Go toArchive
Browse byFacets
Bookbag ( 0 )
'Complex' in keywords
Results  20 Items
Sorted by   
Publication Year
2000 (1)
1999 (1)
1998 (1)
1996 (1)
1995 (1)
1994 (1)
1993 (1)
1992 (3)
1991 (1)
1980 (1)
1979 (1)
1977 (1)
1976 (1)
1975 (4)
1972 (1)
1Author    Chrystel Hagen, Hanns-D Ieter AmbergerRequires cookie*
 Title    Zur Elektronenstruktur hochsymmetrischer Verbindungen der /-Elemente, XXV.III) Single Crystals for Chemical Syntheses and Physical Investigations  
 Abstract    Züchtung hochreiner Tris[bis(trimethylsilyl)amido]lanthanoid(III)-Einkristalle für chemische Synthesen und physikalische Untersuchungen The Electronic Structure o f Highly Symmetrical Compounds o f the /-Elem ents, XXV. Grow th of U ltrapure Tris[bis(trimethylsilyl)amido]lanthanide(Tris[bis(trimethylsilyl)amido]lanthanide(III 
  Reference    Z. Naturforsch. 48b, 1365—1371 (1993); eingegangen am 17. Juni 1993 
  Published    1993 
  Keywords    ) Complexes, Large Oriented Single Crystals, Optical Spectra, Vibrational Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/48/ZNB-1993-48b-1365.pdf 
 Identifier    ZNB-1993-48b-1365 
 Volume    48 
2Author    K. H. Pannell, L. J. BittmanRequires cookie*
 Title    Note Concerning Restricted Rotation about Metal-Acyl Carbon Bonds  
 Abstract    A recent article by LINDNER et al. reported some interesting data on new alkyl and acyl cobalt tricarbo-nylphosphine complexes, RCo (CO) 3P<Z>3 , R = CHF2, CH2F, CHF2CO, CH2FCO x . Of particular interest were the infrared spectral data of the carbonyl region which indicated the expected pseudo Csv symmetry for all the complexes and in addition reported the ketonic carbonyl band for the monofluoroacyl complex to be a doublet, the relative intensities of whose bands were temperature dependent. Such behavior is typical of the existence of rotational isomers and was explained on this basis, namely restricted rotation about the metal-acyl bond. It was proposed that such restricted rotation stemmed from the double bond character of the linkage due to contribution of the well established limiting structure A to the acyl-metal bond. 
  Reference    (Z. Naturforsch. 27b, 1109—1110 [1972]; received July 17 1972) 
  Published    1972 
  Keywords    Restricted rotation, Acyl-metal, Complexes 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/27/ZNB-1972-27b-1109_n.pdf 
 Identifier    ZNB-1972-27b-1109_n 
 Volume    27 
3Author    C.Requires cookie*
 Title    Die Einwirkung von Bromierungsmitteln auf Cyclopropenone  
 Abstract    yclopropenone C hem istry, V I Conversion of Cyclopropenones w ith B rom inating Agents S ig r id S. D e h m l o w u n d E c k e h a r d V. D e h m l o w Addition The synthesis of m ethyl-phenylcyclopropenone (la) is decribed. Bromination of this and of diphenylcyclopropenone yields saltlike complexes 2 which are in equilibrium with their components. Di-w-propylcyclopropenone and bromine give the ring opened product 3d. l a and N-bromosuccinimid give 4 and 5, phenyl brominated derivatives, in sulfuric acid. W ith cupric bromide substituted /S-bromoacrylic acids are formed along with cyclopropenone dimers (7). 
  Reference    (Z. Naturforsch. 30b, 404—408 [1975]; eingegangen am 26. November 1974) 
  Published    1975 
  Keywords    Complex, Ring Opening, Catalized Dimerization 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0404.pdf 
 Identifier    ZNB-1975-30b-0404 
 Volume    30 
4Author    G. S. Sodhi, J. KaurRequires cookie*
 Title    Thermogravimetric Studies on Bimetallic Dithiocarbamate Complexes+  
 Abstract    Thermogravimetric (TG) studies have been carried out for some bimetallic dithiocarbamate complexes o f the type ZnM L4 and N iM 'L 4 [M = Co(II), Cu(II); M' = Zn(II), Hg(II); L = N-methylcyclohexyldithiocarbamate; L' = N-ethylcyclohexyldithiocarbamate]. From TG curves, the order, apparent activation energy and apparent activation entropy for the thermal decomposition reaction have been calculated. The thermal stabilities have been correlated with the structures o f the complexes on the basis o f hard and soft acid base (H SA B) theory. 
