| | 2 | Author
| | Requires cookie* | | | Title
| VI. 185Re/ 187Re-Kernquadrupolspektren von Perrhenaten  | | | | Abstract
| I. 185Re, 187R e -N Q R -S p ec tra o f P errhenates P a u l K . B u r k e r t u n d M a x F. E c k e l Anorganisch-chemisches L aboratorium der Technischen 185 i87Re-NQR, perrhenate R oom -tem perature 185Re, 187R e-N Q R -spectra of polycrystalline perrhenates were measured. A dependence of the NQR-frequencies of the ± 5/2 ^ + 3/2 ^ + 1 /2 transitions on nature and size of the cations in identical crystal structure was found. | | | |
Reference
| (Z. Naturforsch. 28b, 5—7 [1973]; eingegangen am 26. Oktober 1972) | | | |
Published
| 1973 | | | |
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| default:Reihe_B/28/ZNB-1973-28b-0005.pdf | | | | Identifier
| ZNB-1973-28b-0005 | | | | Volume
| 28 | |
| 3 | Author
| HeinzDieter Lutz, Hans-Jürgen Klüppel, Franz-Josef Marner, Hans-Joachim Kesterke | Requires cookie* | | | Title
| Zur Kenntnis der Barium-und Strontiumhalogenidhydrate | | | | Abstract
| The following alkaline earth halide hydrates could be found by differential thermal analysis: The dehydration temperatures increase w ith the size of the anions and decrease with the radius of the cations. The dehydration of SrCl2 • H 20 gives rise to two DTA-peaks, but there is no half-hydrate formed according to high-tem perature IR-measurements. The X -ray data of SrJ2 . H zO are communicated. | | | |
Reference
| (Z. Naturforsch. 28b, 8 [1973]; eingegangen am 18. September 1972) | | | |
Published
| 1973 | | | |
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| default:Reihe_B/28/ZNB-1973-28b-0008.pdf | | | | Identifier
| ZNB-1973-28b-0008 | | | | Volume
| 28 | |
| 5 | Author
| O. P. Slnghal | Requires cookie* | | | Title
| Temperature Variation of Principal Moments of Some Polyatomic Crystals | | | | Abstract
| Principal moments of some of the polyatomic single crystals such as ammonium di-chromate, ammonium chromate, potassium chromate and potassium permanganate have been determined from room temperature down to liquid air temperature. These have been found to decrease with the decrease of temperature. This variation is smaller in magnitude. It has been observed that the tem perature coefficient of the principal moments has almost the same value over the entire range of temperature. This small variation of paramagnetism has been attributed to the variation of absorption frequency in solid state. | | | |
Reference
| (Z. Naturforsch. 28b, 23—25 [1973]; received September 14 1972) | | | |
Published
| 1973 | | | |
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| default:Reihe_B/28/ZNB-1973-28b-0023.pdf | | | | Identifier
| ZNB-1973-28b-0023 | | | | Volume
| 28 | |
| 6 | Author
| | Requires cookie* | | | Title
| Über die Reaktion von Thallium (I)-Sulfid mit den Disulfiden von Vanadium, Niob, Tantal und Molybdän | | | | Abstract
| On the Reaction o f Thallium (I) Sulfide w ith the Disulfides of Vanadium, N iobium , Tantalium and M olybdenum V. S c h m i d t und W. R ü d o r f f Professor G e o r g B r a u e r zum 65. Geburtstag gewidmet Thallium metal intercalates of NbS2, thallium(I)-thiom etallates(V), thallium(I)-thiom etallates(IV), disulfides of V, Nb, Ta and Mo | | | |
Reference
| (Z. Naturforsch. 28b, 25 [1973]; eingegangen am 19. September 1972) | | | |
Published
| 1973 | | | |
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| default:Reihe_B/28/ZNB-1973-28b-0025.pdf | | | | Identifier
| ZNB-1973-28b-0025 | | | | Volume
| 28 | |
| 8 | Author
