 
Published: February 2015

Abstract
The 3-spiro-3ʹ,3ʹ-dimethyl-2ʹ-oxiranes of 5-benzylidene-2,4-dioxo-pyrrolidone, 5-benzyl-idene-2,4-dioxotetrahydrofuranone and 5-benzylidene-2,4-dioxotetrahydrothiophene yield the corresponding heterocyclic reductones (3 a-c) upon treatment with sulfuric acid. The tetramic acid reducton 3a can also be obtained by hydrolysis of the diazoniumsalt 5.
An Electronegativity Scale for RSO2 Groups as Empirically Estimated from the S-Cl Bond Lengths of Sulphonyl Chloride Molecules
Authors: Hargittai Istvan , Bliefert Claus 
Published: February 2015

Abstract
Electronegativities for some RSO2 groups have been estimated from the S-Cl bond lengths of sulfonic acid chlorides by use of the Schomaker- Stevenson equation.
Anwendung der 11B-NMR-Spektroskopie zur Untersuchung von Hydroborierungen, IHydroborierung von 3-Methyl-1.3-butadien mit Boran in Tetrahydrofuran und Dimethylsulfid / Application of 11B NMR Spectroscopy to the Study of Hydroboration, I Hydroboration of 3-Methyl-1,3-butadiene with Borane in Tetrahydrofurane and Dimethyl Sulfide
Authors: Contreras Rosalinda , Wrackmeyer Bernd 
Published: February 2015

Abstract
The intermediacy of 3-methyl-1-boracyclopentane in the hydroboration of 3-methyl-1,3-butadiene with borane in tetrahydrofurane (BH3-THF) and dimethyl sulfide (BH3-DMS) has been established by means of 11B NMR spectroscopy. The reaction proceeds through the trialkylborane stage (3:2 products) and the latter undergo exchange reactions with boron hydrogen compounds present. This has been proved independently by studying the 11B NMR spectra of the mixtures between the 3:2 products and BH3-THF and BH3-DMS, respectively. Evidence is provided that opening of the boracyclopentane ring in exchange reactions is accompanied by exocyclic exchange. These results are further confirmed by the 11B NMR spectra of the mixtures between 1-phenyl-3-methyl-1-boracyclopentane and BH3-THF and BH3-DMS, respectively. 11B NMR spectra of the 3:2 products dissolved in DMS allow evaluation of the isomer distribution.
Compounds of Complex Halo and Pseudohalo Acids of the Group II B Metals, Part II [1]Etherate and Aniline Compunds of Cd(II)
Authors: Perlepes S. P. , Zafiropoulos Th. F. , Kouinis J. K. , Galinos A. G. 
Published: February 2015

Abstract
The preparation of new etherate and aniline compounds of the mixed complex halo-acids HCdCl2I and H2CdI2Cl2 is reported.
Analytical, conductometric, spectral (UV and IR) and data from X-ray powder spectra were used for the characterization of the complexes. The structure of the aniline complexes, in the solid state, cannot be deduced with certainty.
Die Zweikernkomplexe Cp2Mn2(CO)4S2 und Cp2Mn2(CO)4Se2
+ / The Binuclear Complexes Cp2Mn2(CO)4S2 and Cp2Mn2(CO)4Se2
Authors: Herberhold Max , Reiner Dietmar , Zimmer-Gasser Beate , Schubert Ulrich 
Published: February 2015

Abstract
The reactions of cyclopentadienyl dicarbonyl tetrahydrofuran manganese, CpMn(CO)2(OC4H8), with either COS or COSe lead preferentially to binuclear complexes, Cp2Mn2(CO)4S2 and Cp2Mn2(CO)4Se2, respectively. According to an X-ray crystallographic study, the sulfur complex is a centrosymmetric molecule containing a planar Mn-(S-S*)-Mn* unit with d(Mn-S) 216.7(4) pm, d(S-S*) 200.7(6) pm and < MnSS* 114.4(2)°.
Gold Complexes of a P-Coordinate Cyclotriphosphazene [1,2]
Authors: Dash K. C. , Schmidpeter A. , Schmidbaur H. 
Published: February 2015

