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1974[X]
61Author    K.Requires cookie*
 Title    D arstellung und K ristallstruktur der H ochdruckphase AgA lS3-II Preparation and Crystal Structure of the High-pressure Phase AgAlS2-II  
 Abstract    l a u s -J ü r g e n R a n g e , G e r d E n g e r t und A r m in W e is s I n s titu t für Anorganische Chemie der U n iv ersität M ünchen 
  Reference    (Z. Naturforsch. 29b, 186 [1974]) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0186.pdf 
 Identifier    ZNB-1974-29b-0186 
 Volume    29 
62Author    Requires cookie*
 Title    Isotope Effects o f Uranium by Ion E xchan ge in the System  
 Abstract    D ow ex 50 / a-Hydroxyisobutyrate J o r m a A a l t o n e x *, K l a u s G. H e u m a n n * * , a n d P i k k a P i e t i l ä * * D epartm ent of Radiochem istry, U n iv ersity of H elsinki ** Fachbereich A norganische Chemie u n d K ernchem ie, Technische Hochschule D a rm sta d t D istribution factors, column experim ents, separation factors, m ass spectrom etry In th is investigation th e isotope effect of uran iu m in th e system Dowex 50 resin/ <x-h y d roxyisobutyrate solution was studied by mass spectrom etry. A recycle ion exchange colum n was used for th e separation experim ents. T he dependence of th e isotope effect on th e p H value and on the concentration of th e a-h y d ro x y iso b u ty rate solution used as eluent was investigated. In the case of a 0.07 m and a 0.22 m a-h y d ro x y iso b u ty rate solution th e elem entary separation factor of uranium was calculated to be 1.00019 an d 1.00006, respectively. In b oth cases an enrichm ent of 235U in relatio n to 238U was found in th e solution. In addition th e distribution factor of th e uran y l ions in th e in v estig ated system was determ ined in the pH range betw een 2 an d 6. The d istrib u tio n facto r depends strongly on th e p H value. W ith increasing pH values th e d istrib u tio n factor decreases. The results obtained for th e elem entary separation facto r an d th e d istrib u tio n factor are com pared w ith other investigations. 
  Reference    (Z. Naturforsch. 29b, 190—194 [1974]; received October 8 1973) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0190.pdf 
 Identifier    ZNB-1974-29b-0190 
 Volume    29 
63Author    Requires cookie*
 Title      
 Abstract    T richlorstannido-m etallat(0)-K om plexen des Typs [M(CO)5SnCl3]' (M = Cr, Mo, W) M etal Complexes w ith Anionic L igands of E lem ents of the M ain G roup IV , V 1 119mSn-M össbauer-Spectroscopic Investigations a t T richlorostannido Metalate(O) Complexes of th e Type [M(CO)5SnCl3]~ (M = Cr, Mo, W) T h o m a s K r u c k * , K l a u s E h l e r t * u n d H e r m a n n J . O d e n t h a l ** In s titu t für Anorganische Chemie* und I n s titu t fü r K ernchem ie** der U n iv ersität zu K öln 119mSn-M össbauer spectra [M(CO)5SnCl3]' The 119mSn M össbauer spectra of trichlorostannido p en tacarbonyl metalates(O), [M( 
  Reference    (Z. Naturforsch. 29b, 195—197 [1974]; eingegangen am 26. November 1973) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0195.pdf 
 Identifier    ZNB-1974-29b-0195 
 Volume    29 
64Author    Thomas Kruck, Werner MollsRequires cookie*
 Title    Trichlorgerm ido-m etallat(O )-K om plexe von Chrom, Molybdän und Nickel  
 Abstract    Metal Complexes with Anionic Ligands of Elements of the Main Group IV, V I1 Trichlorogermido Metalate(O) Complexes of Chromium, Molybdenum, and Nickel T h o m a s K r u c k u n d W e r n e r M o l l s I n s titu t für Anorganische Chemie der U n iv ersität zu Köln [M(CO)m_w(GeCl3)n]M_ complexes (n = 1,2,3), [Cr(GeCl3)6]6_, synthesis, IR spectra 
  Reference    (Z. Naturforsch. 29b, 198—201 [1974]; eingegangen am 20. November 1973) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0198.pdf 
 Identifier    ZNB-1974-29b-0198 
 Volume    29 
65Author    '. ConnorRequires cookie*
 Title    4EH 4ZHIr  