| | Requires cookie* | | | Title
| Reaktionen von Allylhalogeniden mit Pentakis(trifluorphosphin)-eisen(0) M etaltrifluorophosphine Complexes. X X X I X | | | | Abstract
| Reactions o f A lly l H alides w ith Pentakis(trifluorophosphine)-iron(0) T h o m a s K r u c k und L o t h a r K n o l l Organo-trifluorophosphine-iron complexes, synthesis, spectra T heU V -irradiation of solutions of allyljodide and allyl bromide, respectively, and Fe (PF3)5 yields 7r-allyl-tris(trifluorophosphine)-iron halides, 7r-C3H 5Fe(PF3)3X (X = J, Br). Otherwise, the ana logous reaction w ith allyl chloride yields the diene complexe 7r-hexa-1.3-diene-tris(trifluoro-phosphine)-iron (0), 7r-C6H lnFe(PF3)3. The compounds are characterised by their IR-,*H-NM R-and mass spectra. | | | |
Reference
| (Z. Naturforsch. 28b, 34—37 [1973]; eingegangen am 26. Oktober 1972) | | | |
Published
| 1973 | | | |
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| default:Reihe_B/28/ZNB-1973-28b-0034.pdf | | | | Identifier
| ZNB-1973-28b-0034 | | | | Volume
| 28 | |
| 11 | Author
| W. | Requires cookie* | | | Title
| Über die Reaktion von M 0O3 | | | | Abstract
| mit mehrwertigen Alkoholen Contributions to the Chem istry o f M olybdenum and Tungsten. X I 1 Reaction o f MoO» and W O s w ith Some P olyhydroxy Compounds F. A . S c h r ö d e r und J. S c h e r l e Professor Dr. G. B r a u e r zum 65. Geburtstag gewidmet MoO,, W Os, ethylenglycol, propandiol, glycerol The direct reaction of MoOs and W O s w ith ethylenglycol and glycerol is reported. The pre pared compounds were characterized by chemical analysis, IR-spectra and X -ray diffraction methods (powder and single cystal). Some chemical properties are given. All results indicate that the new compounds are derivatives of the hitherto unknown ortho-molybdic (VI) and tungstic (Vl)-acids. | | | |
Reference
| (Z. Naturforsch. 28b, 46 [1973]; eingegangen am 17. Oktober/31. Oktober 1972) | | | |
Published
| 1973 | | | |
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| default:Reihe_B/28/ZNB-1973-28b-0046.pdf | | | | Identifier
| ZNB-1973-28b-0046 | | | | Volume
| 28 | |
| 12 | Author
| | Requires cookie* | | | Title
| Metallkomplexe mit paramagnetischen Derivaten des Piper idin-1 -oxy ls | | | | Abstract
| M etal Com plexes o f Paramagnetic D erivatives o f P ip erid in e-l-oxyl D ie t e r J a h r , K a r l H e in z R e b h a n , K a r l E. S c h w a r z h a n s und J o s e f W ie d e m a n n Metal complexes, radicalic ligands, magnetic behaviour A series of complexes formed between transition metal ions and the stable free radicals 2,2,6,6-tetram ethyl-4-am ino-4-caboxypiperidine-l -oxyl, 2,2,6,6-tetramethyl-4-am inopiperidine-l -oxyl, 2,2,6,6-tetram ethyl-piperidine-l-oxyl and glyoxal-bis(2,2,2,6,6-tetramethyl-4-iminopiperidine-l -oxyl) has been prepared. The magnetic moments and the epr-spectra of the complexes have been investigated. Some of the complexes show a tem perature dependent interaction between the radicalic nitroxyl groups of the ligands. By analysis of the epr-spectra in the solid state there was found in some cases an interaction between the metal ion and the unpaired electrons of the ligands. | | | |
Reference
| (Z. Naturforsch. 28b, 55—62 [1973]; eingegangen am 20. Oktober 1972) | | | |
Published
| 1973 | | | |
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| default:Reihe_B/28/ZNB-1973-28b-0055.pdf | | | | Identifier
| ZNB-1973-28b-0055 | | | | Volume
| 28 | |
| 14 | Author
| | Requires cookie* | | | Title
| | | | | Abstract