Abstract
Contrary to the reports on the coordination oi copper (I) to N/P-ambidentate cyclotri-phosphazenes, gold (I), gold (III) and dimethylgoldf 111) chloride are found to become exclusively P-coordinated to the prototype ligand 2-methyl-4,4,6,6-tetraphenylcyclotri-phosphazene (1). The P-H proton is transferred to an adjacent nitrogen atom of the heterocycle. According to temperature dependent NMR spectra, the AuCl and the AuCl3 complexes are fluxional molecules or ions, resp., with a rapid proton transfer between P-NH-P and P = N-P functions. The behaviour is similar to that of related palladium and platinum complexes, reported previously.
Bis (η2-olefin) tetracarbonylwolfram- und -molybdän-Komplexe: photochemische Synthese, Struktur und dynamisches Verhalten / Bin (η2-olefin)tetracarbonyltungsten and -molybdenum Complexes: Photochemical Synthesis, Structure and Fluxional Behaviour
Authors: Grevels Friedrich-Wilhelm , Lindemami Marion , Benn Reinhard , Goddard Richard , Krüger Carl 
Published: February 2015

Abstract
Extended photolysis of M(CO)6 (M = W, Mo) and methyl acrylate or dimethyl fumarate results in formation of (η2 -olefin)2M(CO)4 via the less stable (η2 -olefin)M(CO)5 complexes. X-ray structure analysis of (η2-methyl acrylate)2W(CO)4 reveals the trans-staggered arrangement of the olefinic ligands. Rotational barriers are determined by variable temperature NMR spectroscopy.
Synthesis of Hexahydroindazole, Tetrahydro-[pyrimidoquinazolinone, benzodiisoxazolone] Derivatives and Anils from Diethyl 1,4-Cyclohexanedione-2,5-dicarboxylate
Authors: Afsah El-Sayed , Amer Fathy A. , Metwally Mohamed A. , El-Zimaity Mohamed T. 
Published: February 2015

Abstract
Treatment of diethyl 1,4-cyclohexanedione-2,5-dicarboxylate (1) with hydrazine hydrate in glacial acetic acid afforded the diazobicycloocatdienedicarboxylate (2) and the azine (3). On the other hand, condensation of 1 with benzenesulphonylhydrazide in ethanolic solution gave the indazole derivative (4). Interaction of 1 with urea or hydroxyl-amine afforded the tetrahydropyrimidoquinazolinone (5) and the tetrahydrobenzodi-isoxazolone (6), respectively. Treatment of 1 with aniline gave the mono-anil (7) which, when subjected to Japp-Klingemann reaction with p-anisidine gave the dihydrazonoanil (8) and their condensation with benzidine in acetic acid gave the hydrazonoketoester (9). On the other hand condensation of 7 with hydrazine hydrate in ethanolic solution afforded the azobis (5-anilinoterephthalate) (10) and the hexahydrobenzodipyrazolone (11).
1-und 2-Methylallylkationen aus isomeren Vinylbromidradikalkationen / 1-and 2-Methylallyl Cations from Cation Radicals of Isomeric Vinyl Bromides
Authors: Schwarz Helmut , Wesdemiotis Chrysostomos 
Published: February 2015

Abstract
It is demonstrated by collisional activation mass spectrometry that dissociative ionization of E-and Z-1-bromobutene-1 (3, 4), 2-bromo-butene-1 (5) and 2-bromobutene-2 (6) yields exclusively 1-methylallyl cation (a). Unimolecular Br -loss from the molecular ion of 1-bromo-2-methylpropene (7) gives rise to the specific formation of the isomeric 2-methylallyl cation (b). Kinetic energy release measurements sup-port the interpretation that Br' loss from the cation radicals 3-7 is preceded (or accompanied) by an exothermic isomerization of the incipient C4H7
+ ions.
Crystal and Molecular Structure of 1,11-bis(Tropolone)-3,6,9-trioxaundecane · RbI
Authors: Chacko K. K. , Saenger W. 
Published: February 2015

