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61Author    Marion Lindemami, Reinhard Benn, Richard Goddard, Carl KrügerRequires cookie*
 Title    Friedrich-Wilhelm Grevels  
 Abstract    Extended photolysis of M(CO)ö (M = W, Mo) and methyl acrylate or dimethyl fumarate results in formation of (^ 2 -olefin)2M(CO)4 via the less stable (^ 2 -olefin)M(CO)5 complexes. X-ray structure analysis of (^-methyl acrylate)2W(CO)4 reveals the trans-staggered arrangement of the olefinic ligands. Rotational barriers are determined by variable temperature NMR spectroscopy. 
  Reference    Z. Naturforsch. 35b, 1298—1309 (1980); eingegangen am 2. Mai 1980 
  Published    1980 
  Keywords    Carbonyltungsten Olefin Complexes, Photochemistry, NMR Spectra, Fluxional Behaviour, X-ray 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1298.pdf 
 Identifier    ZNB-1980-35b-1298 
 Volume    35 
62Author    R. B. Materikova, V. N. Babin, S. P. Solodovnikov, I. R. Lyatifov, P. V. Petrovsky, E. I. FedinRequires cookie*
 Title    Salts of Ferricinium Cation and its Homologues: NMR Investigation, II EPR and NMR Spectra of sym-Polymethyl Substituted Ferricinium Cations  
 Abstract    The EPR, iH and 13 C NMR spectra of methylferricinium hexafluorophosphates, [(MenCp)2Fe]PFö, n — 0-5, have been recorded. HFS constants have been estimated for all the ligand atoms. The general pattern of the spin density distribution is shown to depend on the superposition of the various mechanisms of spin derealization. For the majority of the cations the determining factors has been found to be represented by spin polarization over the jr-skeleton. 
  Reference    Z. Naturforsch. 35b, 1415—1419 (1980); received June 2 1980 
  Published    1980 
  Keywords    Ferricinium, sym-Polymethylferricinium, Spin Derealization, NMR Spectra, ERR Spectra 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1415.pdf 
 Identifier    ZNB-1980-35b-1415 
 Volume    35 
63Author    Ekkehard Lindner, JuanCarlos WuhrmannRequires cookie*
 Title    Synthese und Stabilisierung von (Benzoyl-und Pentafluorbenzoyloxy)diphenyIphosphan und Vergleich mit den entsprechenden isomeren Aroyldiphenylphosphanoxiden Synthesis and Stabilization of (Benzoyl-and Pentafluorobenzoyloxy)diphenylphosphane and Comparison with the Corresponding Isomeric Aroyldiphenylphosphane Oxides  
 Abstract    (Benzoyloxy)-and (pentafluorobenzoyloxy)diphenylphosphanes RC(0)0PPh2 (2a, b) [R = C6H5 (a), C6F5 (b)] can be obtained by reaction of ClPPh2 (1) with Na02CC6H5 and Ag02CCeF5, respectively [eq. (1)]. Oxidation of 2a with molecular oxygen yields (benzoyl-oxy)diphenylphosphane oxide (3a) [eq. (2)]. The complexes (0C)5CrPPh20C(0)R (oa, b) are formed by the action of Na2OCC6Hs and Ag02CC6Fs, respectively on (OC)5CrPPh2Cl (4) [eq. (3)]. The chemical and spectroscopical properties of the (aroyloxy)diphenylphosphanes (2 a, b) are compared with the corresponding aryldiphenylphosphane oxides. 
  Reference    Z. Naturforsch. 36b, 297—300 (1981); eingegangen am 28. November 1980 
  Published    1981 
  Keywords    (Pentafluoro)(benzoyloxy)diphenylphosphanes, Pentacarbonylchromium Complexes, IR Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0297.pdf 
 Identifier    ZNB-1981-36b-0297 
 Volume    36 
64Author    OttoJ. Scherer, Herbert ConradRequires cookie*
 Title    New Phospha(III)azenes  
 Abstract    The interaction of RR'N-PC12 (1) with LiNR"SiMe3 gives monomeric phospha(IH)-azenes RR'N-P=N-R"; R = R"=i-C3H7, R'= (CH3)3C (3a); R=;-C3H7,R'=R" = (CH3)3C (3b); R = i-C3H7, R' = (CH3)3C, R"=(CH3)3Si (3 c) as distillable liquids. 3 a adds PC13 with formation of RR'N-PC1-NR-PC12, R = i-C3H7, R'=(CH3)3C (6). 
