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'IR spectra' in keywords Facet   Publication Year 1991  [X]
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1991[X]
1Author    Gabriele Schatte, Helge WillnerRequires cookie*
 Title    Die Wechselwirkung von N 3F mit Lewis-Säuren und HF. N 3F als möglicher Vorläufer für die Synthese von N 3+-Salzen The Interaction of N 3F with Lewis-Acids and HF. N 3F as Possible Precursor for the Synthesis of N 3+ Salts  
 Abstract    Triazadienyl fluoride, N 3F, forms stable adducts with BF3 and AsF5 at low temperatures, as demonstrated by infrared measurements. The Lewis acids are bonded to the Na-atom of N 3F, as deduced from the data for 15N-isotopically enriched N 3F. The basicity of N 3F is comparable to that of ethine and ethene, according to the HF stretching frequency of the N 3F/HF complex isolated in an argon matrix. Despite the low NF bond energy (<150 kJ/mol), abstraction of the fluoride ion and formation of an N 3+ salt was not possible. The different behavior of N 3F and C1N3 towards Lewis acids is discussed. 
  Reference    Z. Naturforsch. 46b, 483—489 (1991); eingegangen am 3. September 1990 
  Published    1991 
  Keywords    Triazadienyl Fluoride, IR Spectra, Lewis Acids, Proton Affinity 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-0483.pdf 
 Identifier    ZNB-1991-46b-0483 
 Volume    46 
2Author    Rolf Minkwitz, Volker Gerhard, FrauRequires cookie*
 Title    Über Dimethylhaloniumsalze -CH3C1CH3+M F6 , CH3BrCH3+M F6 , CH3ICH3+MF6" -und Dimethylmethylendiiodoniumsalze CH3ICH2ICH32+(M F6 )2 (M = As, Sb)  
 Abstract    The dimethylhalonium salts (C H 3)2X +A~ (X = Cl, Br, I; A " = A sF 6-, SbF6~, Sb2F n ~) are synthesized by methylation o f the corresponding methylhalides C H 3X or dihalomethanes C H 2C12 and CH2Br2 in the system S 0 2/C H 3F /M F 5. The analogous reaction o f C H 2I2 results in the formation o f dimethylmethylendiiodonium hexafluorometallates C H 3IC H ,IC H 32+(M F 6")2 (M = As, Sb). The salts are characterized by Raman-, IR-and N M R-spectroscopy. 
  Reference    Z. Naturforsch. 46b, 561—5 (1991); eingegangen am 21. Juni 1990 
  Published    1991 
  Keywords    Preparation, Raman Spectra, IR Spectra, N M R Spectra 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-0561.pdf 
 Identifier    ZNB-1991-46b-0561 
 Volume    46 
3Author    R. Olf Minkwitz, VolkerG. ErhardRequires cookie*
 Title    Über die Reaktionen der Halogene Cl2, Br2 und I2 mit CH3O S O +M F6 (M = As, Sb)  
 Abstract    Chlorine reacts with C H 3O SO +M F6" (M = As, Sb) at 298 K to form AsC14 +A sF 6" and SbCl4 +Sb2Cl2F9~, respectively. The analogous reactions with bromine at 233 K result in the formation o f (C H 3)2 Br+A sF 6~ and Sb2F,,~. With iodine, the new methyliodonium salts (C H 3 I2)n"+(M F 6~)n (M = As, Sb) with yet unknown constitution are obtained. 
  Reference    Z. Naturforsch. 46b, 1470—1472 (1991); eingegangen am 11. März 1991 
  Published    1991 
  Keywords    Preparation, IR Spectra, N M R Spectra 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1470.pdf 
 Identifier    ZNB-1991-46b-1470 
 Volume    46 
4Author    M. Aria Maneva, M. Itko Georgiev, Norbert Lange, HeinzDieter LutzRequires cookie*
 Title    Zur Kenntnis von Berylliumiodat und -periodat - Röntgenographische, IR-und Raman-spektroskopische Untersuchungen On Beryllium Iodates and Periodates -X-Ray, IR , and R am an Studies  
 Abstract    Phase relationships and therm al decomposition of beryllium iodates and periodates were studied by X-ray and spectroscopic (IR, Ram an) measurements. B e(I03)2-4 H 20 , B e(I03)2, and Be(H4I 0 6)2-4 H 20 have been characterized. Be(H4I 0 6)2-4 H 20 (hitherto claimed in the lit­ erature to be a metaperiodate) dehydrates on heating with decomposition to form B e(I03)2. Anhydrous beryllium periodate was not obtained. On dehydration of B e(I0 3)2-4 H 20 , an­ hydrous B e(I03)2 is formed, which decomposes into BeO, I2, and 0 2 on further heating. 
