Amination of tetrazoles with hydroxylamine-O-sulfonic acid: 1- and 2-aminotetrazoles

1969 ◽  
Vol 47 (19) ◽  
pp. 3677-3681 ◽  
Author(s):  
R. Raap
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Aqueous Solutions ◽  
Sulfonic Acid ◽  
Weakly Alkaline ◽  
Nuclear Magnetic Resonance Spectra ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

1-Aminotetrazoles and 2-aminotetrazoles can be prepared by reacting tetrazoles with hydroxylamine-O-sulfonic acid in weakly alkaline aqueous solutions. The nuclear magnetic resonance spectra and some of the properties of these aminotetrazoles are described.

11B—NMR- spektroskopische Untersuchungen an wäßrigen Polyboratlösungen / 11B NMR Spectroscopic Studies on Aqueous Polyborate Solutions

1979 ◽  
Vol 34 (8) ◽  
pp. 1078-1083 ◽  
Author(s):  
Ralf Janda ◽  
Gert Heller
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Aqueous Solutions ◽  
Nmr Spectra ◽  
Spectroscopic Studies ◽  
Sodium Potassium ◽  
Nuclear Magnetic Resonance Spectra ◽  
11B Nmr ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The 11B nuclear magnetic resonance spectra of sodium, potassium and ammonium polyborates in aqueous solutions, - as a function of concentration and pH - , provide information of the hydrolysis equilibria. Two 11B NMR lines are observed in aqueous solutions of Na[B5O6(OH)4], K[B5O6(OH)4] and NH4[B5O6(OH)4]. Only one 11B NMR line is recorded in aqueous solutions of (NH4)2[B4O5(OH)4] and Na2[B4O5(OH)4]. The results of the 11B NMR spectra are discussed and compared with the results obtained from Raman studies of aqueous polyborate solutions

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