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'NMR spectra' in keywords Facet   Publication Year 1996  [X]
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1996[X]
1Author    JosephG. Robe, Duc Le Van, JostW. Innemöller, Bernt Krebs, M. Echtild LägeRequires cookie*
 Title    Reaktive E=C(p-p)7r-Systeme, XLIII [1] Darstellung und Charakterisierung P-Phosphino-oder P-Arsino-substituierter Fluorphosphaalkene des Typs R2E-P=C(F)NEt2 (R = Me, CF3, Me2N; E = P, As)  
 Abstract    Reactive E=C(p-p)-7r System s XLIII [1] Synthesis and Characterization o f P -Phosphino or P-A rsino Substituted Fluoro-phosphaalkenes of the Type R 2E -P=C (F)N Et2 (R = Me, C F 3, M e7N; E = R As) The easily accessible phosphaalkene HP=C(F)NEt2 (lb) reacts with halophosphanes or -arsanes R2EX (X = Cl, I) in the presence of NEt3 to give P-phosphino-or -P-arsino sub­ stituted fluorophosphaalkenes of the type RiE-P=C(F)NEti (2 -6) in high yields (60 -85 %) [R2E: (CF3)2P (2), Me2N(CF3)P (3), Me2P (4), (CF3)2As (5), M e2As (6)]. The analogous re-action of ib with CF3PI2 (molar ratio 1:2) unexpectedly leads to the triphosphetene Et2N 
  Reference    Z. Naturforsch. 51b, 778—784 (1996); eingegangen am 30. November 1995 
  Published    1996 
  Keywords    Phosphaalkenes, 1, 2, 3-Triphosphetenes, NMR Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0778.pdf 
 Identifier    ZNB-1996-51b-0778 
 Volume    51 
2Author    Max Herberhold, E. Bertholdt, WolfgangM. Iliu, BerndW. RackmeyerRequires cookie*
 Title    N-Functionalization of the Tetrahedrane Fe2(CO)6(/z-SNH)  
 Abstract    The azadiferrathia tetrahedrane, Fe2(CO)6(£/-SNH) (1), was deprotonated to give the anion [Fe2(CO)6(/J-SN)]_ (2) which reacts with halides of phosphorus, arsenic, silicon, germanium, tin and boron by formation of element-nitrosen bonds. The new compounds were characterized by their IR. N M R ('H , mB, i3C, i5N, 29S i,3 P, m S n)and mass spectra. The molecular structure of [Fe2(CO)6(A/-SN-SiMe2CH2-)]2 (11) was determined by X-ray structure analysis (space group P i; triclinic; a = 799.8(2), b = 958.5(2), c = 1035.7(2) pm, a = 86.30(2)°, (3 = 81.27(2)°, 7 = 69.90(2)°). 
  Reference    Z. Naturforsch. 51b, 1283—1289 (1996); received March 27 1996 
  Published    1996 
  Keywords    Azadiferrathia, Tetrahedrane, Cluster Anion, Element-Nitrogen Bonds, NMR Spectra 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1283.pdf 
 Identifier    ZNB-1996-51b-1283 
 Volume    51 
3Author    FredR. Oschea, G. Ernot, H. Eckm, Anna, FrankW. Ellerb, Ekkehard Fluck0Requires cookie*
 Title    Ein neuer Heterocyclus  
 Abstract    , 2A3,4A5-[l,2,4]-O xadiphosphinin (2), als Ligand eines zw eikernigen Eisenkom plexes A New H eterocycle, 2A3,4A5-[l,2,4]-O xadiphosphinine (2), as L igand o f a Binuclear Iron C om plex Preparation and properties of a coordination compound are described, in which a carbonyl group in bis[(dicarbonyl)(/;;i-cyclopentadienyl)iron] is substituted by hitherto unknown octa-Af-methyl-2A',4A:i-[l,2,4]-oxadiphosphinine-2,4,4,6-tetramine (2). The 'H , '1P, and l3C NMR spectra are recorded and discussed in detail. The molecular structure of the iron complex 4 is described and interpreted. 
