Go toArchive
Browse byFacets
Bookbag ( 0 )
'N Trim ethylethylenediam ine' in keywords
Results  2 Items
Sorted by   
Publication Year
1992 (2)
1Author    ThomasK. Aukorat, Reinhard SchmutzlerRequires cookie*
 Title    N,N',N'-Trimethylethylendiamin-substituierte Phosphor(III)-Verbindungen und deren Oxidation zu Derivaten mit tetra-und pentakoordiniertem Phosphor N,N',N'-Trim ethylethylenediam ine-Substituted Phosphorus(III) Com pounds and their Oxidation to Derivatives with Four-and Five-Coordinated Phosphorus  
 Abstract    A study was made o f the intramolecular donor-acceptor interaction in N ,N',N'-trim ethyl-ethylenediamine-substituted phosphorus com pounds, involving A3-, A4-and A5-phosphorus atom s, as a function o f the nature o f the substituents at phosphorus. The reaction o f N-trim ethylsilyl-N,N',N'-trim ethylethylenediam ine (1) with (Pr'0)2PCl furnished the acyclic, trimethylethylenediamine-substituted phosphorus(III) compound 4. There is no N M R spec­ troscopic evidence for an intramolecular donor-acceptor interaction between the phosphorus atom and the nitrogen atom o f the dim ethylam ino group in 4. The oxidation o f the trivalent phosphorus atom in 4 and in the related com pound 5 by sulfur, selenium, tetrachloro-o-benzoquinone, and hexafluoroacetone led to the corresponding A4P com pounds 6 -9 and to the A5P com pounds 10 and 11. N o intramolecular donor-acceptor interaction could be detected in any o f these products. There was no reaction between 5 and elemental tellurium. The reac­ tion products were characterized by N M R spectroscopy, mass spectrometry, and by elemental analysis. 
  Reference    Z. Naturforsch. 47b, 275 (1992); eingegangen am 29. August 1991 
  Published    1992 
  Keywords    N, N', N'-Trim ethylethylenediam ine, D o n o r-Acceptor Interaction, Oxidizing Agents, N M R Spectra, M ass Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-0275.pdf 
 Identifier    ZNB-1992-47b-0275 
 Volume    47 
2Author    Thom As, K. Aukorat, PeterG. Jones, Reinhard SchmutzlerRequires cookie*
 Title    Das 7,8-Benzo-5-chloro-1,4,4-trimethyl-l-aza-4-azonia-6,9-dioxa-5 A5-phospha- spiro[4.4]nonanyl-Kation: Röntgenstrukturanalyse und temperaturabhängige ^ -N M R -Spektren4]nonanyl Cation: X-Ray Crystal Structure Determination and Variable 'H NMR Spectra  
 Abstract    The 7,8-Benzo-5-chloro-1,4,4-trimethyl-1 -aza-4-azonia-6,9-dioxa-5/l5-phosphaspiro[4. The 'H N M R spectrum o f the spirophosphorane 3 at room temperature indicates dynamic behaviour o f the cation. The low-temperature 'H N M R spectra o f 3 exhibit two sets o f dou­ blets for the protons o f the diastereotopic N (C H 3)2 groups. The free enthalpy o f activation for the dynamic process was determined (58.6 KJ/mole). In the reaction o f 3 with sodium tetra-phenylborate the crystalline com pound, 4, involving the non-coordinating anion, [B(C6H 5)4]~, was obtained. The X-ray crystal structure analysis o f 4 reveals the presence o f a five-membered ring, formally as a result o f intramolecular donor-acceptor interaction between the nitrogen atom o f the N (C H 3)2 group and phosphorus. The geometry at phosphorus deviates som ewhat from ideal trigonal bipyramidal. 
  Reference    Z. Naturforsch. 47b, 755 (1992); eingegangen am 9. September 1991 
  Published    1992 
  Keywords    N, N', N'-Trim ethylethylenediam ine, A zonium Salt, Donor-Acceptor-Interaction, Temperature-Dependent N M R Spectra, X-Ray Crystal Structure 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-0755.pdf 
 Identifier    ZNB-1992-47b-0755 
 Volume    47