 Abstract    • BASIC ZINC CARBONATE FORM A TIO N 203 C 02-content of the mixture. To start the reaction the stream was diverted through the reaction vessel and any C 02 adsorption or absorption by the sample resulted in a depletion in the C 02-content of the gas stream. The absorption was thus monitored with the IRGA baseline being checked occasionally by deflecting the stream through the bypass. The amount of C 02 absorbed by the sample was pro­ portional to the area between the absorption curve and standard and since the flow rate was known, the C 02-uptake by the sample could be calculated. Differential Thermal Analysis studies were con­ ducted using a Du Pont Thermograph. Results 
  Reference    (Z. Naturforsch. 29b, 202 [1974]) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0202.pdf 
 Identifier    ZNB-1974-29b-0202 
 Volume    29 
66Author    Requires cookie*
 Title    H alogenide der Pentafluorphenylthiophosphonic und -thiophosphinsäure  
 Abstract    H alides of P entafluorophenylthiophosphonic an d -thiophosphinic acid M a n f r e d F i l d u n d T h o m a s S t a n k i e w i c z L ehrstuhl B für A norganische Chemie der Technischen U n iv ersität Braunschweig Pentafluorophenyl-phosphorus com pounds, thiophosphonic dihalides, thiophosphinic halides, UF NMR, 31P NMR The thiophosphonic and thiophosphinic halides, C6F 5P (S)X 2, (C6F 5)2P(S)X , and R(C6F 5)P(S)X (X = F, Cl, Br, and R = C H 3, C ,H 5, tert-C4H 9, C6H 5) have been prepared, a) by addition of sulfur to th e phosphorus(III) derivatives, b) by th e reaction of chloro-phosphoranes w ith H 2S, and c) by halogen exchange reaction. The 31P-and 1X F NM R d ata are discussed. 
  Reference    (Z. Naturforsch. 29b, 206—208 [1974]; eingegangen am 29. November 1973 / 3. Januar 1974) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0206.pdf 
 Identifier    ZNB-1974-29b-0206 
 Volume    29 
67Author    Requires cookie*
 Title    Structure and Reactivity of Aryl-cyanohydrins  
 Abstract    a s t r o a n d 0 . M. S o r a r r a i n D epartam ento de Fi'sica, F a c u lta d de Ciencias E x actas, La Plata, R epüblica A rgentina A ryl-cyanohydrins, q u an tu m calculations The relation betw een stru ctu re and rea ctiv ity of some aryl-cyanohydrins is discussed. The CNDO/2 m ethod has been applied and th e various energy term s of th e fundam ental state as well as th e charge change of th e carbonyl C-atom have been q u an titativ ely a n a ­ lysed. The lim itation of the present approach is p ointed out. 
  Reference    (Z. Naturforsch. 29b, 209—212 [1974]; received April 4/June 25/August 21 1973) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0209.pdf 
 Identifier    ZNB-1974-29b-0209 
 Volume    29 
68Author    Requires cookie*
 Title    Chloraustausch zw isch en A n tim on (III)-C h lorid -(36Cl) und H exachlorpropen ( 1 )  
  Reference    (Z. Naturforsch. 29b, 213 [1974]) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0213.pdf 
 Identifier    ZNB-1974-29b-0213 
 Volume    29 
69Author    Requires cookie*
 Title    Protonenresonanz-spektroskopische U ntersuchungen am Chlor-, Brom -und M ethylcyclobutadieneisentricarbonyl  
 Abstract    A P ro to n M agnetic R esonance In v e stig atio n on Chloro-, Brom o-an d M ethyl-cyclobutadiene-irontricarbonyl H a n s A l b e r t B r u n e , H a n s H a n e b e c k , G e r n o t H o r l b e c k u n d H a n s H ü t h e r * ^ -N M R -spectra, structure, bonding properties P roton m agnetic resonance spectra including all observable 13C-H-couplings have been m easured for chloro-cyclobutadiene-irontricarbonyl,brom o-cyclobutadiene-irontricarbonyl and m ethyl-cyclobutadiene-irontricarbonyl. The results are discussed w ith respect to stru ctu re and bonding. The structure of a cyclic diene w ith altern atin g double an d single bonds can be excluded for th e four-m em bered ring of all three com pounds. In stea d the complex bonded cyclobutadiene contains an electron d istrib u tio n of higher sym m etry w ith -despite the influence of th e su b stitu en t — nearly uniform bond orders. 