| H errn Professor Dr.-Ing. W . H e im a n n zum 60. Geburtstag gewidmet Syntheses, spectra, bonding properties The syntheses of some p-substituted phenylcyclobutadieneirontricarbonyls are reported. C a r bonyl stretching frequencies, 13C — H — and H — H -coupling constants are discussed with re spect to bonding properties. There is apparently no conjugative interaction between the n-electron systems o f cyclobutadiene and the phenyl ring. | | | |
Reference
| (Z. Naturforsch. 28b, 68—82 [1973]; eingegangen am 29. August 1972) | | | |
Published
| 1973 | | | |
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| default:Reihe_B/28/ZNB-1973-28b-0068.pdf | | | | Identifier
| ZNB-1973-28b-0068 | | | | Volume
| 28 | |
| 15 | Author
| Helmut Hanssum, Wolfgang Lohmann | Requires cookie* | | | Title
| Influence of Nucleic Acid Bases on the Light-induced Reduction of Methylene Blue: ESR and Optical Measurements | | | | Abstract
| The effect of the nucleic acid bases adenine, cytosine, thymine, uracil, and 5-bromo-uracil on the light-induced reduction of methylene blue in dimethylsulfoxide has been investigated by means of ESR and optical absorption studies. It could be shown that the nucleic acid bases act as electron acceptors. The experimentally obtained electron affinities are of the following order: cytosine > adenine > thymine » uracil and confirm, thus, the theoretical predictions. | | | |
Reference
| (Z. Naturforsch. 28b, 82 [1973]; received August 30/October 17 1972) | | | |
Published
| 1973 | | | |
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| default:Reihe_B/28/ZNB-1973-28b-0082.pdf | | | | Identifier
| ZNB-1973-28b-0082 | | | | Volume
| 28 | |
| 17 | Author
| K.N M, V.P M E H T | Requires cookie* | | | Title
| Kinetics of Thermal Decomposition of Copper Soaps | | | | Abstract
| The thermal decomposition o f copper soaps has been studied both as a function of tempe rature and time. The whole range of the isothermal decomposition of copper soaps has been most adequately expressed by the P r o u t -T constants. In a previous communication 1 the decomposition of barium soaps was studied both as a function of temperature and time. In the present work a systemat ic study of the kinetics of the thermal decomposition of copper soaps has been undertaken and attemps have been made to test the validity of well known kinetic equations to account for the complete course of de composition. Experim ental Preparation of Soap | | | |
Reference
| (Z. Naturforsch. 28b, 90—92 [1973]; received August 2/August 22 1972) | | | |
Published
| 1973 | | | |
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| default:Reihe_B/28/ZNB-1973-28b-0090.pdf | | | | Identifier
| ZNB-1973-28b-0090 | | | | Volume
| 28 | |
| 18 | Author
| | Requires cookie* | | | Title
| Oscillatory Oxidation of Malonic Acid by Bromate | | | | Abstract
| Oscillation, malonic acid, bromate, oxydation, dibromo acetic acid A t room tem perature the diem ical reaction between malonic acid (0.2 m) and K B rO j (0.06 m) in 1 m H 2S 0 4 is catalysed by cerium ions. The oscillation of the yellow Ce4+ ion s ca n be observed directly during the reaction. By silica-gel chromatography the brominated products of the reaction have been identified as dibromoacetic acid and bromomalonic acid. | | | |
Reference
| (Z. Naturforsch. 28b, 93—97 [1973]; received July 28/September 8 1972) | | | |
Published
| 1973 | | | |
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| default:Reihe_B/28/ZNB-1973-28b-0093.pdf | | | | Identifier
| ZNB-1973-28b-0093 | | | | Volume
| 28 | |
|