  Reference    Z. Naturforsch. 36b, 515—517 (1981); eingegangen am 5. Februar 1981 
  Published    1981 
  Keywords    Phospha(III)azenes, NMR Spectra, PCI3 -Addition, Amino -halo -phosphines 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0515_n.pdf 
 Identifier    ZNB-1981-36b-0515_n 
 Volume    36 
65Author    Herbert Schumann, Heinrich NeumannRequires cookie*
 Title    Organometallphosphin-substituierte Übergangsmetallkomplexe, XXVII [1] Reaktionen von Pentacarbonylmangan-und Pentacarbonylrheniumbromid mit Organoelement(rVb)phosphinen Organometalphosphine-Substituted Transition Metal Complexes, XXVII [1] Reactions of Pentacarbonylmanganese-and Pentacarbonylrheniumbromide with Organoelement(IVb) Phosphines  
 Abstract    The reactions of pentacarbonyl manganese bromide and pentacarbonyl rhenium bromide with di(ter£-butyl)trimethylsilyl phosphine, teri-butyl-bis(trimethylsilyl)-, -(germyl)-, -(stannyl) phosphine, as well as with tris(trimethylsilyl)-, -(germyl)-, and -(stannyl) phosphine result in the elimination of one CO ligand and the formation either of corresponding bromo-tetracarbonyl(organometalphosphine)manganese or -rhenium complexes or of corresponding octacarbonyl-bis(/z-organometalphosphido)dimanganese or -dirhenium complexes. The IR, NMR, and Mössbauer spectra are reported and discussed. 
  Reference    Z. Naturforsch. 36b, 708—712 (1981); eingegangen am 27. Februar 1981 
  Published    1981 
  Keywords    Organometal Phosphines, Tetracarbonylmanganese Complexes, Tetracarbonylrhenium Complexes, NMR Spectra, Mössbauer Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0708.pdf 
 Identifier    ZNB-1981-36b-0708 
 Volume    36 
66Author    Ekkehard FluckRequires cookie*
 Title    Rüdiger Thamm  
 Abstract    Primary phosphanes, RPH2, react with carbonic ester chlorides, C1COOR', in the presence of K 2 C0 3 to yield the title compounds RPHCOOR' and RP(COOR') 2 . The NMR data of the novel compounds are presented and discussed. Other physical and some chemical properties are described. 
  Reference    Z. Naturforsch. 36b, 910—916 (1981); eingegangen am 11. Mai 1981 
  Published    1981 
  Keywords    Carbonic Ester Phosphides, Mass Spectra, IR Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0910.pdf 
 Identifier    ZNB-1981-36b-0910 
 Volume    36 
67Author    DevinderK. Anand, MichaelK. Hargreaves, MohsinA. KhanRequires cookie*
 Title    Conformational Studies of R-(-f)-2-Alkylidene-and R-(—)-2-Benzylidene-5-methylcyclohexanones  
 Abstract    The eis and trans 2-alkylidene-5-methylcyclohexanones have been separated and distinguished. 2-Benzylidene-5-methylcyclohexanone was also prepared in both forms. The CD, ORD, UV and IR spectra are recorded and discussed. The NMR data include solvent and temperature effects. 
  Reference    Z. Naturforsch. 36b, 978—988 (1981); received December 1 1980/April 8 1981 
  Published    1981 
  Keywords    2-Alkyl/arylidene-5-methylcyclohexanones, CD Spectra, ORD Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0978.pdf 
 Identifier    ZNB-1981-36b-0978 
 Volume    36 
68Author    Herbert Meier, Johannes Zountsas, Oswald ZimmerRequires cookie*
 Title      
 Abstract    A X H and 13 C NMR spectroscopical study is performed on the basis of 37 1,2,3-selena-diazoles. Besides the discussion of chemical shifts and coupling constants of X H and 13 C, selenium satellites were measured providing 1 H 77 Se and 13 C 77 Se coupling constants. 