  Reference    Z. Naturforsch. 47b, 1297—1299 (1992); received March 16 1992 
  Published    1992 
  Keywords    Thermogravimetry, Complexes, Activation Energy 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-1297.pdf 
 Identifier    ZNB-1992-47b-1297 
 Volume    47 
5Author    CorneliusG. Kreiter, Wolfgang Michels, Gerhard HeebRequires cookie*
 Title    Photoreaktionen von Dekacarbonyldirhenium mit A llen und unverzweigten Allenderivaten Photoreactions of Decacarbonyldirhenium with Allene and Unbranched Derivatives o f Allene  
 Abstract    Decacarbonyldirhenium (1) reacts upon U V irradiation with allene (2), 1,2-butadiene (3) and 2,3-pentadiene (4) preferentially by CO substitution and oxidative rearrangement to the corresponding enneacarbonyl-//-?/1:3-endiyl-dirhenium complexes 5, 9, and 15 and to the octacarbonyl-,«-//-:2-allene-dirhenium complexes 6, the stereoisomers 10, 11, and 16. A t ele­ vated temperature 5, 9, and 15 loose CO and yield by a reductive rearrangement also the complexes 6, 10, 11, and 16. In addition to these main products, depending upon the allene derivative used, various by-products are obtained. By-products of the reaction o f 1 with 2 are octacarbonyl-M-/73:3-(2,3-dimethylene-buta-l,4-diyl)dirhenium (7) and ^-^^-allene-hexacarbonyl-/!-//1:3-i-propene-l,3-diyl-dirheniurn (8). The photo reaction of 1 with 3 yields, in addition to 9-11 , tetracarbonyl-^3-(£'-5-ethylidene-4-methyl-2-cyclopenten-l-yl)rhenium (12) 
  Reference    Z. Naturforsch. 50b, 649—660 (1995); eingegangen am 28. September 1994 
  Published    1995 
  Keywords    Decacarbonyldirhenium, Photoreaction, Allene, Derivatives, Complexes 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0649.pdf 
 Identifier    ZNB-1995-50b-0649 
 Volume    50 
6Author    Requires cookie*
 Title    Pierre Mermier  
 Abstract    Association The competition dialysis is based on the competition for a ligand between a macromolecule and an excess of another molecule able to form a diffusible complex with this ligand. The procedure used the Colowick's cell and is proposed for determining association constants of complexes which contain tightly bound or labile apoproteins. 
  Reference    (Z. Naturforsch. 30c, 534 [1975]; received May 14 1975) 
  Published    1975 
  Keywords    Constant, Complex, Metalloprotein, Flow Dialysis 
  Similar Items    Find
 TEI-XML for    default:Reihe_C/30/ZNC-1975-30c-0534_n.pdf 
 Identifier    ZNC-1975-30c-0534_n 
 Volume    30 
7Author    Requires cookie*
 Title    Darstellung und spektroskopische Eigenschaften von planaren Dipseudohalogeno-bis(phosphin)-platin(II)-Kom plexen1 Preparation and Spectroscopic Properties of Planar Dipseudohalogeno-bis(phosphine)-platinum(II) Complexes  
 Abstract    P e t e r H. K r e u t z e r , K a r l T. S c h o r p p u n d W o l f g a n g B e c k Diazido-bis(phosphine)-platinum(II 
  Reference    (Z. Naturforsch. 30b, 544—549 [1975]; eingegangen am 13. Mai 1975) 
  Published    1975 
  Keywords    ) Complexes, 14N NMR Spectra, Pseudohalogeno-bis(phosphine) Complexes, 31P NMR Spectra, IR Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0544.pdf 
 Identifier    ZNB-1975-30b-0544 
 Volume    30 
8Author    Juan Murgich, Yosslen Aray, Edgar Ospina, Rico, Ismardo BonaldeRequires cookie*
 Title    N NQR in 1,10-Phenanthroline and Dicyano bis(l,10-phenanthroline)iron(III)  
 Abstract    14 N NQR spectra of 1,10-phenanthroline and of dicyano bis(l,10-phenanthroline)iron(lll) were obtained at room temperature. An analysis based on the shifts of the NQR frequencies and in the topology of the charge distribution in a model (pyridine) showed that the complex formation produces a strong decrease in the N valence shell nonbonded maximum and an increase in the bonded density along each of the N-H bond directions. The NQR spectrum showed that the complex formation produces only small changes in the charge distribution of the cyanide groups. 