Abstract
The complex between the polyether ligand 1,11-bis(tropolone)-3,6,9-trioxaundecane and RbI crystallizes in space group P21/c with cell dimensions a = 11.383(4), b = 14.493(5), c = 16.122(6) Å and β = 111.02(5)° with Z = 4. The structure was solved on the basis of 3734 X-ray reflections measured on a diffractometer with CuKα-radiation and refined to an R of 0.101. The polyether wraps around the Rb+ in a circular structure. One of the tropolone rings is elevated in order to avoid collision. Rb+ is located 1.224(6) Å above the plane formed by five oxygen atoms of the ligand, it is coordinated to I -(3.666(2)Å) and to all oxygens. The Rb+ ··· O distances of the least electronegative “ester oxygens”, 3.14(1) Å and 3.18(1) Å are significantly longer compared to the other Rb+···O distances in the range 2.81(1) Å to 3.08(1) Å. The conformation about the C-C and C-O bonds of the ligand are gauche and trans as generally found in such molecules. The two tropolone seven-membered rings are slightly non-planar and display an envelope-type structure.
Mössbauer Spectroscopic Studies of Monosubstituted Pentacyano Ferrate(II) Complexes, Na3[Fe(CN)5RNH2] · nH2O
Authors: Garg A. N. , Shukla P. N. 
Published: February 2015

Abstract
A series of compounds Na3[Fe(CN)5RNH2] · nH2O where R = -H, -CH3, -C2H5, n-C3H7, n-C4H9 and -CH2C6H5 and RNH2 = C5H5N have been studied by Mössbauer spectroscopy. Quadrupole splitting (⊿EQ) values vary in a limited range (0.68-0.80 mm/sec) indicating only small distortions in the octahedral geometry of the compounds with the substitution of various amino groups. Isomer shift (δ) values remain almost constant suggesting that s-electron density is not affected by substitution.
Übergangsmetallkomplexe von Diazenen, XVI [1] Struktur und Mößbauerdaten von (2.3-Diazanorbornen)Fe3(CO)9 / Transition Metal Complexes of Diazenes, XVI [1] Structure and Mössbauer Data of (2,3-Diazanorbornene)Fe3(CO)9
Authors: Kisch H. , Krüger C. , Trautwein A. 
Published: February 2015

Abstract
The molecular structure of (2,3-diazanorbornene)Fe3(CO)9 consists of a triangular Fe3(CO)9 group bound to the diazene unit. The seven-coordinated Fe(CO)3 group forms two Fe-N bonds with lengths of 1.974 and 1.965 Å, each of the two six-coordinated Fe(CO)3 groups has slightly shorter Fe-N-bonds of 1.898 and 1.903 Å. One Fe-Fe distance, 2.612Å, is longer than the two other ones, 2.572 and 2.582 Å, which are in the range of typical single bonds. The presence of seven-and six-coordinated iron carbonyl groups is also demonstrated by the Mössbauer spectrum showing signals with quadrupole splittings of 1.23 and 0.78, 0.62 ± 0.01 mm/s, respectively.
Kinetische Untersuchung der Methanolyse von chlormethylierten Phenolen / Kinetic Studies of the Methanolysis Reaction of Chloromethylated Phenols
Authors: Steina Günter , Böhmer Volker , Lötz Werner , Kämmerer Hermann 
Published: February 2015

Abstract
The solvolysis of 25 differently substituted chloromethylated phenols was studied kinetically in methanol at 25 °C. A sharp decrease of the initial reaction rate with in-creasing concentrations of added acids can be explained by a very fast solvolysis of the phenolate anions in comparison with the undissociated compounds. The latter show strictly first order kinetics up to high conversions and the rate constants can be partly correlated with the Jaffé relation. Highly negative values for the reaction constants q = -5.4 and q = -6.2 for ortho-and para-chloromethylated compounds show, that the undissociated phenols react according to the SNl -mechanism. However, deviations are found for compounds with strongly electron attracting substituents, which may be partly caused by an intramolecular catalytic effect of the phenolic hydroxy group in the case of the ortho-isomers.
On the Rare-Earth Pnigochalcogenides LnAsSe
Authors: Schmelczer R. , Schwarzenbach D. , Hulliger F. 
Published: February 2015

Abstract
The structures of GdAsSe and NdAsSe were determined from single crystal data. GdAsSe crystallizes in the monoclinic CeAsS-type structure. The deviations from the parent tetragonal ZrSiS-type structure are smaller than in the corresponding sulphides. The As-As distances in the infinite arsenic chains appear to be too large to warrant non-metallic properties. The structure of NdAsSe is isopuntal with the CeAsS-type; however, only As pairs can be identified. The CeAsS-type structure was also found in the LnAsSe compounds with Ln = Pr, Sm, Tb, . . ., Tm, Lu, Y. The distortions of the ZrSiS-type substructure become more pronounced on going to smaller cations. The stoichiometry of the samples depends strongly upon the preparation.
Cyclic Boron Derivatives of Biurets [1]
Authors: Bielawski Jacek , Niedenzu Kurt , Weber Annelore , Weber Wilhelm 
Published: February 2015

