Polarized FTIR spectra and low temperature structure of adamantanol derivatives

1990 ◽  
Vol 222 (3-4) ◽  
pp. 305-317 ◽  
Author(s):  
J. Baran ◽  
J.A. Kanters ◽  
E.T.G. Lutz ◽  
J.H. Van Der Maas ◽  
A. Schouten ◽  
...  
Keyword(s):  
Low Temperature ◽  
Ftir Spectra ◽  
Temperature Structure ◽  
Polarized Ftir

ChemInform Abstract: Polarized FTIR Spectra and Low Temperature Structure of Adamantanol Derivatives. Part 1. 2-(2,4,6-Trimethylphenyl)adamantan-2-ol

ChemInform ◽  
1990 ◽  
Vol 21 (38) ◽  
Author(s):  
J. BARAN ◽  
J. A. KANTERS ◽  
E. T. G. LUTZ ◽  
J. H. VAN DER MAAS ◽  
A. SCHOUTEN ◽  
...  
Keyword(s):  
Low Temperature ◽  
Ftir Spectra ◽  
Temperature Structure ◽  
Polarized Ftir

Low-Temperature Structure (T = 235 K) and Structural Phase Transition in [(C2H5)4N]2SnCl6

1987 ◽  
Vol 103 (1) ◽  
pp. 73-78 ◽  
Author(s):  
H. Ketata ◽  
M. H. Ben Ghozlen ◽  
A. Daoud ◽  
I. Pabst
Keyword(s):  
Phase Transition ◽  
Low Temperature ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Temperature Structure

Single-Crystal X-Ray Scattering Study of Superstructures and Phase Transitions in Graphite-Hno3 and Graphite-Br2 Intercalation Compounds

1982 ◽  
Vol 20 ◽  
Author(s):  
R. Moret ◽  
R. Comes ◽  
G. Furdin ◽  
H. Fuzellier ◽  
F. Rousseaux
Keyword(s):  
Phase Transitions ◽  
Low Temperature ◽  
Room Temperature ◽  
Temperature Phase ◽  
Temperature Structure ◽  
X Ray ◽  
X Ray Scattering ◽  
Scattering Study ◽  
Temperature Liquid ◽  
Low Temperature Phase

ABSTRACTIn α-C5n-HNO3 the condensation of the room-temperature liquid-like diffuse ring associated with the disorder-order transition around 250 K is studied and the low-temperature. superstructure is examined.It is found that β-C8n-HNO3 exhibits an in-plane incommensurate order at room temperature.Two types of graphite-Br2 are found. Low-temperature phase transitions in C8Br are observed at T1 ≍ 277 K and T2 ≍ 297 K. The room-temperature structure of C14Br is reexamined. Special attention is given to diffuse scattering and incommensurability.

scholarly journals Low-temperature structure ofξ′-Al-Pd-Mn optimized byab initiomethods

2011 ◽  
Vol 84 (18) ◽  
Author(s):  
Benjamin Frigan ◽  
Alejandro Santana ◽  
Michael Engel ◽  
Daniel Schopf ◽  
Hans-Rainer Trebin ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Structure

The low-temperature structure of cis-cisoid-cis-perhydroanthracene, C14H24

1984 ◽  
Vol 40 (8) ◽  
pp. 1463-1465 ◽  
Author(s):  
H. van Koningsveld ◽  
J. M. A. Baas ◽  
B. van de Graaf
Keyword(s):  
Low Temperature ◽  
Temperature Structure

The role of hydrogen bonds in order-disorder transition of a new incommensurate low temperature phase β-[Zn-(C7H4NO4)2]·3H2O

2018 ◽  
Vol 233 (1) ◽  
pp. 17-25 ◽  
Author(s):  
Masoumeh Tabatabaee ◽  
Morgane Poupon ◽  
Václav Eigner ◽  
Přemysl Vaněk ◽  
Michal Dušek
Keyword(s):  
Low Temperature ◽  
Hydrogen Bonds ◽  
Dicarboxylic Acid ◽  
Room Temperature ◽  
Temperature Phase ◽  
Temperature Structure ◽  
Modulated Structure ◽  
Q Vector ◽  
Low Temperature Phase

AbstractThe room temperature structure withP21/csymmetry of the zinc(II) complex of pyridine-2,6-dicarboxylic acid was published by Okabe and Oya (N. Okabe, N. Oya, Copper(II) and zinc(II) complexes of pyridine-2,6-dicarboxylic acid.Acta Crystallogr. C.2000,56, 305). Here we report crystal structure of the low temperature phaseβ-[Zn(pydcH)2]·3H2O, pydc=C7H3NO4, resulting from the phase transition around 200K. The diffraction pattern of the low temperature phase revealed satellite reflections, which could be indexed with q-vector 0.4051(10)b* corresponding to (3+1)Dincommensurately modulated structure. The modulated structure was solved in the superspace groupX21/c(0b0)s0, whereXstands for a non-standard centring vector (½, 0, 0, ½), and compared with the room temperature phase. It is shown that hydrogen bonds are the main driving force of modulation.

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