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Structure and IR Spectra of Protonated 1,8-Bis(dimethylamino)naphthalene Proton Sponge

B. Brzeziñski ; Faculty of Chemistry, A. Mickiewicz University, 60-780 Poznah, Poland
T. Gtowiak ; Institute of Chemistry, University of Wroclaw, 50-383 Wroclaw, Poland
E. Grech ; Institute of Fundamental Chemistry, Technical University, 71-065 Szczecin, Poland
Z. Malarski ; Institute of Chemistry, University of Wroclaw, 50-383 Wroclaw, Poland
L. Sobczyk ; Institute of Chemistry, University of Wroclaw, 50-383 Wroclaw, Poland

Puni tekst: engleski, pdf (19 MB) str. 101-108 preuzimanja: 147* citiraj
APA 6th Edition
Brzeziñski, B., Gtowiak, T., Grech, E., Malarski, Z. i Sobczyk, L. (1992). Structure and IR Spectra of Protonated 1,8-Bis(dimethylamino)naphthalene Proton Sponge. Croatica Chemica Acta, 65 (1), 101-108. Preuzeto s https://hrcak.srce.hr/137260
MLA 8th Edition
Brzeziñski, B., et al. "Structure and IR Spectra of Protonated 1,8-Bis(dimethylamino)naphthalene Proton Sponge." Croatica Chemica Acta, vol. 65, br. 1, 1992, str. 101-108. https://hrcak.srce.hr/137260. Citirano 26.02.2021.
Chicago 17th Edition
Brzeziñski, B., T. Gtowiak, E. Grech, Z. Malarski i L. Sobczyk. "Structure and IR Spectra of Protonated 1,8-Bis(dimethylamino)naphthalene Proton Sponge." Croatica Chemica Acta 65, br. 1 (1992): 101-108. https://hrcak.srce.hr/137260
Harvard
Brzeziñski, B., et al. (1992). 'Structure and IR Spectra of Protonated 1,8-Bis(dimethylamino)naphthalene Proton Sponge', Croatica Chemica Acta, 65(1), str. 101-108. Preuzeto s: https://hrcak.srce.hr/137260 (Datum pristupa: 26.02.2021.)
Vancouver
Brzeziñski B, Gtowiak T, Grech E, Malarski Z, Sobczyk L. Structure and IR Spectra of Protonated 1,8-Bis(dimethylamino)naphthalene Proton Sponge. Croatica Chemica Acta [Internet]. 1992 [pristupljeno 26.02.2021.];65(1):101-108. Dostupno na: https://hrcak.srce.hr/137260
IEEE
B. Brzeziñski, T. Gtowiak, E. Grech, Z. Malarski i L. Sobczyk, "Structure and IR Spectra of Protonated 1,8-Bis(dimethylamino)naphthalene Proton Sponge", Croatica Chemica Acta, vol.65, br. 1, str. 101-108, 1992. [Online]. Dostupno na: https://hrcak.srce.hr/137260. [Citirano: 26.02.2021.]

Sažetak
A review of X-ray diffraction studies (including those not published so far) on a number of salts composed of l,8-bis(dimethylamino)naphthalene (DMAN) and various proton donors is presented. The symmetry of intramolecular NHN+ bridges in protonated DMAN changes depending on the counteranion and the resulting lattice potential in the neighbourhood of a bridge. Symmetrical NHN+ bridges in solid protonated DMAN arc characterized by a low frequency v(NHN) stretching vibration at about 500-000 cm-1. The symmcüy causes a broadening and some diminishing of integrated intensity of the band and a shift of its centre of gravity towards higher frequencies. In some cases, an additional absorption at about 2000 cm-1 appears. Quite differently behave the protonated DMAN species in acetonitrile solution. In all cases, the so called continue appear, extending between 200-3000 cm-1. In the case of moderately strong proton donors (both for OH and N-N acids) complicated ionic equilibria arc evidenced, in which protonated DMAN.H + cations, free molecules of DMAN and homoconjugated OHO" or NHN" anions participate.

Hrčak ID: 137260

URI
https://hrcak.srce.hr/137260

Posjeta: 267 *