Abstract
Several 1,3,5-triaza-2-boracyclohexa-4,6-diones have been prepared by condensation reactions of boranes with biurets; N-methylated species could be characterized by their 1H, 11B and 13C NMR spectra. Some data are also reported on bicyclic bis(N,N',N"- trimethylbiuret-1,5-diyl)borate(l-) salts and on a betaine consisting of two N,N',N"-trimethylbiuret moieties bonded to a central four-coordinate boron atom.
A Novel Isomerization of an Electron-Rich Alkene
Authors: Weinberg Erica L. , Burton J. Thomas , Baird Michael C. , Herberhold Max 
Published: February 2015

Abstract
Displacement of 2-methvlpropene from [Fp(Me2C = CH2)]BF4 (Fp = (η5-C5H5)Fe(CO)2) by Z-1,2-dimethoxyethylene (Z-DME) gives [Fp(Z-DME)]BF4. Displacement by E-1,2-dimethoxyethylene (E-DME), in contrast, does not give the expected complex of E-DME, but rather the complex of the Z-alkene. A mechanism involving scission of the C = C bond of the coordinated alkene to give a bis-carbene intermediate is proposed.
The Structures of S4N⊖, S3N2O2 and S4N3⊖
Authors: Gleiter Rolf , Bartetzko Richard 
Published: February 2015

Abstract
Part of the potential surface of S4N⊖ has been investigated using the MNDO method. It is found that the cis-trans isomer 1b is more stable by 20-30 kJ/mol than the trans-trans isomer (1 c) and the cis-cis isomer (1 a). The stability of 1 b is traced back to stabilization of the HOMO and to a Coulomb attraction. For S3N2O2 (2) the MNDO calculations favour those isomers (2a and 2b) with two sickle-like arrangements for the same reasons. For S4N3 e (3) only one isomer (3a) is favoured due to the stabilization of the HOMO. The similarity in the transannular interaction present in 1-3 and that in trithiapentalenes and related compounds is pointed out. The PE spectrum of 2 has been reinvestigated. The first five bands can be interpreted by comparison between the measured ionization potentials and the calculated (MNDO) orbital energies.
Zur Reaktion von (η3-Allyl)- (η5-cyclopentadienyl)palladium mit 2,3-Bis(diphenylphosphino)- maleinsäureanhydrid / Reaction of (η3-Altyl)(η5-cyclopentadienyl) Palladium with 2.3 - Bis (dipheny lphosphino) maleic Anhydride
Authors: Fenske D. , Christidis A. 
Published: February 2015

Abstract
(η3 -Allyl) (η5 -cyclopentadienyl) palladium reacts with bis(diphenylphosphino)maleic an-hydride to form a complex in which the C5H5 ligand is inserted into a P-C bond of the phos-phine ligand. The high yield (>95%) suggests that this reaction takes place within the co-ordination sphere of palladium. The structure is studied by x-ray crystal structure analysis.
Frontorbitale und 1.2-Hydridwanderungen in Carbeniumionen/ Frontier Orbitals and 1,2-Hydrogen Shifts in Carbenium Ions
Authors: Frenking Gernot , Schwarz Helmut 
Published: February 2015

Abstract
For various carbenium ions it is shown that the energy value and the degree of localization of the LUMO have a significant influence on the energy barriers of 1,2-hydrogen shifts. The structures of the transition states are in line with the Hammond-Postulate.
Struktur- und Phasenübergangsuntersuchungen an β-Li2ZnGe/ Structure and Phase Transition Investigations on β-Li2ZnGe
Authors: Cullmann Hans-Otto , Hinterkeuser Heinz-Walter , Schuster Hans-Uwe 
Published: February 2015