  Reference    Z. Naturforsch. 36b, 1017—1022 (1981); eingegangen am 16. April 1981 
  Published    1981 
  Keywords    NMR Spectra, 1, 2, 3-Selenadiazoles, 77 Se Coupling 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1017.pdf 
 Identifier    ZNB-1981-36b-1017 
 Volume    36 
69Author    Ekkehard Lindner, Claus-Peter Krieg, Sigurd Hoehne, Axel RauRequires cookie*
 Title    Darstellung und Eigenschaften von und Reaktionen mit metallhaltigen Heterocyclen, XXTTT [1] Untersuchungen zur P=S-heteroanalogen Cyclocotrimerisierung von Alkinen mit Nitrilen bzw. Isocyaniden Preparation and Properties of, and Reactions with, Metal-Containing Heterocycles, XXIII [1] Investigations on P=S-Heteroanalogous Cyclocotrimerization of Alkynes with Nitriles and Isocyanides, Respectively  
 Abstract    Structure of [(OC)4MnSP(CH 3)2]2, The dimanganadiphosphadithiacyclohexadiene [(OC)4MnSP(CH 3)2]2 (1) crystallizes in the H,C CH, \ / 3 / P =\ (OC).Mn Mn(CO), * \ / S=P /\ HjC CHj 1 /-PC CH * (OC)tMn I CH, * L Y\ CH, (OCULMn | CHj . CO \ ^ C" \R' L \ t-Bu C6H" C6H5 R'NC a b c PR'3 d R = C02CHJ 3a-d orthorhombic space group Pbca with Z = 4. Attempts to cyclotrimerize the intermediate 
  Reference    Z. Naturforsch. 36b, 1487—1492 (1981); eingegangen am 28. Juli 1981 
  Published    1981 
  Keywords    Isocyanide Complexes of Heteromanganacyclopentadienes, Mass Spectra, IR Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1487.pdf 
 Identifier    ZNB-1981-36b-1487 
 Volume    36 
70Author    Lutz Dahlenburg, Fazlollah Mirzaei, Ah YardimciogluRequires cookie*
 Title    Alkyl-und Arylkomplexe des Iridiums und Rhodiums  
 Abstract    , IX [1] Organorhodiumverbindungen Rh(R)(CO)(PPh3)2 (R = Alkyl, Aryl) und homologe Iridiumalkyle Alkyl and Aryl Complexes of Iridium and Rhodium, IX [1] Organorhodium Compounds Rh(R)(CO)(PPh3)2 (R = Alkyl, Aryl) and Related Iridium Alkyls A series of organorhodium and -iridium complexes M(R)(CO)(PPh 3)2 (M = Rh: R = CeHs, 2-MeC6H4, 4-MeC6H4, 2,4,6-Me3C6H2, CH3, CH2SiMe3, CH2CMe3; M = Ir: R = CH3, CH2Ph, CH2SiMe3, CH2CMe3) has been prepared from MCl(CO)(PPh3)2 and the correspond-ing organolithium or Grignard reagents. Of these compounds, the mesitylrhodium complex Rh(2,4,6-Me3C6H2)(CO)(PPh3)2 as well as the iridium and rhodium alkyls with Me3SiCH2 and Me3CCH2 ligands show cis,irans-isomerism which is demonstrated on the basis of infrared and NMR spectroscopic evidence. 
  Reference    Z. Naturforsch. 37b, 310—317 (1982); eingegangen am 23. Oktober 1981 
  Published    1982 
  Keywords    Rhodium, Iridium, Organometallic Compounds, eis, frarw-Isomerism, NMR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0310.pdf 
 Identifier    ZNB-1982-37b-0310 
 Volume    37 
71Author    Ekkehard Lindner, Michael SteinRequires cookie*
 Title    Darstellung, Eigenschaften und Reaktivität von 2-, 3-und 4-Chloracyl(diphenyl)phosphanoxiden Preparation, Properties and Reactivity of 2-, 3-and 4-Chloroacyl(diphenyl)phosphane Oxides  
  Reference    Z. Naturforsch. 37b, 407—411 (1982); eingegangen am 26. November 1981 
  Published    1982 
  Keywords    Chloroacyl(diphenyl)phosphanes, Diphosphorylated Alcohols, MS, IR Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0407.pdf 
 Identifier    ZNB-1982-37b-0407 
 Volume    37 
72Author    I. Kostova, I. OgnyanovRequires cookie*
 Title    Preparation and Stereochemistry of 12a-Hydroxymethyl Derivatives of Rotenone and Amorphigenin  
 Abstract    A convenient method for the preparation of 12a-hydroxymethyl derivatives of rotenone 1 and amorphigenin 2, possibly applicable to other rotenoids with activated 12a-hydrogen atom is described. The stereochemistry of the products is discussed. 
