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1970 (393)
1Author    K.-HL., D. S.Requires cookie*
 Title    Physikalische Eigenschaften und Salze des Selenocarbohydrazids  
 Abstract    Einige physikalische Eigenschaften des Selenocarbohydrazids, wie Löslichkeit, hygroskopisches Verhalten und thermische Stabilität, wurden quantitativ bestimmt. Die Salze SeC(NH — NH«)2-2 HBr, SeC(NH —N H ,)2-2 HJ, S e C (N H -N H 2) 2-H2S 0 4 und S e C (N H -N H 2) 2-H3P 0 4 wurden erstmals dargestellt und charakterisiert. 
  Reference    (Z. Naturforsch. 25b, 1 [1970]; eingegangen am 2 1. August 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0001.pdf 
 Identifier    ZNB-1970-25b-0001 
 Volume    25 
2Author    Requires cookie*
 Title    Darstellung und Eigenschaften von 1-Carbamoyl-selenocarbohydrazid, 1-Thiocarbamoyl-selenocarbohydrazid und 1.5-Bis-thiocarbamoyl- selenocarbohydrazid  
  Reference    (Z. Naturforsch. 25b, 3 [1970]) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0003.pdf 
 Identifier    ZNB-1970-25b-0003 
 Volume    25 
3Author    C., Anorganische Abteilung, Farbenfabriken Bayer, Ag LeverkusenRequires cookie*
 Title    Herstellung und Analyse von ikosaedrischen Dodecahydro-dodecaboraten  
 Abstract    H a r z d o r f , H . N i e d e r p r ü m u n d H . O d e n b a c h Herrn Professor Dr. K u r t H a n s e n zum 60. Geburtstag gew idm et 
  Reference    (Z. Naturforsch. 25b, 6 [1970]; eingegangen am 28. Juni 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0006.pdf 
 Identifier    ZNB-1970-25b-0006 
 Volume    25 
4Author    W. S.Requires cookie*
 Title    XI. Konformation von 2.2.4.6-Tetraalkyl-l-oxa-2-sila-4-aza-cyclohexanen1  
 Abstract    Herrn Professor Dr. K u r t H a n s e n zum 60. Geburtstag gewidm et Durch Umsetzung von 2.3-disubstituierten Äthanolaminen mit Brommethyl-dimethyl-äthoxy-silan wurden 6-gliedrige Ringe der Konstitution 3 hergestellt. Aufnahme und Auswertung der 100 MHz-1H-NMR-Spektren ergab Cyclohexane in der Sessel-Konformation mit äquatorialer Stellung der Alkylgruppen an Stickstoff und Kohlenstoff. 
  Reference    (Z. Naturforsch. 25b, 11 [1970]; eingegangen am 28. Juni 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0011.pdf 
 Identifier    ZNB-1970-25b-0011 
 Volume    25 
5Author    Zentrallabor Der, Dynamit Nobel, Ag TroisdorfRequires cookie*
 Title    Über die Herstellung und UV-Absorption einiger Siliciumester und Metalle enthaltender Benzophenon-Derivate * R o s h d y M . I s m a il  
  Reference    (Z. Naturforsch. 25b, 14 [1970]; eingegangen am 28. Juni 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0014.pdf 
 Identifier    ZNB-1970-25b-0014 
 Volume    25 
6Author    S. D., A.M BRequires cookie*
 Title    I. Reactions of Uranium pentaethoxide with carboxylic acids  
 Abstract    Reactions of carboxylic acids in different stoichiometric ratios have been carried out under anhydrous conditions, the compounds of the type U (OEt) 4 (OOCR), U (O E t)3(OOCR)2 , U (OEt) 2 (OOCR) 3 and U (OEt) (OOCR) 4 (where R is CH3 , C2H5 , C3H7 and C6H5) have been isolated. Lactic acid yielded the compounds of the type U (0 E t) 3(C3H40 3) , U (OEt) (C3H40 3) 2 , U2(C3H40 3) 5 and U (C3H40 3) (C3H50 3). Determination of molecular weight of some of the soluble derivatives of benzoic acid, suggest them to be dimeric in boiling benzene. 