  Reference    Z. Naturforsch. 47a, 96—98 (1992); received August 3 1991 
  Published    1992 
  Keywords    14 N NQR, Phenanthroline, Complex, Charge distribution, Topology 
  Similar Items    Find
 TEI-XML for    default:Reihe_A/47/ZNA-1992-47a-0096.pdf 
 Identifier    ZNA-1992-47a-0096 
 Volume    47 
9Author    Juan Murgich, Yosslen Aray, EdgarOspina RicoRequires cookie*
 Title    N NQR and the Molecular Charge Topology in Coordinated Ammonia  
 Abstract    14 N NQR spectra of [Co(NH3)6] • 3C1, [Co(NH3)5C03] • N03, [Zn(NH3)4] • 2C1, [Zn(NH3)4] • (BF4)2, and [Ag(NH3)4] • N03 were obtained at 77 K. The results, analyzed by means of the topology of the charge distribution obtained from ab-initio MO calculations of free and of a model of coordinated NH3, showed that bonding to the metal-ion produces a strong decrease (Co^>Zn %Ag) in the N nonbonded density ("lone pair") and an increase in the bonded maxima found in the N-H bond direction of the N valence shell. 
  Reference    Z. Naturforsch. 47a, 217—220 (1992); received August 3 1991 
  Published    1992 
  Keywords    14 N NQR, Ammonia, Complex, Charge distribution, Topology 
  Similar Items    Find
 TEI-XML for    default:Reihe_A/47/ZNA-1992-47a-0217.pdf 
 Identifier    ZNA-1992-47a-0217 
 Volume    47 
10Author    Ya-Nan Zhao, Sundara Ramaprabhu, EdwinA C LückenRequires cookie*
 Title    An NQR Study of Inclusion Compounds Formed Between Small Chlorine-containing Molecules and Ä/s(N-alkylimidazolidine-2-thione)Cu(I) Halide Complexes  
 Abstract    Twenty-five inclusion complexes formed by fe(N-alkyiimidazolidine-2-thione)cuprous halides with the small, chlorine-containing guest molecules CC1 4 , CHC1 3 , CH 2 C1 2 , CH 3 CC1 3 or C 2 H 2 C1 2 , have been prepared. Their 63 Cu and 35 C1 NQR spectra have been measured over the temperature range 77-300 K. For the corresponding bromides the 79 Br and/or 81 Br spectra have also been investigated. The studies reveal the number and symmetry of different inclusion site. The onset of rapid reorientation of the guest molecules is indicated by the fading out of their NQR signals between 77 and 300 K, whereas the resonances from the host molecules usually persist throughout this temperature range. However, as evidenced by discontinuities in the temperature-dependence of the NQR frequencies of the hosts, sixteen of the complexes show one or more phase-changes in this temperature-range. 
  Reference    Z. Naturforsch. 51a, 677—685 (1996); received December 12 1995 
  Published    1996 
  Keywords    NQR, Copper(I), Guest, Inclusion, Complex 
  Similar Items    Find
 TEI-XML for    default:Reihe_A/51/ZNA-1996-51a-0677.pdf 
 Identifier    ZNA-1996-51a-0677 
 Volume    51 
11Author    J. Pirnat, Z. Trontelj, Z. Jagličić, K. Lutar, H. BorrmannRequires cookie*
 Title    Arsenic NQR in the Paramagnetic Complex Co(AsF 6 ) 2 -2AsF 3  
 Abstract    Arsenic NQR in Co(AsF 6) 2 .2AsF 3 reveals three lines: one near 122 MHz and two near 50 MHz. Relations of the spectral lines to the structure and to thermal vibrations are discussed. Possible influence of paramagnetic Co is examined. 