Abstract
The ternary compound β-Li2ZnGe was prepared and its structure determined from powder and single crystal data. The compound crystallizes in a modified Na3As type structure, space group Ṗ̇̇̇̇̇̇̇̇̇̇̇̇̇̇3̄
m 1 - D3
3d.The cell parameters are: a = 432.6 pm, c = 1647.0 pm, c/a= 3.83.
A phase transition between a-and β-Li2ZnGe was found and the reaction of the elements lithium, zinc and germanium to a-Li2ZnGe was followed by differential thermal analysis. The temperatures and the enthalpies of transition and fusion were determined.
Eine einfache Darstellung von Khaplofolin, Dihydroflindersin und verwandten Alkaloiden [1] / Synthesis of Khaplofoline, Dihydroflindersine and Related Alkaloids [1]
Authors: Reisch J. , Müller M. , Mester I. 
Published: February 2015

Abstract
A simple synthesis of khaplofoline (lb) and dihydroflindersine (4) has been reported. PTC-prenylation of 4-hydroxy-2-quinolone (8 a) gave a mixture of C-, O-and C/O-prenylated compounds (2a, 8b, 8c, 3d, 3e and 8f), 2a being the major product. N-prenylation of 8h gave 3i which yielded 8k after following treatment with aqueous HCl. Acid catalysed cyclisation of 2 a gave a mixture of 4 and 1 b in a ratio of 3:1.
Crystal and Molecular Structure of 4-Oxo-6-iodoqwnolinium(OIQn)-2,2'- (2,5-cyclohexadiene-1,4-diylidene)- bispropanedinitrile (TCNQ)
Authors: Keller H. J. , Steiger W. , Werner M. 
Published: February 2015

Abstract
One-dimensional Conductors, Linear Chain Structures (C9H7INO · C12H4N4) triclinic PT, a = 7.161(5) Å, b = 8.639(5) Å, c = 17.392(6) Å, α -64.96(4)°, β = 80.64(3)°, γ = 76.99(3)°, V = 1075.6 Å3 , Z = 2, dc = 1.47 Mgm-3. The structure was refined to R - 0.114 for 2022 reflections. It consists of segregated diadic stacks of TCNQ and 4-oxo-iodoquinolinium ions. Inter-planar distances in the TCNQ stack are 3.09(1) Å and 3.32(1) Å; 3.37(1) Å and 3.55(1) Å in the quinolinium stack.
Metallkomplexe mit Hexamethylentetramin als Ligand: Kristallstruktur des Cadmiumiodid-Addukts 3Cdl2 • 2 C6H12N4 • 4 H2O / Metal Complexes with Hexamethylenetetramine as Ligand: Crystal Structure of the Cadmium Iodide Adduct 3CdI2 • 2C6H12N4 • 4 H2O
Authors: Pickardt Joachim 
Published: February 2015

Abstract
The reaction of aqueous solutions of cadmium iodide and hexamethylenetetramine yields crystals of an adduct 3CdI2 • 2CeH12N4 • 4H2O. The crystals are monoclinic, space group P 21/n, Z = 2, a = 811.5(2), b = 1049.2(4), c = 1849.5(6) pm, β = 97.73(2)°. The adduct is polymeric and may be regarded as built up from groups of two tetrahedrally and one octahedrally coordinated Cd(II) ions in which the tetrahedra and the octahedron are sharing common iodine atoms at the corners; neighbourirg Cd3 units are interlinked by hexamethylenetetramine molecules.
Eine einfache und ergiebige Synthese für Bis(trimethylsilyl)- und Bis(trimethylgermyl)quecksilber / A Simple and High Yielding Synthesis for Bis(trimethylsilyl)- and Bis(trimethylgermyl)mercury
Authors: Rösch Lutz , Altnau Gerald , Hahn Ekkehard , Havemann Hans 
Published: February 2015

Abstract
Bis (trimethylsily 1)mercury, Bis(trimethylgermy 1)mercury, Lithium-tris(trimethylsilyl)mercurate
Reactions of 3,4-Dichloro-l,2,5-thiadiazol / Reactions of 3,4-Dichloro-l,2,5-thiadiazol
Authors: Roesky Herbert W. , Wehner Erwin 
Published: February 2015

Abstract
SN2C2Cl2 prepared from (CN)2 and S2CI2 reacts with BCI3, SbCl5 and SO3 to yield the 1:1 adducts, TiCU forms an 1:2 adduct. The adducts were characterized on the basis of IR and Raman spectra. SN2C2Cl2 is alkylated with (C2H5)3O+BF4- at one of the nitrogen atoms. The results are compared with adducts of S2N2CO with Lewis acids