  Reference    Z. Naturforsch. 38b, 761—763 (1983); received October 8 1982/February 14 1983 
  Published    1983 
  Keywords    12a-Hydroxymethyl Rotenoids, Rotenone, Amorphigenin, Absolute Stereochemistry, NMR Spectra 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0761.pdf 
 Identifier    ZNB-1983-38b-0761 
 Volume    38 
73Author    Umlagerung Synthese, Eigenschaften Diphenylphosphinosubstituierter Uracile, Jochen Ellermann, AlfonsA M DemuthRequires cookie*
 Title    Chemie polyfunktioneller Moleküle, 74 [1] [1] Synthesis, Rearrangement and Properties of Diphenylphosphino Substituted Uracils  
 Abstract    5-Bromo-uracil (2) with chloro-diphenylphosphine and triethylamine gives 5-bromo-N(1),N(3)-bis(diphenylphosphino)-uracil (3). In moist acetone, 3 is hydrolyzed to 5-bromo-N(l)-diphenylphosphino-uracil (4). 3 reacts with n-butyllithium under rearrangement and, with HCl, under elimination of a PPh2-group, forms C(5)-diphenylphosphino-uracil (7 a). Recrystallization of 7 a from ethanol yields the ethanol-1:1-adduct 7 b. Heating of 7 a in dimethylsulfoxide with D20 yields the N(l),N(3)-dideutero-C(5)-diphenylphosphino-uracil (7 c). All compounds were characterized by infrared, Raman, iH, 31 P NMR and mass spectra. 7 a shows a very small antitumor activity. 
  Reference    Z. Naturforsch. 38b, 1165—1172 (1983); eingegangen am 19. Mai 1983 
  Published    1983 
  Keywords    Diphenylphosphino Substituted Uracils, Rearrangement, NMR Spectra, Vibrational Spectra, Mass Spectra 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1165.pdf 
 Identifier    ZNB-1983-38b-1165 
 Volume    38 
74Author    Matthias Moll, Behrens* Werner Helmut, Günther Popp, WolfPeter Liehr, FehlhammerRequires cookie*
 Title    Über das [C7H7Fe2(CO)5]--Anion (C7H7 = Cycloheptatrienyl) About the [C7H7Fe2(CO)5]--Anion (C7H7 = Cycloheptatrienyl)  
 Abstract    The extremely unstable anionic complex [C7H7Fe2(CO)6]~ (C7H7 = cycloheptatrienyl) which decomposes in polar solvents under CO elimination to give [C7H7Fe2(CO)s]~ can be prepared by deprotonation of C7H8Fe2(CO)6 (C7H8 = cycloheptatriene) with NaN(SiMe3)2 in CßHe-The NMR spectra of [C7H7Fe2(CO)5]~ show the highly fluctional character of this anion in solution. The X-ray structural parameters of Ph4As[C7H7Fe2(CO)5] (space group P2i/n) can be interpreted in terms of a rotation of the tub shaped C7H7 ring against the CO bridged Fe2(CO)5 fragment in the solid state. Consequently, each iron atom is alternatingly rj 3 -or ^-coordinated to the allyl anion and the diene part, respectively, of the anionic 8n system of the cycloheptatrienyl ring. 
  Reference    Z. Naturforsch. 38b, 1446—1453 (1983); eingegangen am 7. Juni 1983 
  Published    1983 
  Keywords    Cycloheptatrienyl Pentacarbonyl Diferrate, IR Spectra, NMR Spectra, X-Ray 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1446.pdf 
 Identifier    ZNB-1983-38b-1446 
 Volume    38 
75Author    Ekkehard Lindner, E. Rnst, Ulrich KüsterRequires cookie*
 Title    Preparation and Properties of, and Reactions with, M etal-Containing H eterocycles, XX X V I [1] Novel Phosphane Ligands Containing Asymmetric Phosphorus or Carbon Atoms  
 Abstract    The functionalized ligands (H3C)PhP—(CH2)"-C1 (1, 2) [n = 2 (1), 3 (2)] and 
  Reference    (Z. Naturforsch. 39b, 115—117 [1984]; eingegangen am 25. Juli 1983) 
  Published    1984 
  Keywords    o>-Chloroalkyl(methyl)phenylphosphanes, Menthoxymethyl(diphenylphosphane), Mass Spectra, NMR Spectra 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0115_n.pdf 
 Identifier    ZNB-1984-39b-0115_n 
 Volume    39 
76Author    H.E JRequires cookie*
 Title    A tta-ur-Rahm an*, M ehrun Nisa, and Talat Zamir  
 Abstract    A new alkaloid, "papilicine", has been isolated from the leaves of Buxus papilosa to which structure (1) has been assigned on the basis of spectroscopic studies. Buxus species have been used in the indigenous system of medicine as febrifuge, for relief of rheumatism and for the treatm ent of a num ber of other ailments. Buxus papilosa C. K. Schn., Linn. 