  Reference    Z. Naturforsch. 55a, 212—214 (2000); received October 13 1999 
  Published    2000 
  Keywords    Co(AsF 6 ) 2, Complex, NQR, Paramagnet, Crystal Structure 
  Similar Items    Find
 TEI-XML for    default:Reihe_A/55/ZNA-2000-55a-0212.pdf 
 Identifier    ZNA-2000-55a-0212 
 Volume    55 
12Author    Requires cookie*
 Title    Reaktionen koordinierter Liganden, V1  
 Abstract    Reaktionen an funktionellen Gruppen von Azido-, Amino-und Hydrazidophosphinkomplexen des Typs cis-Mo(CO)4L2 Reactions of Coordinated Ligands, V 1 Reactions a t Functional Groups of Azido-, Amino-, and Hydrazidophosphine Complexes of the Type a\s-Mo(CO)4L 2 O t h m a r S t e l z e r *, H a n s -B e r n h a r d E i k m e i e r u n d G e r d J o h a n n s e n Azidophosphine The azidophosphine complexes cis-Mo(CO)4 (R2PN3)2 (R = Me, Ph) may be ob­ tained by nucleophilic displacement reactions of chlorine by azide ion in complexes cis-Mo(CO)4 (R2PCl)2-The thermal decomposition and Staudinger reactions were studied. Silylation of NH-or NH2-functional groups in aminophosphine and hydrazinophosphine complexes with MesSiCl, Me2SiCl2 or Me2SiCl-SiClMe2 leads to a series of monodentate or bidentate silylaminophosphine complexes, e.g. (CO)4Mo(R2PNHSiMe3)2, (CO)4Mo-(R2PNH)2SiMe2, (CO)4Mo(R2PNH)2(SiMe2)2, (CO)4Mo[R2PN(SiMe3)(SiMe3)NPR2] or (CO)4Mo[R2P-N(SiMe3)SiMe2-SiMe2-N(SiMe3)PR2]. The structures of these complexes are discussed on the basis of their IR and NMR spectra. 
  Reference    (Z. Naturforsch. 32b, 1449—1454 [1977]; eingegangen am 6. Juli 1977) 
  Published    1977 
  Keywords    Complexes, Staudinger Reaction, Silylation, Aminophosphine Complexes 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/32/ZNB-1977-32b-1449.pdf 
 Identifier    ZNB-1977-32b-1449 
 Volume    32 
13Author    H. Erbert, W. Roesky, Birgit Meller-Rehbein, M. Athias NoltemeyerRequires cookie*
 Title    Reactions of M e2NC(S)SN(SiMe3)2 with M etal Halides -Crystal Structure of M e2NCS2ZrCl3 * 3 Pyridine  
 Abstract    M e-,NC(S)SN(SiM e3)2 (1) reacts with TeCl4 and N bC lj to yield M e2N C (S)SN TeC l2 (4) and 
  Reference    Z. Naturforsch. 46b, 1117—1121 (1991); eingegangen am 14. Februar 1991 
  Published    1991 
  Keywords    Tellurium, Niobium, Zirconium, Hafnium, Complexes, X-Ray 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1117_n.pdf 
 Identifier    ZNB-1991-46b-1117_n 
 Volume    46 
14Author    DavidJ. Brauer, Jörg Fischer, Stefan Kucken, KlausP. Langhans, O. Thm, Ar Stelzer, Norbert WeferlingRequires cookie*
 Title    Wasserlösliche Phosphane, III [1] Wasserlösliche primäre Phosphane mit Ammoniumgruppierungen NR2R' in der Seitenkette -donorfunktionalisierte Amphiphile Water-Soluble Phosphanes, III [1] Water-Soluble Primary Phosphanes with Ammonium Groups NR2R' in the Side Chain -Donor-Functionalized Amphiphiles  
 Abstract    Primary and secondary aminoalkylphosphanes R2N -(C H 2)" ,-P H 2 (R 2 = Me2, «Bu2, C5H 10, C4H 80 , 2-(l-Methyl-2-pyrrolidinyl); m = 2, 3, 6, 10, 11; 1 -6) or [R2N -(C H 2)m]2PH (7, R2 = C5H 10; m = 2) are accessible by aminoalkylation of PH 3 with tö-chloroalkylamines R2N -(C H 2)m-C l in the superbasic medium DM SO/KOH (DM SO = dimethylsulfoxide). By selective N-quaternization of 1, 2, 4 -6 with RT (R ' = Me, C"H2" + 1; n = 6 -8 , 12, 16, 18) in the two-phase system CH2C12/H 20 novel primary phosphanes [R 'R 2N -(C H 2)m-P H 2]+I~ (ll-1 6 f) with quaternary ammonium groups in the alkyl side chain are obtained. The water solubility of l l -1 6 f decreases with increasing chain length (n) of R'. 11 (R = R' = Me; m = 2) shows a trans conformation at the C2H 4 bridge according to an X-ray structural analysis. Protonation of 1, 2, 4, 5 with HC1 affords the water-soluble hydrochlorides [HR2N -(C H 2)" ,-P H 2]+C1~ (19-22). The cationic primary phosphanes l l -1 6 f are stable towards oxygen. By oxidation of 11 with one or two equivalents of H 20 2 the primary phos­ phane oxide [Me3N -(C H 2)2-P (0) H 2]+I~ (23) or the phosphonous acid [Me3N -(C H 2)2-P (0)(0 H)H ]+I~ (23aj are formed. Hofmann degradation of 11 or 16c with KOH yields phosphirane in good yields. Reaction of 1, 2, 4 -6 (L) with Fe2(CO)9 at ambient temperature yields stable complexes (CO)4FeL (26-30). U nder more rigorous conditions Fe3 clusters (31, 32) with free R2N groups are obtained. 
