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101023-55-6

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Crystal structure and characterization of a novel acentric imidazolium analog [C3N2H5+][Br-]
A novel nonlinear optical crystal [C3N2H 5+][Br-] has been synthesized and characterized by a single-crystal X-ray diffraction, calorimetric, dilatometric and dielectric measurements. Above 200 K the crystal structure is polar, with symmetry R3. It consists of a highly disordered imidazolium cations and discrete Br- anions. The compound reveals a first order phase transition at 199/201 K (cooling/heating cycle) which leads to the monoclinic centrosymmetric space group P21/m. The exceptionally large increment of dielectric permittivity accompaning the structure transformation is related to the freezing of cation motions and a significant rebuilding of the anionic substructure.
Ggor,Piecha,Jakubas,Miniewicz
experimental part
p. 134 - 138
(2011/04/26)

KINETICS AND MECHANISM OF REACTION OF AMINES WITH β-BROMOPROPIOPHENONE
The reaction of β-bromopropiophenone with different amines in acetonitrile at 25 deg C was studied.It was found that in the case of primary and secondary amines, the end products of the reaction are β-aminopropiophenones, which form via the intermediate phenyl vinyl ketone.In the case of tertiary amines, the reaction ends at the stage of the formation of phenyl vinyl ketone.The reactivity of the amines in the formation of phenyl vinyl ketone is preferentially determined by their basicity.
Popov, A. F.,Piskunova, Z.,Matvienko, V. N.
p. 1299 - 1302
(2007/10/02)

Imidazolium salts
Novel quaternary imidazolium salts substituted on one nitrogen of the imidazolium cation with a EQU1 group in which each A is an aryl radical and B is an aliphatic, aryl-substituted aliphatic or aromatic radical, said salts being useful as antimicrobial agents.
-
(2008/06/13)

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Chemical Properties

Melting Point: 221°C(lit.)
Boiling Point: 237 °C(Press: 2 Torr)
Solubility:Soluble in water
PSA: 28.68000
LogP: 1.36780

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