  Reference    (Z. Naturforsch. 39b, 127—128 [1984]; received March 23 1983) 
  Published    1984 
  Keywords    Buxus papilosa, Alkaloids, Structure Elucidation, NMR Spectra, Mass Spectra 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0127_n.pdf 
 Identifier    ZNB-1984-39b-0127_n 
 Volume    39 
77Author    KlausR. Pörschke, Richard Mynott, Klaus Angermund, ++, Carl KrügerRequires cookie*
 Title    Neue Bis(phosphan)-nickel(0)-alkin-Komplexe New Bis(phosphane)-nickel(0)-alkyne Complexes  
 Abstract    (Me 3 P)2Ni(C 2 H4) (5) and (dmpe) 2 Ni2(C 2 H4)3 (6) react with various alkynes including ethyne (acetylene) and 1-alkynes to form the crystalline compounds (Me 3 P) 2 Ni(C 2 RR'), (dmpe)Ni(C 2 RR'), and (dmpe)2Ni 2 (C 2 R2) 2 (R.R' = H, Me, Ph). Structural assignments were made on the basis of : H, I3 C, and 31 P NMR data. The crystal and molecular structure of (dmpe)Ni(C 2 Ph 2) (17) has been determined by X-ray crystallography. 
  Reference    Z. Naturforsch. 40b, 199—209 (1985); eingegangen am 15. Oktober 1984 
  Published    1985 
  Keywords    Alkynes, Nickel(O), Phosphanes, NMR Spectra, X-Ray 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0199.pdf 
 Identifier    ZNB-1985-40b-0199 
 Volume    40 
78Author    Markus Wieber, Dieter Wirth, Christian BurschkaRequires cookie*
 Title    Darstellung und Struktur einiger i/ 5 -Cyclopentadienyldicarbonyleisenbismut-Verbindungen Cp(CO) 2 FeBiX 2 mit fünffach koordiniertem Bismutatom Synthesis and Structure of Some ?7 5 -Cyclopentadienyldicarbonylironbismuth Compounds Cp(CO) 2 FeBiX 2 with Five-Coordinated Bismuth Atoms  
 Abstract    The synthesis and the spectroscopic properties of the title compounds Cp(CO) 2 FeBiX 2 (with X = SC(S)NEt 2 and SC(S)OMe) are described. The crystal structure of Cp(CO) 2 FeBi[SC(S)NEt 2 ] 2 was investigated by an X-ray analysis. 
  Reference    Z. Naturforsch. 40b, 258—262 (1985); eingegangen am 11. Oktober 1984 
  Published    1985 
  Keywords    Synthesis, Structure, // 5 -Cyclopentadienyldicarbonylironbismuth Compounds, NMR Spectra, IR Spectra 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0258.pdf 
 Identifier    ZNB-1985-40b-0258 
 Volume    40 
79Author    Atta-Ur -Rahman, Mehrun Nisa, Talat Zamir, H.E J, Wolfgang VoelterRequires cookie*
 Title    The Isolation and Structure of "Papilinine" a New Alkaloid from Buxus papilosa  
 Abstract    A new alkaloid "Papilinine" has been isolated from the leaves of Buxus papilosa to which structure 1 has been assigned. 
  Reference    Z. Naturforsch. 40b, 565—566 (1985); received June 28 1984 
  Published    1985 
  Keywords    Buxus papilosa, Steroidal Alkaloids, Structure Elucidation, NMR Spectra, Mass Spectra 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0565_n.pdf 
 Identifier    ZNB-1985-40b-0565_n 
 Volume    40 
80Author    GerhardG. Habermehl, PeterE. HammannRequires cookie*
 Title    Rearrangement of 14/3-Hydroxy-12ß-sulfoxy-steroids to 13,17-Seco-12,17-cyclo-steroids; a 2D-NMR Analysis  
 Abstract    The rearrangement of 3-oxo-14/3-hydroxy-12/3-methanesulfoxy-card-20(22)-enolide and 14/3-hydroxy-12/3-methanesulfoxy-pregnane-3,20-dione during elimination of the sulfoxygroups was studied. By means of 2D-NMR analysis the structures were determined as 13,17-seco-12,17-cyclo-steroids. 
  Reference    Z. Naturforsch. 40b, 656—660 (1985); received November 14 1984 
  Published    1985 
  Keywords    13, 17-Decyclo-12, 17-cyclosteroids, Steroid Rearrangement, NMR Spectra 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0656.pdf 
 Identifier    ZNB-1985-40b-0656 
 Volume    40 
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