Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 129 (1996), S. 653-656 
    ISSN: 0009-2940
    Keywords: Hydroxylamine, O-methyl-N,N-bis(trifluoromethyl)-, gas-phase structure of ; Electron diffraction ; Calculations, ab initio ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The molecular structure of (CF3)2NOCH3 was determined by gas electron diffraction. The molecular intensities were reproduced by use of a single conformation with syn orientation of the O-CH3 group relative to the nitrogen lone pair. This was confirmed by ab initio calculations (HF/3-21G(*), polarization functions only on nitrogen, and MP2/6-31G*). The observed structure demonstrates that the generalized anomeric effect is of minor importance to this compound. The following skeletal geometric parameters (bond lengths [pm] and angles [°] with 3-s̰ uncertainties) were derived: N-C 142.9(7), N-O 142(3), O-C 145(3), CNC 118.0(9), CNO 108.1(17), and NOC 109.4(17). The experimental structure is well reproduced by the ab initio calculations.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 1749-1755 
    ISSN: 0044-2313
    Keywords: Tetramethylammonium trifluormethoxytrifluormethyliodate(I) ; Tetramethylammonium fluorotrifluormethyliodate(I) ; Tetramethylammonium chlorotrifluormethyliodate(I) ; Tetramethylammonium bromotrifluormethyliodate(I) ; vibrational spectra ; 19F13C NMR ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation of Trifluormethylhalogen Iodate(I) Salts (CH3)4N+CF3IX- (X = F, Cl, Br) and Trifluormethyltrifluormethoxy Iodate(I) (CH3)4N+CF3IOCF3-We describe the preparation of new trifluormethyliodate(I) salts CF3IX- (X = F, Cl, Br, OCF3). (CH3)4N+CF3ICl- and (CH3)4N+CF3IBr- are obtained via addition of CF3I with the corresponded tetramethylammonium halogenide. (CH3)4N+CF3IOCF3- is synthesized by comproportionation of (CH3)4N+CF3ICl- with CF3OCl under formation of Cl2 at -78°C. (CH3)4N+CF3IF- is formed either, through thermolysis of (CH3)4N+ CF3IOCF3- under separation of COF2, or reaction of CF3I with (CH3)4N+ OCF3-. The thermolabile compounds have been characterized by i.r., Raman, 19F-, 13C NMR spectroscopy.
    Notes: Es wird über die Darstellung einer Reihe neuer Iodate(I) des Typs CF3IX- (X = F, Cl, Br, OCF3) berichtet. (CH3)4N+CF3ICl- und (CH3)4N+CF3IBr- werden durch Additionsreaktion von CF3I an die entsprechenden Tetramethylammoniumhalogenide dargestellt. (CH3)4N+CF3IOCF3- erhält man durch Komproportionierung von (CH3)4N+CF3ICl- mit CF3OCl bei -78°C. CF3IF- entsteht sowohl, durch die Thermolyse von (CH3)4N+ CF3IOCF3- unter Abspaltung von COF2 bei -20°C, als auch durch Umsetzung von CF3I mit (CH3)4N+OCF3- bei -20°C.Die thermolabilen Verbindungen werden durch IR-, Raman-sowie Multikern-NMR-Spektroskopie charakterisiert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 487-490 
    ISSN: 0044-2313
    Keywords: Tetramethylammonium bistrifluormethoxybromate(I) ; vibrational spectra ; 19F ; 13C NMR ; mass spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation of Tetramethylammonium Bistrifluormethoxybromate(I) (CH3)4N+Br(CF3O)2-We describe the preparation and characterization of (CH3)4N+Br(CF3O)2-. It is prepared via comproportionation of CF3OCl with (CH3)4N+BrCl2- under formation of Cl2 at -70°C, respectively via addition elimination reaction of CF3OCl with (CH3)4N+Br- at -70°C. The thermolabile salt is characterized by i.r., Raman, 19F, 13C NMR and mass spectroscopy.
    Notes: Es wird über die Darstellung und Charakterisierung von (CH3)4N+Br(CF3O)2- berichtet. (CH3)4N+Br(CF3O)2- erhält man sowohl durch Komproportionierung von CF3OCl mit (CH3)4N+BrCl2- bei -70°C unter Bildung von elementarem Chlor, als auch über die Additions-Eliminierungsreaktion von CF3OCI mit (CH3)4N+Br bei-70°C. Die thermolabile Verbindung wird durch IR-, Raman-, 19F-, 13C-NMR sowie Massenspektroskopie charakterisiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 1727-1730 
    ISSN: 0044-2313
    Keywords: Trifluormethyliodinechloridefluoride ; vibrational spectra ; 19F NMR spectra ; mass spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chlorofluorinate with Trifluoromethylhypochlorite CF3OCl. Preparation and Spectroscopic Characterization of Trifluormethyliodinechloridefluoride CF3I(Cl)FThe preparation of a new iodine(III) compound, trifluormethyliodinechloridefluoride CF3I(Cl)F, via oxidative addition of trifluoromethylhypochlorite CF3OCl to trifluoromethyliodide CF3I is described. The thermolabile compound has been characterized by i.r., Raman, 19F NMR, and mass spectroscopy.