  Reference    Z. Naturforsch. 49b, 1511—1524 (1994); eingegangen am 16. Mai 1994 
  Published    1994 
  Keywords    Aminoalkylphosphanes, Protonation, Water Solubility, Complexes, Clusters 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1511.pdf 
 Identifier    ZNB-1994-49b-1511 
 Volume    49 
15Author    Joachim Heinickea, Attila Dala, Hans-Friedrich Kleinb, Olaf Hetcheb, Ulrich Flörkec, Hans-Jürgen HauptcRequires cookie*
 Title    Formation of r71-P-(2-Phosphinophenol)Ni(0)(PMe3)3 and Oxidation to cjs/fraws-Bis(2-phosphinophenolato)nickel(II) Complexes  
 Abstract    o-Phosphinophenols 1 (P ^ O H) react with equimolar amounts of Ni(PMe3)4 at low tempera­ tures to give yellow Ni(0) complexes such as [(HO~P)Ni(PMe3)3] 2a with only P coordination of the P ^ O H ligand. Oxidation of solutions of 1 and Ni(PMe3)4 by dioxygen leads to brown bis(o-phosphinophenolato-P^O)nickel chelate complexes 3a-d. Structure elucidation by NM R is consistent with a m-square planar geometry for 3a-c and a rrans-square planar solution struc­ ture of the terr-butylphenylphosphino derivative 3d. The geometric isomers were distinguished by different ranges of phosphorus coordination shifts and 3lP-l3C-2 and 3IP-13C-1 coupling 
  Reference    Z. Naturforsch. 54b, 1235—1243 (1999); received May 19 1999 
  Published    1999 
  Keywords    Phosphinophenolate, Nickel, Complexes, Structure Elucidation, Solid State Structures 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1235.pdf 
 Identifier    ZNB-1999-54b-1235 
 Volume    54 
16Author    P. ScoppaRequires cookie*
 Title    Cadmium-Isocitrate Complex: Its Stability as a Function of Ionic Strength  
 Abstract    The complexation of cadmium by isocitrate has been studied at 25 °C and pH 7.5 in a range of ionic strength from 0.01 to 0 j16. The formation constant of the complex between cadmium and tribasic isocitrate varies from 860 M -1 at ^ = 0 .1 6 to approximately 24,500 M -1 at infinite dilu­ tion. These data allow the distribution of the chemical forms of cadmium added to the incubation mixtures for the assay of NAD-dependent isocitrate dehydrogenase to be calculated. 
  Reference    (Z. Naturforsch. 30c, 555 [1975]; received May 2 1975) 
  Published    1975 
  Keywords    Isocitrate Dehydrogenase, Isocitrate, Cadmium, Complexes, Ionic Strength 
  Similar Items    Find
 TEI-XML for    default:Reihe_C/30/ZNC-1975-30c-0555.pdf 
 Identifier    ZNC-1975-30c-0555 
 Volume    30 
17Author    Ingrid Pilz, K. Arin Goral, FriedrichV D HaarRequires cookie*
 Title    Phenylalanyl-tRNA Synthetase from Baker'Yeast: Structural Organization of the Enzyme and Its Complex with tRNAPhe as Determined by X-Ray Small-Angle Scattering  
 Abstract    The quaternary structure of the phenylalanyl-tRNA synthetase and its complex with tRNAPhe was studied in dilute solutions by small angle X-ray scattering. For the free synthetase the radius of gyration was determ ined as 5.5 nm, the volume 523 nm 3, the maximum diam eter 17.5 nm and the m olecular weight as 260 000 using an isopotential specific volume of 0.735. The overall shape could be best approxim ated by a flat cylinder with dimensions 18.2 n m X l l .5 n m X 4 nm ; the loose structure was approxim ated by building up the cylinder by spheres (diam eter 4.2 n m). The corresponding param eters of the enzyme tRN A complex were the following: radius of gyration 5.9 nm, volume 543 nm 3, maximum diam eter 21 nm and m olecular weight 290 000. These param eters suggest an 1:1 complex, whereby it m ust be assumed that the tRN A m olecule is attached in the extension of the longer axis. From the difference in the distance distribution functions of the free enzyme and the complex it is evident that we have to assume a change of conform ation (contraction) of the enzyme upon the binding of the specific tRNA. 
