Abstract
A straight forward room-temperature synthesis of V(III) containing complex fluoride K3VF6, using KF and vanadium(III) acetylacetonate is reported. The pale green colored powder was characterized by chemical analysis, powder X-ray diffraction; diffuse reflectance spectroscopy, infrared spectroscopy, Raman spectroscopy, differential scanning calorimetry, scanning electron microscopy, photoluminescence spectroscopy, magnetic susceptibility measurements and photoluminescence spectroscopy. The powder X-ray diffraction pattern was fitted in P21/n space group (monoclinic) with a = 12.106 (1) , b = 17.685 (0) , c = 11.802 (0) , β = 92.23° (1). Differential scanning calorimetry showed phase transitions, occurring at 158 °C and 190 °C. In the FT-IR spectrum, characteristic band for the VF6 3- group was observed at 508 cm-1. The bands observed in the 335-361 cm-1 region and at 504 cm-1 in the room temperature Raman spectrum of K3VF6 corresponded to the F2g and A1g modes, respectively. The ratio of the frequencies (F2g/A1g) observed in the diffuse reflectance spectrum was fitted on the Tanabe-Sugano diagram to determine the Racah parameter B value of 712 cm-1. Magnetic ordering was not observed down to the lowest measured temperature of 5 K.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1425-1429 |
| Number of pages | 5 |
| Journal | Polyhedron |
| Volume | 30 |
| Issue number | 8 |
| DOIs | |
| State | Published - May 17 2011 |
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All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry
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Spectroscopic, thermal, magnetic and structural characterization of K 3VF6 prepared at room temperature. / Nagarajan, R.; Tyagi, Neetu; Lofland, Samuel; Ramanujachary, Kandalam.
In: Polyhedron, Vol. 30, No. 8, 17.05.2011, p. 1425-1429.Research output: Contribution to journal › Article
TY - JOUR
T1 - Spectroscopic, thermal, magnetic and structural characterization of K 3VF6 prepared at room temperature
AU - Nagarajan, R.
AU - Tyagi, Neetu
AU - Lofland, Samuel
AU - Ramanujachary, Kandalam
PY - 2011/5/17
Y1 - 2011/5/17
N2 - A straight forward room-temperature synthesis of V(III) containing complex fluoride K3VF6, using KF and vanadium(III) acetylacetonate is reported. The pale green colored powder was characterized by chemical analysis, powder X-ray diffraction; diffuse reflectance spectroscopy, infrared spectroscopy, Raman spectroscopy, differential scanning calorimetry, scanning electron microscopy, photoluminescence spectroscopy, magnetic susceptibility measurements and photoluminescence spectroscopy. The powder X-ray diffraction pattern was fitted in P21/n space group (monoclinic) with a = 12.106 (1) , b = 17.685 (0) , c = 11.802 (0) , β = 92.23° (1). Differential scanning calorimetry showed phase transitions, occurring at 158 °C and 190 °C. In the FT-IR spectrum, characteristic band for the VF6 3- group was observed at 508 cm-1. The bands observed in the 335-361 cm-1 region and at 504 cm-1 in the room temperature Raman spectrum of K3VF6 corresponded to the F2g and A1g modes, respectively. The ratio of the frequencies (F2g/A1g) observed in the diffuse reflectance spectrum was fitted on the Tanabe-Sugano diagram to determine the Racah parameter B value of 712 cm-1. Magnetic ordering was not observed down to the lowest measured temperature of 5 K.
AB - A straight forward room-temperature synthesis of V(III) containing complex fluoride K3VF6, using KF and vanadium(III) acetylacetonate is reported. The pale green colored powder was characterized by chemical analysis, powder X-ray diffraction; diffuse reflectance spectroscopy, infrared spectroscopy, Raman spectroscopy, differential scanning calorimetry, scanning electron microscopy, photoluminescence spectroscopy, magnetic susceptibility measurements and photoluminescence spectroscopy. The powder X-ray diffraction pattern was fitted in P21/n space group (monoclinic) with a = 12.106 (1) , b = 17.685 (0) , c = 11.802 (0) , β = 92.23° (1). Differential scanning calorimetry showed phase transitions, occurring at 158 °C and 190 °C. In the FT-IR spectrum, characteristic band for the VF6 3- group was observed at 508 cm-1. The bands observed in the 335-361 cm-1 region and at 504 cm-1 in the room temperature Raman spectrum of K3VF6 corresponded to the F2g and A1g modes, respectively. The ratio of the frequencies (F2g/A1g) observed in the diffuse reflectance spectrum was fitted on the Tanabe-Sugano diagram to determine the Racah parameter B value of 712 cm-1. Magnetic ordering was not observed down to the lowest measured temperature of 5 K.
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U2 - 10.1016/j.poly.2011.03.012
DO - 10.1016/j.poly.2011.03.012
M3 - Article
AN - SCOPUS:79954996168
VL - 30
SP - 1425
EP - 1429
JO - Polyhedron
JF - Polyhedron
SN - 0277-5387
IS - 8
ER -