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On the Structure .and Symmetry of the Phosphate Ions in Some Calcium Phosphates

B. Šoptrajatov ; Department of Chemistry, Faculty of Science, University· of Skopje, $kopje, .Macedonia, Yugoslavia
I. Petrov ; Department of Chemistry, Faculty of Science, University· of Skopje, $kopje, .Macedonia, Yugoslavia

Puni tekst: engleski, pdf (10 MB) str. 37-45 preuzimanja: 202* citiraj
APA 6th Edition
Šoptrajatov, B. i Petrov, I. (1967). On the Structure .and Symmetry of the Phosphate Ions in Some Calcium Phosphates. Croatica Chemica Acta, 39 (1), 37-45. Preuzeto s https://hrcak.srce.hr/208106
MLA 8th Edition
Šoptrajatov, B. i I. Petrov. "On the Structure .and Symmetry of the Phosphate Ions in Some Calcium Phosphates." Croatica Chemica Acta, vol. 39, br. 1, 1967, str. 37-45. https://hrcak.srce.hr/208106. Citirano 21.04.2021.
Chicago 17th Edition
Šoptrajatov, B. i I. Petrov. "On the Structure .and Symmetry of the Phosphate Ions in Some Calcium Phosphates." Croatica Chemica Acta 39, br. 1 (1967): 37-45. https://hrcak.srce.hr/208106
Harvard
Šoptrajatov, B., i Petrov, I. (1967). 'On the Structure .and Symmetry of the Phosphate Ions in Some Calcium Phosphates', Croatica Chemica Acta, 39(1), str. 37-45. Preuzeto s: https://hrcak.srce.hr/208106 (Datum pristupa: 21.04.2021.)
Vancouver
Šoptrajatov B, Petrov I. On the Structure .and Symmetry of the Phosphate Ions in Some Calcium Phosphates. Croatica Chemica Acta [Internet]. 1967 [pristupljeno 21.04.2021.];39(1):37-45. Dostupno na: https://hrcak.srce.hr/208106
IEEE
B. Šoptrajatov i I. Petrov, "On the Structure .and Symmetry of the Phosphate Ions in Some Calcium Phosphates", Croatica Chemica Acta, vol.39, br. 1, str. 37-45, 1967. [Online]. Dostupno na: https://hrcak.srce.hr/208106. [Citirano: 21.04.2021.]

Sažetak
The infrared Spectra, ·recorded at room-temperature and at
7711K, bf some calcium ' orthophosphates (anhydrous dicalcium .
phosphate, dicalcium phosphate dihydrate and octacalcium phosphate)
have been analysed, particularly with respect to the site
symmetry of the phosphate ions. .
Whereas ·the free phosphate ion exhibits Ta symmetry, C3v
symmetry could be expected for the hydrogen phosphate ion,
HPQ~.- . Ho'fever, in the solid state the site symmetry of the
phosphate ions of the analysed compounds is apreciably lowered
as inferred from the fact that the degeneracies of all vibrational
modes have been removed and all modes are infrared active. This
could correspond fo the Cs or Ci symmetry groups for which the
selection rules and · activities are identical. It was concluded that,
on the basis of the present information, it is not possible to distinguish
between these two symmetry groups.

Hrčak ID: 208106

URI
https://hrcak.srce.hr/208106

Posjeta: 248 *