  Reference    Z. Naturforsch. 34c, 20 (1979); received November 20 1978 
  Published    1979 
  Keywords    X-Ray, Small-Angle, Scattering, Enzyme, Complex 
  Similar Items    Find
 TEI-XML for    default:Reihe_C/34/ZNC-1979-34c-0020.pdf 
 Identifier    ZNC-1979-34c-0020 
 Volume    34 
18Author    Jürgen PolsterRequires cookie*
 Title    Ein neues Verfahren zur spektrometrischen Analyse von Metallkomplex-Lösungen A New Method for Spectrometric Analysis of Complex Metal Solutions  
 Abstract    A new simple method is given to analyse potentiometrically titrated and spectrophoto-metrically measured complex-solutions of the system AH ^ A -j-H3Ü+ and n • A + M^MA n . The absorbance coefficients of the metal complex MA n and the stability constants can be determined for each titration step by construction of the "extinction triangle" in the (two-dimensional) absorbance (E) diagram. It is not necessary to know the absolute pH value of the solution. The titration of 2-nitroso-l-naphthol-4-sulfonic acid/zinc sulfate in water is shown as an example. 
  Reference    (Z. Naturforsch. 31b, 1621—1625 [1976]; eingegangen am 15. September 1976) 
  Published    1976 
  Keywords    Spectrophotometry Titrations, Absorbance Diagrams, Complex, Stability Constants, Absorbance Coefficients 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-1621.pdf 
 Identifier    ZNB-1976-31b-1621 
 Volume    31 
19Author    H. S. Sangari, G. S. Sodhi, N. K. Kaushik, R. P. SinghRequires cookie*
 Title    Bis(?? 5 -cyclopentacüenyl)N,N-Disiibstituted Dithiocarbamato(cUoro)oxomolybdeniim(VI) Complexes  
 Abstract    Bis(?j 5 -cyclopentadienyl)N,N-disubstituted Dithiocarbamato(chloro)oxomolybdenum(VI) complexes of the type (C5H5)2MoO(S2CNR2)C1 and (CsHshMoO^CNRR'JCl where R = Me, Et, «'-Pr and R' = cyclohexyl (cyhx) have been prepared by the reaction of stoichio- metric amounts of bis(^5-cyclopentadienyl)oxomolybdenum(VI) dichloride with sodium dichio-thiocarbamates in refluxing dichloromethane. Infrared spectral studies demonstrate that in these complexes, the dithiocarbamate ligands are bidentate. Hence a coordination number of 7 may be assigned to the molybdenum(VI) atom in each case. In addition to infrared studies, electronic spectra, NMR studies, magnetic susceptibility, elemental analyses and conductance measurements have been carried out for these complexes. 
  Reference    Z. Naturforsch. 35b, 1254—1256 (1980); received May 9 1980 
  Published    1980 
  Keywords    Complexes, Electrical Conductance, Magnetic Susceptibility, Electronic Spectra, NMR Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1254.pdf 
 Identifier    ZNB-1980-35b-1254 
 Volume    35 
20Author    Z. NaturforschRequires cookie*
 Title    The Rieske Protein from Purple Sulfur Bacteria Is an Extrinsic Protein  
 Abstract    The mode of membrane attachment of the Rieske iron-sulfur protein from cytochrome be, complex of Rhodospirillum rubrum has been studied using biochemical approaches. In contrast to cytochrome c, the bacterial Rieske protein was extracted from chromato-phores using chaotropic agents (NaSCN, urea, guanidine), an alkaline pH and relatively low concentration of Triton X-100. The results presented here lead to the conclusion, that the Rieske protein from chromato-phores is extrinsic and that their association with the rest of the complex involves hydropho­ bic interactions. In tro d u ctio n 
  Reference    Z. Naturforsch. 53c, 15—20 (1998); received September 30/0ctober 16 1997 
  Published    1998 
  Keywords    Chrom atophor, Cytochrome be, Complex, Rieske Protein, Rhodospirillum rubrum 
  Similar Items    Find
 TEI-XML for    default:Reihe_C/53/ZNC-1998-53c-0015.pdf 
 Identifier    ZNC-1998-53c-0015 
 Volume    53