Some New 1-D Compounds with Metal-Halide Chain

1981 ◽  
Vol 36 (1) ◽  
pp. 83-86 ◽  
Author(s):  
D. Layek ◽  
G. C. Papavassiliou
Keyword(s):  
Single Crystals ◽  
Raman Spectra ◽  
Mixed Valence ◽  
Metal Halide ◽  
Anisotropic Character ◽  
Chemical Behaviour ◽  
Polarized Raman ◽  
Mixed Valence Compounds

Abstract Some new mixed valence compounds of the type [M(L-L)2M(L-L)2X2]Y4 (where M = Pt or Pd, L-L = 2NH3 or ethylenediamine, X = Cl, Br or I and Y = HSO4, 1/2 SO4, ClO4 or 1/2 PtCl4) have been synthesized. The polarized Raman spectra of single crystals show the anisotropic character and the presence of ---M(II)---X-M(IV)-X chains. The method of preparation and the chemical behaviour correspond to the mechanism of the formation of Magnus green salt oxidized product.

Identification of hydrogen bond modes in polarized Raman spectra of single crystals of α-oxalic acid dihydrate

2009 ◽  
Vol 40 (11) ◽  
pp. 1605-1614 ◽  
Author(s):  
Vlasta Mohaček-Grošev ◽  
Jože Grdadolnik ◽  
Jernej Stare ◽  
Dušan Hadži
Keyword(s):  
Hydrogen Bond ◽  
Oxalic Acid ◽  
Single Crystals ◽  
Raman Spectra ◽  
Oxalic Acid Dihydrate ◽  
Polarized Raman

Electronic and Resonance Raman Spectra of Some New Mixed-Valence Compounds of Pt and Pd with a Metal-Halide Chain

1980 ◽  
Vol 35 (6) ◽  
pp. 676-679 ◽  
Author(s):  
G. C. Papavassiliou ◽  
D. Layek
Keyword(s):  
Raman Spectra ◽  
Linear Chain ◽  
Mixed Valence ◽  
Resonance Raman ◽  
Chain Structure ◽  
One Dimensional ◽  
Resonance Raman Spectra ◽  
The One ◽  
Mixed Valence Compounds ◽  
Linear Chain Structure

Abstract The electronic and resonance Raman spectra of new mixed-valence compounds of the type M2ʹ[M(L)X3][M(L)X5], where Mʹ = K, NH4, M = Pt or Pd, L = NH3 or pyridine, and X = Cl, Br or I, have been studied. The single-crystal polarized reflectance spectra indicate the one-dimensional semiconductor behaviour. The polarized resonance Raman spectra confirm the --M(II)--X-M(IV)-X linear chain structure, which is in accordance with the X-ray results. The polarization of M-N bands can be explained by the Snyder's theory (1971).

Polarized Raman spectra of superconducting and semiconducting YBa2Cu3Ox single crystals

1988 ◽  
Vol 153-155 ◽  
pp. 290-291 ◽  
Author(s):  
V.G. Hadjiev ◽  
M.N. Iliev ◽  
P.G. Vassilev
Keyword(s):  
Single Crystals ◽  
Raman Spectra ◽  
Polarized Raman

ChemInform Abstract: POLARIZED RAMAN SPECTRA OF (NH4)2SO4 SINGLE CRYSTALS

1974 ◽  
Vol 5 (34) ◽  
Author(s):  
KATSUO UCHIDA ◽  
HIROAKI TAKAHASHI ◽  
KENITI HIGASI
Keyword(s):  
Single Crystals ◽  
Raman Spectra ◽  
Polarized Raman

Some New One-dimensional Compounds: Preparation and Optical Properties

1980 ◽  
Vol 35 (1) ◽  
pp. 112-113 ◽  
Author(s):  
D. Layek ◽  
G. C. Papavassiliou
Keyword(s):  
Optical Properties ◽  
Raman Spectra ◽  
Partial Oxidation ◽  
Mixed Valence ◽  
Reflectance Spectra ◽  
One Dimension ◽  
One Dimensional ◽  
Type K ◽  
Resonance Raman Spectra ◽  
Mixed Valence Compounds

New mixed-valence compounds of the type K2[Pt(NH3)X3]-[Pt(NH3)X5] (where X - Cl or Br) were prepared by partial oxidation-addition of K[Pt(NH3)X3] with Cl2 and Br2. The absorption and polarized reflectance spectra of these compounds show a semiconductor behaviour in one dimension and the resonance Raman spectra indicate the ···Pt(II) ···X -Pt(IV)-X chain.

Polarized Raman spectra of the oriented NaY(WO4)2 and KY(WO4)2 single crystals

2000 ◽  
Vol 555 (1-3) ◽  
pp. 289-297 ◽  
Author(s):  
L. Macalik ◽  
J. Hanuza ◽  
A.A. Kaminskii
Keyword(s):  
Single Crystals ◽  
Raman Spectra ◽  
Polarized Raman

Polarized Raman Scattering Study of ZnGeP2 Single Crystals

1997 ◽  
Vol 484 ◽  
Author(s):  
Spirit Tlali ◽  
Howard E. Jackson ◽  
M. C. Ohmer ◽  
P. G. Schunemann ◽  
T. M. Pollak
Keyword(s):  
Raman Scattering ◽  
Single Crystals ◽  
Raman Spectra ◽  
Low Temperatures ◽  
High Quality ◽  
Crystal Orientations ◽  
Gradient Technique ◽  
Theoretical Predictions ◽  
Scattering Study ◽  
Polarized Raman

AbstractRaman scattering experiments on high quality ZnGeP2 single crystals grown by the seeded horizontal dynamic gradient technique have been carried out. Polarized Raman spectra were obtained in the backscattering geometry at both room and low temperatures for several crystal orientations and compared with group theoretical predictions. Raman spectra from as-grown and annealed samples display distinctive differences which were explored by utilizing two different excitation wavelengths: 514.3 nm and 632.8 nm; the observed differences are attributed to a surface interdiffuasion effect.

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