  Reference    (Z. Naturforsch. 29b, 219—227 [1974]; eingegangen am 2. November 1973) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0219.pdf 
 Identifier    ZNB-1974-29b-0219 
 Volume    29 
70Author    Requires cookie*
 Title    Zur Darstellbarkeit von 2 .2 #-disubstituierten 3.3' -Spirobi-[3H -naphtho(2.1-b)pyranen]  
 Abstract    In both a-positions relative to th e spiro-C-atom su b stitu te d spirobipyrans have th e expected spiropyran stru ctu re, in spite of th eir exceptional behaviour th a t th e ir pyrylium salts can not be isolated generally. Strong steric effects are responsible for th e in stab ility of those pyrylium salts, as it can be shown by UV-and IR-spectroscopic investigations. 
  Reference    (Z. Naturforsch. 29b, 228—230 [1974]; eingegangen am 3. November 1973) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0228.pdf 
 Identifier    ZNB-1974-29b-0228 
 Volume    29 
71Author    Requires cookie*
 Title    A lkylierungs-und Solvolyse-R eaktionen von N -A lkoxy-N -aryl-carbonsäuream iden* Alkylation and Solvolysis Reactions of N-Alkoxy-N-aryl-carboxamides  
  Reference    (Z. Naturforsch. 29b, 231 [1974]) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0231.pdf 
 Identifier    ZNB-1974-29b-0231 
 Volume    29 
72Author    Requires cookie*
 Title    O xidation of a-A rylam ino-acetophenone-oxim es  
 Abstract    R i c h a r d K r e h e r u n d K l a u s D e c k a r d t I n s titu t für Organische Chemie der Technischen Hochschule D arm stad t a-A rylam ino-acetophenone-oxim es, oxidation w ith ferric chloride, Zl3-imidazoline-3-oxides 
  Reference    (Z. Naturforsch. 29b, 234—236 [1974]; eingegangen am 16. November 1973) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0234.pdf 
 Identifier    ZNB-1974-29b-0234 
 Volume    29 
73Author    Requires cookie*
 Title    Struktur des Reaktionsproduktes aus a-[p -C h lor-anilino]-acetoph en on-oxim und E isen(III)-chlorid -R öntgenographische K ristallstrukturbestim m ung  
  Reference    (Z. Naturforsch. 29b, 237 [1974]) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0237.pdf 
 Identifier    ZNB-1974-29b-0237 
 Volume    29 
74Author    Requires cookie*
 Title    Sign and Orientation Determ ination o f the Principal A xis o f the Electric Field Gradient in F e57 Enriched D eoxygenated M yoglobin Single Crystals  
 Abstract    U l r i c h G o n s e r , Y u t a k a M a e d a *, A l f r e d T r a u t w e i n , F r i t z P a r a k * * , a n d H e l m u t F o r m a n e k * * * Fachbereich 12.1, W erkstoffphysik und W erkstofftechnologie, U n iv ersität des Saarlandes Deoxymyoglobin, M ö s s b a u e r investigation, electric fieldgradient Single crystals of myoglobin enriched on F e 57 w ith a diam eter of ab o u t 0.5 m m were prepared. A fter deoxygenation crystallographic alignm ent an d M össbauer m easurem ents were carried out a t 77 °K. In the experim ent eight different orientations were selected by ro tatin g the crystal around the b axis, thus, b axis an d y-ray propagation direction re ­ m ained perpendicular to each other. F rom th e in ten sity ratio of th e qu ad ru p o le split spectra we derive the sign and the orientation of th e principal axis of th e electric field gradient. W e find Vzz to be positive and forming an angle of 40° to th e b axis. F ro m two alternatives consistent w ith our experim ents we conclude th a t Vzz is m ost likely oriented along one of the four Fe-N directions in th e heme. 
  Reference    (Z. Naturforsch. 29b, 241—244 [1974]; received November 8 1973) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0241.pdf 
 Identifier    ZNB-1974-29b-0241 
 Volume    29 
75Author    Requires cookie*
 Title    X -R ay Induced Lum inescence in Aqueous Solutions o f A m inobenzoic Acids  
 Abstract    r ü t z In s titu t für B iophysik u n d Strahlenbiologie der U niversität Freiburg X -ray, lum inescene, am inobenzoic acids L ight emission induced by x-irradiation of deaerated aqueous solutions of anthranilic acid (AH) is predom inantly due to chemiluminescence. W ithin th e range of p H 3.5 to pH 12 only emission of th e anion (A-) is observed, in co n trast to th e fluorescence which ex ­ hibits a characteristic spectral change under th e protolytic equilibrium A -+ H+ ^ A H (pK = 4.805). The chem ilum inescence is proposed to involve reaction of eaf, w ith th e anthranilo radical 0 (N H 2)+COO~, form ed by OH a tta c k upon A -or AH. D eprotonation of 0 (N H 2)+COO" occurs a t p H > 7. A bsolute yields of th e x-ray induced emissions and absolute fluorescence q u an tu m yields have been determ ined for th e am inobenzoic acid isomers and for some related com pounds. 