  Reference    Z. Naturforsch. 46b, 795—799 (1991); eingegangen am 27. November 1990 
  Published    1991 
  Keywords    Iodates, Periodates, Beryllium, Decomposition, IR Spectra, Ram an Spectra 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-0795.pdf 
 Identifier    ZNB-1991-46b-0795 
 Volume    46 
5Author    Fluoro, Petra Neumann, K. Urt Dehnicke, Dieter Fenske, G.Erhard BaumRequires cookie*
 Title    Fluoro-, Chloro-und Bromo-Wolfram(VI)-Alkinkomplexe. Die Kristallstrukturen von [K(18-Krone-6)l[WF5( P h -C = C -H ) | * CH3CN und | WCl4( P h -C = C -S e -/ i -C 4H 9)(C H 3CN)|  
 Abstract    -, Chloro-, and Bromo-Tungsten(VI) Alkyne Complexes. The Crystal Structures of [K(18-Crown-6)][WF5(P h ~ C = C -H)] • C H 3CN and [WCl4(P h -C = C -S e -w -C 4 H9)(CH 3CN)] Several tungsten alkyne complexes o f the type [WC14(R -C = C -H) ] 2 and [WC14(R -C = C -R') ] 2 have been prepared by reactions o f WC16 with the alkynes in the presence o f C2C14. Treat­ ing with BrSiMe3 leads to corresponding bromo com plexes, whereas reactions o f N aF and KF, respectively, in acetonitrile solution in the presence o f crown ethers yield the fluoro complexes [N a(l 5-crown-5)][WFs(R -C = C -R ') ] and [K(18-crown-6)][W F5(R -C = C -R ') ] , respectively. All complexes were characterized by IR and l3C N M R spectroscopy. The crystal structures o f [K(18-crown-6)][W F5(P h -C = C -H) ] C H 3CN and [WCl4(P h -C = C -S e -« -C 4 H9)(C H 3C N)] have been determined by X-ray methods. [K(18-crown-6)][W F5(P h -C = C -H ] C H 3 CN: Space group P 2,, Z = 2, 8555 observed unique reflections, R = 0.034. Lattice dim ensions at -7 0 °C: a = 1199.4(3), b = 893.4(2), c = 1351.8(3) pm, ß = 109.73(3)°. The com pound forms ion pairs via three K -F contacts with bond lengths o f 262.0, 282.7, and 293.3 pm; the potassium ion is thus nine-fold coordinated by the six oxygen atoms o f the crown ether molecule and by three fluoride ligands. The alkyne ligand is bonded side on to the tungsten atom o f the [W F5(P h -C = C —H)] unit with WC bond lengths o f 202.4 and 202.6 pm, respectively. [WCl4(P h -C = C -S e -t t -C 4 H9)(C H 3C N)]: Space group P 2 Ja, Z = 4, 4595 observed unique reflections, R = 0.058. Lattice dim ensions at -7 0 °C: a = 1030.3(5), b = 1596.3(9), c = 1170.9(7) pm, ß = 104.28(3)°. The com pound has a molecular structure, in which the tungsten atom is seven-fold coordinated by four chloride ligands, by the two alkyne carbon atom s (WC bond lengths 200 and 203 pm), and in trans position to the latter by the nitrogen atom o f the acetonitrile molecule with a W -N bond length o f 226 pm. 
  Reference    Z. Naturforsch. 46b, 999—1010 (1991); eingegangen am 4. Februar 1991 
  Published    1991 
  Keywords    Tungsten Alkyne Complexes, Synthesis, IR Spectra, 13C N M R Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-0999.pdf 
 Identifier    ZNB-1991-46b-0999 
 Volume    46 
6Author    Alfred Zinn, Henning Von Arnim, Werner Massa, Michael Schäfer, Jürgen Pebler, K. Urt DehnickeRequires cookie*
 Title    [P h -C (  
 Abstract    N S iM e3)2]2FeO ; ein Amidinatokomplex von Eisen(III) mit verzerrt trigonal-bipyramidaler Struktur [P h -C (N S iM e3)2]2FeCl; an Amidinato Complex o flro n (III) with a Distorted Trigonal-Bipyramidal Structure The am idinato complex [P h -C (N S iM e3)2]2FeCl has been prepared by the reaction o f FeOCl with the amidine P h -C (N S iM e3)[N(SiM e3)2] in acetonitrile/THF in the form o f dark red m ois­ ture sensitive single crystals. The complex was characterized by IR spectroscopy, by its 57Fe-M össbauer spectra, as well as by an X-ray structure determination. Space group P i, Z = 2, 3180 observed unique reflections, R = 0.068. Lattice dimensions at -8 0 C: a = 1210.4(2), b = 1272.7(3), c = 1316.0(3) pm; a = 67.81(3)°, ß = 76.14(3)°, y = 67.19(3)°. The com plex has a molecular structure in which the iron atom is surrounded in a distorted trigonal-bipyramidal fashion with the chlorine ligand and two nitrogen atoms o f different amidinato chelates in equatorial positions. The remaining nitrogen atom s occupy the apical positions. 
  Reference    Z. Naturforsch. 46b, 1300 (1991); eingegangen am 28. Februar 1991 
  Published    1991 
  Keywords    Am idinato Complex o f Iron, Synthesis, IR Spectra, 57Fe M össbauer Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1300.pdf 
 Identifier    ZNB-1991-46b-1300 
 Volume    46