Structure and properties of N -methyl- N -(4-pyridyl)-nitramine and 1,4-dihydro-1-methyl-4-nitriminopyridine

N-(3H-Thiazol-2-ylidene)nitramine andN-methyl-N-(thiazol-2-yl)nitramine

“…Within the pyridine series, we have observed some differences in the geometry of the ring and the NNO 2 group between nitramine and isomeric nitrimine (Kyzioø et al, 2002). In the present paper, we establish the structure of N-(thiazol-2-ylidene)nitramine to be (Ib) (see scheme and Fig.…”

“…as 1,4-dihydro-4-nitriminopyridine (Krygowski et al, 1996). IR spectroscopy indicates that the nitrimine form also prevails in solution (Kyzioø et al, 2002). The molecule of N-(thiazol-2-ylidene)nitramine, (I), also contains acidic (NHNO 2 ) and basic (ÐN ) centers and hence analogous tautomerism cannot be excluded.…”

An ab initio study on ethylenedinitramine and its monovalent ions

“…Krygowsky et al have claimed that, in the crystalline state pyridylnitramines exist in the nitrimino forms [21,22] whereas a detailed ab initio study of N-(2-pyridyl)-nitramine, contrary to the structural data, favors the nitramino form [21,22]. Keeping these literature data in mind, presently, various forms of EDNA have been screened for their relative stabilities.…”

Low-Temperature FTIR Spectroscopic and Theoretical Study on an Energetic Nitroimine: Dinitroammeline (DNAM)

“…On the other hand, the possibility of occurrence of nitramine-nitroimine tautomerism in DNAM upon changing the experimental conditions can also complicate the vibrational study of the compound. There are some reported works on compounds where nitramine-nitroimine tautomerism is virtually possible, such as nitrated derivatives of guanidine − and pyridine, − some nitrated heterocycles, − and phenylnitramines . Nevertheless, there were no previously reported relevant experimental and computational data that could provide much help to the spectroscopic characterization of DNAM.…”