  Reference    (Z. Naturforsch. 29b, 245—253 [1974]; received August 23/STovember 20 1973) 
  Published    1974 
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 Identifier    ZNB-1974-29b-0245 
 Volume    29 
76Author    Requires cookie*
 Title    Über die H ydratisierung eines  
 Abstract    a,ß-ungesättigten Aldehyds O n th e H y d r a tio n o f a n a ,/? -U n sa tu ra te d A ldehyde K l a u s S o m m e r m e y e r In s titu t für Physikalische Chemie der U n iv ersität F reiburg H y d ratio n , a,/?-unsaturated aldeyhyde N ,N ,N -T riethyl-N -[ß-form yl-vinyl]-am m onium perchlorat (1), a cationic a, ß u n satu rated aldehyde reacts w ith w ater a t th e carbonyl group. No ad d itio n was found to th e olefinic double bound. This unusual behavior will be explained. The tem p eratu re dependence of th e equilibrium constant m easured by X H NM R spectroscopy result in zlH = -3 . 8 ± 0.5 kcal/Mol, J S 300C = -2 0 i 3 e.u. 
  Reference    (Z. Naturforsch. 29b, 254—257 [1974]; eingegangen am 14. Juni/10. August 1973) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0254.pdf 
 Identifier    ZNB-1974-29b-0254 
 Volume    29 
77Author    Requires cookie*
 Title    R eaktion von K ohlensuboxid m it Thioharnstoff und Thioamiden Syntheses of Heterocycles, 181 The Reaction of Carbon Suboxicle with Thiourea and Thioamides  
 Abstract    i e g l e r I n s titu t für Organische Chemie der U n iv ersität Graz, Österreich 
  Reference    (Z. Naturforsch. 29b, 258 [1974]) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0258.pdf 
 Identifier    ZNB-1974-29b-0258 
 Volume    29 
78Author    Requires cookie*
 Title    The Contribution o f the Single Tryptophyl Residues to the Fluorescence Em ission o f Porcine Elastase  
 Abstract    G i u l i o J o r i 1 a n d G u i d o G a l i a z z o Is titu to di Chimica Organica, U n iv ersita' di P adova, Ita ly T ry p to p h an emission, specific photooxidation, D aO effect In order to evaluate the contribution of the single try p to p h y l residues to th e fluorescence emission of elastase, th e la tte r was analyzed as a function of pH , as well as in th e presence of some p e rtu rb a n ts and quenchers. Moreover, specific try p to p h y l residues were converted to form yl-kynurenine by photosensitized oxidation. Our results suggest th a t th e tw o external try p to p h a n s 26 and 164 account for a t least 50% of th e to ta l em ission; o u t of th e tw o p artially buried tryptophans, th e residue 83 is practically non-fluorescent, whereas th e residue 12 contributes about one fourth of th e elastase fluorescence. The residual fluorescence (about 25% of the to ta l emission) is to be ascribed to th e th ree deeply buried try p to p h a n s 39, 132 and 232. 
  Reference    (Z. Naturforsch. 29b, 261—265 [1974]; received November 20 1973) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0261.pdf 
 Identifier    ZNB-1974-29b-0261 
 Volume    29 
79Author    Requires cookie*
 Title    Die Kristalldaten der Goldhalogenide AuBr3 und AuCl  
 Abstract    The L attice P aram eters of th e Gold Halogenides A uB r3 an d AuCl J o a c h im S t r ä h l e und K l a u s -P e t e r L ö r c h e r 1 I n s titu t für Anorganische Chemie der U niversität K arlsruhe 
  Reference    (Z. Naturforsch. 29b, 266—267 [1974]; eingegangen am 9. November) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0266_n.pdf 
 Identifier    ZNB-1974-29b-0266_n 
 Volume    29 
80Author    Requires cookie*
 Title    Kupfer(II)komplexe mit Polypyridyläthylenen  
 Abstract    Metal Complexes w ith Polym erie Ligands, V I1 Copper(II)Complexes w ith Polypyridvlethylenes H a n s -G . B i e d e r m a n n , W o l f g a n g G r a f , E r i k a 
  Reference    (Z. Naturforsch. 29b, 267 [1974]) 
  Published    1974 
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 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0267_n.pdf 
 Identifier    ZNB-1974-29b-0267_n 
 Volume    29 
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