  Reference    (Z. Naturforsch. 25b, 18 [1970]; eingegangen am 9. September 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0018.pdf 
 Identifier    ZNB-1970-25b-0018 
 Volume    25 
7Author    C.Requires cookie*
 Title    Potentiometrie Studies on Stepwise Mixed Ligand Complex Formation  
 Abstract    u (I I) , N i (I I) , Z n (I I) o r C d (I I)-I m in o d ia c e tic a c id -D ia m in e s G. S h a r m a a n d J. P . T a n d o n Stepwise mixed ligand complex formation is observed in the systems containing metal ion, imino­ diacetic acid (IMDA) as primary ligand and one of the diamines, such as ethylenediamine (en), 1,2-propanediamine (1,2-pn) and 1,3-propanediamine (1,3-pn) as secondary ligands. Potentionmetric titrations indicate the formation of ternary complexes having a 1 :1:1 molar ratio of metal ion to iminodiacetic acid to the secondary ligand. Initially, metal-IMDA (1:1) complex is formed in the lower buffer region prior to the formation of the ternary complex and the addition of the secon­ dary ligand takes place only after the combination with the primary ligand is complete. Formation constants (log &mab) °f the ternary complexes have been calculated and the probable reaction mechanism is suggested. The order of stability in terms of metal ion has been found to be Cu (II) > N i(II) > Z n (II) > C d (II) and in terms of secondary ligand as l,2 -p n > e n > l,3 -p n . 
  Reference    (Z. Naturforsch. 25b, 22 [1970]; eingegangen am 20. Oktober 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0022.pdf 
 Identifier    ZNB-1970-25b-0022 
 Volume    25 
8Author    G. K. ChRequires cookie*
 Title    Potentiometrie Studies on Mixed Ligand Complexes Copper(II)-oxalic Acid-diamine  
 Abstract    The potentiometric studies of the systems, copper (II) -oxalic acid and one of the diamines, o-phenylenediamine (phenen), ethylenediamine (en) and 1,2-diaminopropane (pn) have been carried out. These studies show the formation of mixed ligand complexes in which all the three species are p r e s e n t in th e ra tio o f 1 : 1 : 1 . 
  Reference    (Z. Naturforsch. 25b, 26 [1970]; eingegangen am 9. September 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0026.pdf 
 Identifier    ZNB-1970-25b-0026 
 Volume    25 
9Author    G.J M IsRequires cookie*
 Title    Potentiometrie Determination of some Thio-compounds using Copper(I) Chloride as the Titrimetric Reagent  
 Abstract    Copper (I) chloride has been used for the potentiometric determination of sulphur compounds, namely, n-dodecane-thiol, toluene-a-thiol, thiophenol, monothioglycerol, 2-mercaptoethanol and ß-mer-captopropionic, thioglycollic, thiobenzoic and thiosalicylic acids. The determinations are possible even in the presence of their corresponding oxygen derivatives and results within an accuracy of ± 0.4% have been obtained. 
  Reference    (Z. Naturforsch. 25b, 30 [1970]; eingegangen am 3. September 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0030.pdf 
 Identifier    ZNB-1970-25b-0030 
 Volume    25 
10Author    P. P.Requires cookie*
 Title    Niobium(V) and Tantalum(V) Derivatives of Schiff Bases Derived from ß-Hydroxynaphthaldehyde and Acetylacetone with n-Hydroxy-alkylamines  
 Abstract    Schiff base derivatives of niobium and tantalum of the types, M (OPr;) 3SB, M(OPr') (SB), and M (SB)2(SBH) have been synthesized by the reactions of the metal isopropoxides with the Schiff bases in 1:1, 1 : 2 and 1 : 3 molar ratios (where M = Nb or Ta, SBH® and SB20 re­ present the corresponding anions of the Schiff bases). Except the triisopropoxy acetylacetone-2-hydroxy-alkylimine derivatives of these metals which are distillable, all the remaining complexes decompose when an attempt is made to distil them. The triisopropoxy mono -Schiff base and the tris -Schiff base derivatives of these metals are essentially monomeric in boiling benzene and probably possess hexa-and octa-coordinated metal atoms, while the monoisopropoxy bis-Schiff base complexes show slight tendency of polymerization. 
  Reference    (Z. Naturforsch. 25b, 32 [1970]; eingegangen am 29. September 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0032.pdf 
 Identifier    ZNB-1970-25b-0032 
 Volume    25 
11Author    M.P BRequires cookie*
 Title    Light Absorption in Some Substituted Methiodides of Styryl Quinolines  
 Abstract    The absorption spectra of 3'-hydroxy 1-methyl 2-quinolinium iodide, 4'-hydroxy styryl 1-methyl 2-quinolinium iodide, 3' :4'-hydroxy 3'-methoxy styryl 1-methyl 2-quinolinium iodide in different solvents have been studied in the region 200 m/n —1000 m/u. Four bands have been assigned to different intramolecular transitions. 