    Notes: Die Darstellung einer neuen Iod(III)-Verbindung, Trifluormethyliodchloridfluorid CF3I(Cl)F durch oxidative Addition von Trifluormethylhypochlorit CF3OCl an Trifluormethyliodid CF3I, wird mitgeteilt. Die thermolabile Verbindung wird durch IR-, Raman-, 19F-NMR- sowie Massenspektroskopie charakterisiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 0044-2313
    Keywords: N,N-Dichloromethylsulfonammonium salts ; crystal structure of CH3S(O)2NCl2 ; vibrational spectra ; 1H ; 13C ; 19F NMR ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New N,N-Dichloromethylsulfonammonium Salts CH3S(O)2NCl2X+MF6- (X = CH3, Cl, F; M = As, Sb) and Crystal Structure of CH3S(O)2NCl2The preparations of new dichlorammonium salts CH3S(O)2NCl2X+MF6- (X = CH3, Cl, F; M = As, Sb) and of CH3S(O)2NCl2 by oxidative halogenation respectively methylation are reported. The thermolabil compounds are characterized by IR, Raman, 1H, 13C, 19F NMR spectroscopy. N,N-Dichlormethylsulfonamid CH3S(O)2NCl2 crystallizes at 173(1) K in the orthorhombic space group Pnma with a = 615.1(3) pm, b = 937.3(5) pm, c = 970.3(5) pm and Z = 4.
    Notes: Die Darstellung einer Reihe von Dichlor ammoniumsalzen des Typs CH3S(O)2NCl2X+MF6- (X = CH3, Cl, F; M = As, Sb) wird angegeben. Die Salze werden durch oxidative Halogenierung bzw. Methylierung von CH3S(O)2NCl2 erhalten. Die Charakterisierung der thermolabilen Verbindungen erfolgte mittels IR-, Raman-sowie Multikern-NMR-Spektroskopie. Die Einkristallröntgenstrukturanalyse von N,N-Dichlormethylsulfonamid CH3S(O)2NCl2 bei 173(1) K ergab: orthorhombische Raum gruppe Pnma mit a = 615,1(3) pm, b = 937,3(5) pm, c = 970,3(5) pm und Z = 4.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 1404-1410 
    ISSN: 0044-2313
    Keywords: Dihydroxycarbeniumion ; crystal structure ; vibrational spectra ; NMR-spectra ; superacid reaction ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Dihydroxycarbeniumhexafluorometallates - Synthesis, Spectroscopic Characterization, and Crystal Structure of HC(OH)2+AsF6-The preparation of HC(OH)2+ MF6- (M = As, Sb) by protonation of HCOOH in the superacid systems HF/MF5 is reported. The very hydrolysable and thermolabile salts are characterized by vibrational and NMR spectroscopic methods. Under inert conditions they are stable at -40°C for some weeks. HC(OH)2+AsF6- crystallizes in the orthorhombic space group Pbca (No. 61) with a = 965.8(1), b = 1582.20(16), c = 766.40(8) pm with eight formula units per unit cell.
    Notes: Es wird über die Darstellung von HC(OH)2+MF6- (M = As, Sb) durch Protonierung von Ameisensäure in den supersauren Systemen HF/MF5 berichtet. Die hydrolyseempfindlichen und thermolabilen Dihydroxycarbeniumsalze werden schwingungs- und NMR-spektroskopisch charakterisiert. Sie sind unter inerten Bedingungen bei -40°C wochenlang haltbar.HC(OH)2+AsF6- kristallisiert in der orthorhombischen Raumgruppe Pbca (Nr. 61) mit den Gitterkonstanten a = 965,8(1), b = 1582,20(16) und c = 766,40(8) pm mit acht Formeleinheiten in der Elementarzelle.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 0044-2313
    Keywords: Chlorine trifluoromethyloxonium-, chlorine methyloxonium hexafluoroantimonate and -arsenate ; vibrational, nmr, mass spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Reactions of CH3OCl, CF3OCl, CF3OF, and CF3OH with the Superacid System HF/MF5 (M = As, Sb). Preparation and Characterization of CH3OCl(H)+MF6- and CF3OCl(H)+MF6-The preparation of the chlorine oxoniumsalts CH3OCl(H)+MF6- and CF3OCl(H)+MF6- by protonation of CH3OCl and CF3OCl in the superacid solution of HF/MF5 (M = As, Sb) is described. However CF3OF and CF3OH have not been protonated under the same conditions. In the case of CF3OH the formation of F2CO · MF5 is observed. The novel compounds are characterized by nmr- and vibrational spectroscopy.
