Details
| Original language | English |
|---|---|
| Pages (from-to) | 225-229 |
| Number of pages | 5 |
| Journal | Zeitschrift für Naturforschung - Section A Physical Sciences |
| Volume | 55 |
| Issue number | 1-2 |
| Publication status | Published - 1 Feb 2000 |
Abstract
The temperature dependence of 1271 NQR and DSC as well as the crystal structure at room temperature of the title compound were determined. This compound shows a first-order phase transition of an order-disorder type at 245 K. Eight127I(v:1 NQR lines of 79.57, 81.86, 82.56, 83.36, 84.68, 87.72, 88.34, and 88.86 MHz, and corresponding eight 127I(i/2: m = ±| ±) NQR lines were observed at liquid nitrogen temperature. Three l27I(v1) NQR lines with an intensity ratio of 1:1:2 in the order of decreasing frequency were observed just above the transition point and two NQR lines except for the middle-frequency line disappeared around room temperature. This temperature behavior of NQR lines is very similar to that observed in [N(CH3)4]2Hgl4. Another first-order phase transition takes place at 527 K. The structure of the room-temperature phase was redetermined: orthorhombic, Pnma, Z = 4, a = 1342.8(3), b = 975.7(2), c = 1696.5(3) pm. The NQR result of three lines with an intensity ratio of 1:1:2 is in agreement with this structure. The thermal displacement parameters of atoms in both cations and anions are large.
Keywords
- Crystal Structure, DSC, NQR, Phase Transitio
ASJC Scopus subject areas
- Mathematics(all)
- Mathematical Physics
- Physics and Astronomy(all)
- General Physics and Astronomy
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Zeitschrift für Naturforschung - Section A Physical Sciences, Vol. 55, No. 1-2, 01.02.2000, p. 225-229.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - 127I NQR and Crystal Structure Studies of [N(CH3)4]2CdI4
AU - Ishihara, Hideta
AU - Horiuchi, Keizo
AU - Gesing, Thorsten M.
AU - Dou, Shi Qi
AU - Buhl, J. Christian
AU - Terao, Hiromitsu
PY - 2000/2/1
Y1 - 2000/2/1
N2 - The temperature dependence of 1271 NQR and DSC as well as the crystal structure at room temperature of the title compound were determined. This compound shows a first-order phase transition of an order-disorder type at 245 K. Eight127I(v:1 NQR lines of 79.57, 81.86, 82.56, 83.36, 84.68, 87.72, 88.34, and 88.86 MHz, and corresponding eight 127I(i/2: m = ±| ±) NQR lines were observed at liquid nitrogen temperature. Three l27I(v1) NQR lines with an intensity ratio of 1:1:2 in the order of decreasing frequency were observed just above the transition point and two NQR lines except for the middle-frequency line disappeared around room temperature. This temperature behavior of NQR lines is very similar to that observed in [N(CH3)4]2Hgl4. Another first-order phase transition takes place at 527 K. The structure of the room-temperature phase was redetermined: orthorhombic, Pnma, Z = 4, a = 1342.8(3), b = 975.7(2), c = 1696.5(3) pm. The NQR result of three lines with an intensity ratio of 1:1:2 is in agreement with this structure. The thermal displacement parameters of atoms in both cations and anions are large.
AB - The temperature dependence of 1271 NQR and DSC as well as the crystal structure at room temperature of the title compound were determined. This compound shows a first-order phase transition of an order-disorder type at 245 K. Eight127I(v:1 NQR lines of 79.57, 81.86, 82.56, 83.36, 84.68, 87.72, 88.34, and 88.86 MHz, and corresponding eight 127I(i/2: m = ±| ±) NQR lines were observed at liquid nitrogen temperature. Three l27I(v1) NQR lines with an intensity ratio of 1:1:2 in the order of decreasing frequency were observed just above the transition point and two NQR lines except for the middle-frequency line disappeared around room temperature. This temperature behavior of NQR lines is very similar to that observed in [N(CH3)4]2Hgl4. Another first-order phase transition takes place at 527 K. The structure of the room-temperature phase was redetermined: orthorhombic, Pnma, Z = 4, a = 1342.8(3), b = 975.7(2), c = 1696.5(3) pm. The NQR result of three lines with an intensity ratio of 1:1:2 is in agreement with this structure. The thermal displacement parameters of atoms in both cations and anions are large.
KW - Crystal Structure
KW - DSC
KW - NQR
KW - Phase Transitio
UR - http://www.scopus.com/inward/record.url?scp=0040141690&partnerID=8YFLogxK
U2 - 10.1515/zna-2000-1-240
DO - 10.1515/zna-2000-1-240
M3 - Article
AN - SCOPUS:0040141690
VL - 55
SP - 225
EP - 229
JO - Zeitschrift für Naturforschung - Section A Physical Sciences
JF - Zeitschrift für Naturforschung - Section A Physical Sciences
SN - 0932-0784
IS - 1-2
ER -