Infrared absorption spectra of inorganic solids—III Selenates and selenites

Sathianandan, K.; McCory, L. D.; Margrave, John L.

doi:10.1016/0371-1951(64)80096-5

Cited by 69 publications

(29 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…No minerals with the selenate ion SeO 4 2-have been discovered and reported 34 . The infrared spectra of CuSeO 3 .2H 2 O has been reported by Sathinadan et al 35 and Makutan et al 36 . Farmer reports that the band positions of selenates are readily distinguished from that of selenites.…”

Section: Resultsmentioning

confidence: 99%

Raman spectroscopic study of the selenite minerals—chalcomenite CuSeO₃·2H₂O, clinochalcomenite and cobaltomenite

Frost

Keeffe

2008

J Raman Spectroscopy

View full text Add to dashboard Cite

Raman spectroscopy has been used to study the dimorphous selenite minerals chalcomenite, cobaltomenite and clinochalcomenite. Selenite minerals are characterised by the position of the symmetric stretching mode which is observed at higher wavenumbers than the antisymmetric stretching mode. The selenite ion has C 3v symmetry and four modes, 2A 1 and 2E. These modes are observed at 813, 472 cm -1 (A 1 ) and 685, 710, 727 and 367 and 396 cm -1 (E). Bands assigned to the water stretching vibrations are observed for chalcomenite at 2953, 3184 and 3506 cm -1 and for clinochalcomenite at 2909, 3193 and 3507 cm -1 . A comparison of the Raman spectra of chalcomenite, clinochalcomenite and cobaltomenite is made. The position of these bands enabled hydrogen bond distances in the selenite structure to be estimated. Hydrogen bond distances for chalcomenite and clinochalmenite were determined to be similar.

show abstract

Section: Resultsmentioning

confidence: 99%

Raman spectroscopic study of the selenite minerals—chalcomenite CuSeO₃·2H₂O, clinochalcomenite and cobaltomenite

Frost

Keeffe

2008

J Raman Spectroscopy

View full text Add to dashboard Cite

show abstract

“…Lead and cadmium selenites showed 1.10 and 2.00% increase, respectively. Sathianandan et al [6] also observed a strong affinity of cadmium selenite for water.…”

Section: Effect Of Moisturementioning

confidence: 88%

“…And M-O-Se bands at and around 515 and 958 cm-! also support [6] the coordination through oxygen. Bands around 1620, 2300, 2900 and 3400 cm -1 have been assigned [6, t3, 14] to 6H20, v(O-H) (H20), hydrogen bonding and v(O-H) (HaO)~ respectively.…”

Section: (Vw)mentioning

confidence: 93%

See 1 more Smart Citation

Thermal and other studies on bivalent metal selenltes

Verma¹,

Khushu²

1989

Journal of Thermal Analysis

View full text Add to dashboard Cite

BaSeO3-Z5H~O(I); PbSeO 3.2HzO(ll ) and CdSeO~-3.5H20(III ) were prepared and analysed. Their hygr0sCopicity and Solubility was investigated. These compounds have high thermai Stability, as shown by their TG and DTA data. IR spectra show multi-dentate coordination of selenite to cations, due to considerable splitting of the asymmetric v3 and v4 bands of SeO32 -in the 780-730 cm ~ t and 420-325 cm-~ region.Tentative structures have been proposed involving bridging oxygen atoms.

show abstract

“…Each of these minerals has two anionic groups: selenate and selenite (schmiederite), selenate and sulfate (olsacherite), and selenate and iodate (carlosruizite). 30 The infrared spectra of CuSeO Ð 3 2H 2 O has been reported by Sathianandan et al 31 and Makutan et al 32 Farmer reports that the band positions of selenates are readily distinguished from those of selenites. The selenite ion should show a maximum of six bands.…”

Section: Raman Microprobe Spectroscopymentioning

confidence: 99%

Raman spectroscopic study of the schmiederite Pb₂Cu₂[(OH)₄|SeO₃|SeO₄]

Frost

Keeffe

2008

J Raman Spectroscopy

View full text Add to dashboard Cite

Raman spectroscopy lends itself to the studies of selenites, selenates, tellurites and tellurates as well as related minerals. The mineral schmiederite Pb 2 Cu 2 [(OH) 4 jSeO 3 jSeO 4 ], is interesting, in that, both selenite and selenate anions occur in the structure. Raman bands of schmiederite at 1095 and 934 cm −1 are assigned to the symmetric and antisymmetric mode of the (SeO 4 ) 2− anions. For selenites, the symmetric stretching mode occurs at a higher position than the antisymmetric stretching mode, as is evidenced in the Raman spectrum of schmiederite. The band at 834 cm −1 is assigned to the symmetric (SeO 3 ) 2− units. The two bands at 764 and 739 cm −1 are attributed to the antisymmetric (SeO 3 ) 2− units. An intense, sharp band at 398 cm −1 is assigned to the n 2 bending mode. The two bands at 1576 and 1604 cm −1 are assigned to the deformation modes of the OH units. The observation of multiple OH bands supports the concept of a much distorted structure. This is based upon the four OH units coordinating the copper in a square planar structure. A single symmetric Raman band is observed at 3428 cm −1 and is assigned to the symmetric stretching mode of the OH units. The observation of multiple infrared OH stretching bands supports the concept of non-equivalent OH units in the schmiederite structure.

show abstract

Infrared absorption spectra of inorganic solids—III Selenates and selenites

Cited by 69 publications

References 8 publications

Raman spectroscopic study of the selenite minerals—chalcomenite CuSeO₃·2H₂O, clinochalcomenite and cobaltomenite

Raman spectroscopic study of the selenite minerals—chalcomenite CuSeO₃·2H₂O, clinochalcomenite and cobaltomenite

Thermal and other studies on bivalent metal selenltes

Raman spectroscopic study of the schmiederite Pb₂Cu₂[(OH)₄|SeO₃|SeO₄]

Contact Info

Product

Resources

About

Infrared absorption spectra of inorganic solids—III Selenates and selenites

Cited by 69 publications

References 8 publications

Raman spectroscopic study of the selenite minerals—chalcomenite CuSeO3·2H2O, clinochalcomenite and cobaltomenite

Raman spectroscopic study of the selenite minerals—chalcomenite CuSeO3·2H2O, clinochalcomenite and cobaltomenite

Thermal and other studies on bivalent metal selenltes

Raman spectroscopic study of the schmiederite Pb2Cu2[(OH)4|SeO3|SeO4]

Contact Info

Product

Resources

About

Raman spectroscopic study of the selenite minerals—chalcomenite CuSeO₃·2H₂O, clinochalcomenite and cobaltomenite

Raman spectroscopic study of the selenite minerals—chalcomenite CuSeO₃·2H₂O, clinochalcomenite and cobaltomenite

Raman spectroscopic study of the schmiederite Pb₂Cu₂[(OH)₄|SeO₃|SeO₄]