    Notes: Es wird über die Darstellung der Chloroxoniumsalze CH3OCl(H)+MF6- und CF3OCl(H)+MF6- durch Protonierung von CH3OCl und CF3OCl in dem supersauren System HF/MF5 (M = As, Sb) berichtet. Dagegen lassen sich CF3OF und CF3OH bei gleichen Bedingungen nicht protonieren. CF3OH bildet in supersaurer Lösung die Addukte F2CO · MF5. Die Charakterisierung aller neuen Verbindungen erfolgt NMR- und schwingungsspektroskopisch.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 557-561 
    ISSN: 0044-2313
    Keywords: Thiosulfonium salts ; preparation ; vibrational, NMR spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Preparation of Di(i-propyl)thiosulfonium Salts [1]The preparation of the mercaptosulfonium salts (i-C3H7)2SSX+SbCl6- (X = H, D) and of the chlorothiosulfonium salts (i-C3H7)2SSCl+MF6- (M = As, Sb) and (i-C3H7)2SSSCl+SbCl6- is reported. They are formed by reaction of chlorinated or protonated (i-C3H7)2S with excess H2S or SCl2 and S2Cl2. The thiosulfonium compounds are characterized by vibrational and NMR spectroscopic methods.
    Notes: Es wird über die Darstellung der Mercaptosulfoniumsalze (i-C3H7)2SSX+SbCl6- (X = H, D) und der Chlorthiosulfoniumsalze (i-C3H7)2SSCl+MF6- (M = As, Sb) und (i-C3H7)2SSSCl+SbCl6- berichtet. Sie werden aus chloriertem oder protoniertem (i-C3H7)2S durch Kondensationsraktionen mit überschüssigem H2S oder SCl2 und S2Cl2 gebildet. Die Charakterisierung der Thiosulfoniumverbindungen erfolgt schwingungs- und NMR-spektroskopisch.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    ISSN: 0044-2313
    Keywords: Chlorine Nitrate ; Tetramethylammoniumtrifluoromethylnitratoiodate(I) ; (CH3)4N+CF3IONO2- ; vibrational spectra ; Halogen Nitrates ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Formation and Spectroscopic Characterization of Tetramethylammoniumtrifluoromethylnitratoiodate(I) (CH3)4N+CF3IONO2-(CH3)4N+CF3ICI- reacts with CIONO2 to (CH3)4N +CF3IONO2-. The salt is characterized by vibrational spectra.
    Notes: (CH3)4N+CF3ICI- reagiert mit ClONO2 unter Chlorkomproportionierung zu (CH3)4N+CF3IONO2-. Das erhaltene Salz wird schwingungsspektroskopisch charakterisiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 0044-2313
    Keywords: Tetramethylammoniurn bistrifluoromethylnitrate ; tetramethylammonium trifluoromethylbistrifluoromethylnitroxyliodate(I) ; bistrifluorometylnitroxyde ; vibrational spectra ; 19F, 13C NMR ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Preparation of Tetramethylammonium Trifluoromethylbistritluoromethylnitroxyliodate(I) (CH3)4N+(CF3)2NOICF3- and the Reaction of Tetramethylammonium Bistrifluoromethylnitrate (CH3)4N+(CF3)2NO- with Cl2 and ClONO2The preparation of (CF3)2NO- as tetramethylammoniumsalt and its addition reaction with CF3I are described. The formed Tetramethylammonium trifluoromethylbistrifluoromethylnitroxyliodate(I) (CH3)4N+(CF3)2NOICF3 is characterized by its spectra and the reaction with CF3OCl.In addition we present our approach to the preparation of (CF3)2NOCl by the reaction of (CH3)4N+(CF3)2NO- with Cl2 and ClONO2The thermolabile compounds have been characterized by i.r., Raman, 19F and 13C NMR spectra.
    Notes: Es wird über die Darstellung von (CF3)2NO- als Tetramethylammoniumsalz und seiner Additionsreaktion mit CF3I berichtet. Das auf diesem Wege dargestellte Tetramethylammonium-Trifluormethylbistrifluormethylnitroxyliodat(I) (CH3)4N+(CF3)2NOICF3- wird spektroskopisch und durch die Reaktion mit CF3OCI charaklerisiert.Weiterhin werden Versuche zur Darstellung von (CF3)2NOC1 durch die Reaktion von (CH3)4N+(CF3)2NO mit Cl2 und ClONO2 vorgestellt.Die zum Teil thermolabilen Verbindungen werden durch IR-, Raman- sowie Multikern-NMR-Spektroskopie charakterisiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...