Vibrational spectra of α‐CaNa 2 P 2 O 7  · 4H 2 O, CaNH 4 NaP 2 O 7  · 3H 2 O and CdNH 4 NaP 2 O 7  · 3H 2 O | Zendy

Joe I. Hubert | Zendy; Aruldhas G. | Zendy; Keresztury Gabor | Zendy

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Vibrational spectra of α‐CaNa 2 P 2 O 7 · 4H 2 O, CaNH 4 NaP 2 O 7 · 3H 2 O and CdNH 4 NaP 2 O 7 · 3H 2 O

Author(s) -

Joe I. Hubert,

Aruldhas G.,

Keresztury Gabor

Publication year - 1991

Publication title -

journal of raman spectroscopy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.748

H-Index - 110

eISSN - 1097-4555

pISSN - 0377-0486

DOI - 10.1002/jrs.1250220913

Subject(s) - raman spectroscopy , chemistry , ion , nap , analytical chemistry (journal) , crystallography , spectral line , physics , organic chemistry , astronomy , chromatography , neuroscience , optics , biology

The IR and Raman spectra of polycrystalline samples of α‐CaNa 2 P 2 O 7 · 4H 2 O, CaNH 4 NaP 2 O 7 · 3H 2 O and CdNH 4 NaP 2 O 7 · 3H 2 O were recorded and analysed. Vibrational bands due to NH 4 + , P 2 O 7 4− and H 2 O are identified. The POP bridge angle is found to be about 129° and the pyrophosphate ion is non‐centrosymmetric. The NH 4 + ion is likely to be rotating freely in the componds XNH 4 NaP 2 O 7 · 3H 2 O (X = Ca, Cd).

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