  Reference    Z. Naturforsch. 51b, 1725—1731 (1996); eingegangen am 27. Juni 1996 
  Published    1996 
  Keywords    [l, 2, 4]-Oxadiphosphinine, Binuclear Iron Complex, NMR Spectra, X-Ray 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1725.pdf 
 Identifier    ZNB-1996-51b-1725 
 Volume    51 
4Author    Takashi Ohno, Yutaka Kishimoto, Tatsuo Kanashiro, Mitsuhiro Miyamoto, Toshio Tanaka, Kazuo MiyataniRequires cookie*
 Title    Change in 51 V Relaxation Rates due to CDW in CuV 2 S 4  
 Abstract    The temperature variations of the 63 Cu, 65 Cu and 51 V NMR spectra and 51 V spin-lattice relaxation rate 1/T have been measured in a thiospinel CuV 2 S 4 . Drastic changes in the spectra and relaxation rates were observed at the charge density wave (CDW) transition temperature. With decreasing temperature T, 1 /Ti decreases exponentially due to the CDW transition (75 K < T< 90 K). The energy gap made by the CDW formation at 90 K is estimated to be 0.052 eV from an Arrhenius plot of 1/Tj. 
  Reference    Z. Naturforsch. 51a, 773—776 (1996); received April 2 1996 
  Published    1996 
  Keywords    CuV 2 S 4, charge density wave (CDW), NMR spectra, spin-lattice relaxation rate, energy gap- 
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 TEI-XML for    default:Reihe_A/51/ZNA-1996-51a-0773.pdf 
 Identifier    ZNA-1996-51a-0773 
 Volume    51 
5Author    VasilyRequires cookie*
 Title    Chemistry of the l,3>5-Triaza-2-phosphorin-4,6-diones, Part XII*. Synthesis and Characterization of 2-PhenyI-2-(/?-tolylthio)-l,3?5- trimethyI-l,3,5-triaza-4,6-dione-2-phosphorinonium Salts  
 Abstract    A . P in ch u k , Io n N e d a , C h ristian M üller, H o lg e r T h ö n n e ss e n , P e te r G. Jones, R e in h a rd S chm utzler The reaction of l,5-bis(trimethylsilyl)-l,3.5-trimethylbiuret (1) with/M olylsulfenyl chloride (2) furnished l-(/?-tolylthio)-5-trimethylsilyl-l,3,5-trimethylbiuret (3). In the reaction of 3 with phenyldichlorophosphine, 2-phenyl-2-(/?-tolylthio)-l,3,5-trimethyl-l,3,5-triaza-4,6-dione-2-phosphorinonium chloride (4) was formed. The same product was obtained from the reac­ tion of 2-phenyl-l,3,5-trimethyl-l,3,5-triaza-2/.3-phosphorin-4,6-dione (6) with p-tolylsulfenyl chloride (2). Compound 4 was isolated and characterized in the form of the hexachloroanti-m onate (4a). The spirophosphorane 2-phenyl-l,3,5-trimethyl-l,3,5-triaza-7,10-dioxa-8,9-perchlorobenzo-2As-phosphaspiro-[4.5]decan-4,6-dione (7) was prepared by the reaction of 4 with tetrachloroorthobenzoquinone. The new products were characterized by 'H -and 13C NMR spectroscopy, elemental analysis, 31P NMR spectroscopy in the case of 4a. 6 and 7, and mass spectrometry (4a). Single-crystal X-ray structural analyses of compounds 4a and 7 were conducted. The phosphorus atom of 4a has the expected tetrahedral geometry, with a rather short P-S bond of 204.9(2) pm. In 7 the geometry at phosphorus is almost ideal trigonal bipyramidal. Weak hydrogen bonds are formed from a C (:0) group to deuterochloroform of solvation. 
  Reference    Z. Naturforsch. 51b, 1494—1500 (1996); received February 13 1996 
  Published    1996 
  Keywords    1, 3, 5-Trimethyl-Substituted 1, 3, 5-Triaza-4, 6-dione-2-phosphorinonium Derivatives, Intram olecular Rearrangem ent, NMR Spectra, X-Ray 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1494.pdf 
 Identifier    ZNB-1996-51b-1494 
 Volume    51