  Reference    (Z. Naturforsch. 25b, 36 [1970]; eingegangen am 10. September 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0036.pdf 
 Identifier    ZNB-1970-25b-0036 
 Volume    25 
12Author    Requires cookie*
 Title    Alkylaryläther-Alkylphenol-Umlagerungen im Plasma  
 Abstract    H a r a l d Su h r und R u d o l f I. W eiss Anisol, Phenetol und Propylphenyläther geben im Plasma Alkylphenole und Phenol. Die Ab­ hängigkeit der Gesamtausbeute und der Zusammensetzung der Produktgemische von den Versuchs­ parametern sowie des Reaktionsmechanismus wird 
  Reference    (Z. Naturforsch. 25b, 41 [1970]; eingegangen am 13. Oktober 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0041.pdf 
 Identifier    ZNB-1970-25b-0041 
 Volume    25 
13Author    Requires cookie*
 Title    A Study of the Association of Prodigiosin, Isolated from Serratia Marcescens  
 Abstract    D im it e r P . D im it r o v , A t a n a s B o y a n o f f , and T o d o r A . T o d o r o v The spectral characteristics of prodigiosin in the visual range and the changes occurring in them through different concentration of the substance, polarity of solvent, and temperature have been studied. The conclusion has been reached that these changes are due to the existence of two forms of the pigment: monomeric — with a maximum at 460 m/x, and dimeric — with a maximum at 530 m/u. It is assumed that in certain conditions there may exist a trimeric form of the pigment. Data are being adduced in support of that assumption. 
  Reference    (Z. Naturforsch. 25b, 46 [1970]; eingegangen am 30. Juni 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0046.pdf 
 Identifier    ZNB-1970-25b-0046 
 Volume    25 
14Author    Requires cookie*
 Title    Arthoniasäure  
 Abstract    , ein neues Depsid aus Arthonia impolita (EH RH .) BORR. S ie g f r i e d H u n e c k und K l a u s S c h r e i b e r in Halle/Saale und G ü n t h e r S n a t z k e und H a n s -W o l f r a m F e h l h a b e r Aus A rthonia im polita (EH RH .) BORR. wird das neue Depsid Arthoniasäure isoliert und als 4-0-Desmethyl-2/-0-methyl-microphyllinsäure (1) strukturell aufgeklärt. Im Rahmen der phytochemischen Untersuchung einiger Arthoniaceen 1 analysierten wir auch Artho­ nia impolita (EH RH .) BO RR., deren Thallus sich 
  Reference    (Z. Naturforsch. 25b, 49 [1970]; eingegangen am 9. Ju li 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0049.pdf 
 Identifier    ZNB-1970-25b-0049 
 Volume    25 
15Author    Requires cookie*
 Title    Das Bürzeldrüsensekret des Papageientauchers (Fratercula arcticaJ  
 Abstract    The Uropygyal Gland F a t of the Puffin (Fratercula arctica) J ü r g e n J a c o b und Ge r n o t Gr im m e r The uropygial (preen) gland fat of the puffin (fratercula arctica) is mainly a mixture of waxes {11%) and triglycerides (23%). The isolated triglycerides which are the main part of the fat tissue of the gland differ only little from the depot fat which was investigated simultaneously. After separation into groups of equal carbon number by preparative GLC the waxes were shown to be a complex mixture of esters between straight-chain, even-numbered alcohols (diain-length C8 , C10, C12 , C14 and C16) and octanoic, decanoic and dodecanoic acid. 
  Reference    (Z. Naturforsch. 25b, 54 [1970]; eingegangen am 1. September 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0054.pdf 
 Identifier    ZNB-1970-25b-0054 
 Volume    25 
16Author    R. Im, R. ItRequires cookie*
 Title    I. Spektroskopische Untersuchungen am Trioseredukton  
 Abstract    The infrared and R a m a n spectra of triosereductone in polycrystalline state as well as its 1H-n.m.r. spectrum in DMSO-solution support a structure with two five-membered chelate rings. 
  Reference    (Z. Naturforsch. 25b, 57 [1970]; eingegangen am 13. September 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0057.pdf 
 Identifier    ZNB-1970-25b-0057 
 Volume    25 
17Author    JürgenG M Eyer-BertenrathRequires cookie*
 Title    from Rat Liver Ribosomes  
 Abstract    Zentrallabor des Stadtkrankenhauses Hanau und W o l f r a m D o m s c h k e Addition of EDTA * to ribosomal preparations followed by gelfiltration on agarose-columns, causes separation of ribosomal proteins accounting for the pink colour of ribosomes. This chromo­ protein contains 20% iron. It recombines with the colourless subribosomal nucleoproteid-particle from which it had been released, during incubation in a ribosome-stable buffer lacking EDTA. 
  Reference    (Z. Naturforsch. 25b, 61 [1970]; eingegangen am 28. Ju li 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0061.pdf 
 Identifier    ZNB-1970-25b-0061 
 Volume    25 
18Author    Requires cookie*
 Title      
 Abstract    Die Auftrennung intakter Ribosomen (ca. 30 — 40 OD260 Auftrag pro Gradientenbecher) in die beiden Untereinheiten erfolgte in linearen Saccharose-Gradien­ ten (5 — 20% Saccharose in 0,05 M Tris-Puffer pH 7,6 + 0,025m KCl + 0,004 m Na2-EDTA — Abkürzung: Na2-EDTA = Na2-Äthylendiamintetraacetat) durch 8-stdg. Zentrifugation bei 22500 Upm (Schwingrotor SW 25/1, Spinco L 2 65). Anschließend wurden nach Punktion des Röhrchenbodens und Messung der Ex­ tinktion im Durchflußphotometer die den beiden Unter­ einheiten entsprechenden Gipfelfraktionen jeweils ver­ einigt und 3 Stdn. bei 65000 Upm zentrifugiert (Spinco-Ultrazentrifuge L 2 65, Rotor 65). Die sedimentierten Untereinheiten wurden nun entweder der Gelfiltration an Sepharose-4B (s. o.) zugeführt oder der Disk-Elek­ trophorese unterworfen. 3 H . W e l f l e u . H . B i e l k a , Z. Naturforschg. 23 b , 690 [1968]. 4 H. B i e l k a , H . W e l f l e , M. B ö t t g e r u . W . F ö r s t e r , Euro­ 
  Reference    (Z. Naturforsch. 25b, 67 [1970]) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0067.pdf 
 Identifier    ZNB-1970-25b-0067 
 Volume    25 
19Author    C.C K, E. IcRequires cookie*
 Title    Potential Transducing Properties of Microelectrodes Filled with Electrolyte or Metal  
  Reference    (Z. Naturforsch. 25b, 72 [1970]) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0072.pdf 
 Identifier    ZNB-1970-25b-0072 
 Volume    25 
20Author    H.M R, T. P., M. P.Requires cookie*
 Title    Some H eterocyclic Nitrogenous Compounds as Radioprotectants for Hematological Levels in X-Irradiated Mice  
 Abstract    In normal controls, the levels of hemoglobin concentration and hematocrit values remained almost unchanged throughout the experimentation period. Intraperitoneal administration of imidazole and benzimidazole affected rapid pharmacodynamic incidences which were not detected with cysteamine. Administration of imidazole did not induce detectable change in the level of hemoglobin concentration but slightly decreased the hematocrit value. Benzimidazole created slight depression in hemoglobin concentration and exerted no effect on hematocrit value. Cysteamine caused slight depression of both hemoglobin concentration and hematocrit value. Those changes were readily restorable with imidazole and benzimidazole while those with cysteamine lasted for more than three days. Irradiation caused progressive decrease in hemoglobin concentration and hematocrit values which continued till the death of the animals. A significant increase in the sedimentation rate of red blood cells was recorded. Irradiation of chemically protected animals caused initial decrease in hemoglobin concentration and hematocrit values which lasted till the fifths post-exposure day. Later, gradual restoration of normal levels of hematological values was recorded. Restoration was more rapid with benzimidazole than with imidazole, while cysteamine lied half way in its action. The increase in sedimentation rate of red blood cells was less pronounced and gradual restoration of the normal sedimentation rate was maintained during the post-irradiation time. It seems likely that the radioprotectants act on cellular and subcellular levels in the protected tissues but the actual role played by such compounds still awaits further investigation. Imidazole and benzimidazole proved to be effective radioprotectants of the hematopoietic tissue. Benzimidazole proved to exert the best radioprotective characters amongst the tested compounds in this concern. 
  Reference    (Z. Naturforsch. 25b, 80 [1970]; eingegangen am 5. Mai 1969) 
  Published    1970 
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 TEI-XML for    default:Reihe_B/25/ZNB-1970-25b-0080.pdf 
 Identifier    ZNB-1970-25b-0080 
 Volume    25 
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