The redetermination of the crystal structure of trisulphur dinitrogen dioxide

1981 ◽  
Vol 59 (2) ◽  
pp. 187-190 ◽  
Author(s):  
Greg MacLean ◽  
Jack Passmore ◽  
Peter S. White ◽  
Arthur Banister ◽  
James A. Durrant
Keyword(s):  
Crystal Structure ◽  
Raman Spectra ◽  
Infrared And Raman Spectra

The crystal structure of S3N2O2 has been redetermined and the structure refined to a final R of 0.057 and Rw of 0.076 for 550 reflections with I ≥ 2σ(I). S3N2O2 is planar and of C2v symmetry, as previously found by Weiss. The central S—N distances and angle are 1.647(3) Å, NŜN 97.3(2)°, with adjacent N—S distances and angles of 1.535(3) Å, [Formula: see text], and terminal S—O distances and angles of 1.446(4) Å, NŜO 118.0(2)°. The infrared and Raman spectra are reported and some assignments are made.

Kristallstruktur und Schwingungsspektren des Di-Blei-Hexaselenohypodiphosphates Pb2P2Se6 / Crystal Structure and Vibrational Spectra of Pb2P2Se6

1984 ◽  
Vol 39 (4) ◽  
pp. 357-361 ◽  
Author(s):  
Robert Becker ◽  
Wolfgang Brockner ◽  
Herbert Schäfer
Keyword(s):  
Crystal Structure ◽  
Raman Spectra ◽  
Vibrational Spectra ◽  
Title Compound ◽  
Far Infrared ◽  
Infrared And Raman Spectra ◽  
Monoclinic System ◽  
Space Group ◽  
Lattice Constants

Pb2P2Se6 crystallizes in the monoclinic system, space group Pn (No. 13) with the lattice constantsa = 974.2 (4) pm. b = 766.2 (3) pm. c = 689.8 (3) pm, β=91.44(5)°.The title compound is isotypic to the homologous Pb2P2S6. In the structure there are discrete P2Se4-6 anions.Far infrared, infrared and Raman spectra of this compound have been recorded. The observed frequencies are assigned on the basis of P2Se4-6 units with C2h symmetry in the crystal. DTA-data have been determined and interpreted.

Normal Coordinate Analysis of Benitoite (BaTiSi3O9) and its Constituent Ring

1992 ◽  
Vol 291 ◽  
Author(s):  
Charles C. Kim ◽  
M. I. Bell ◽  
D. A. McKeown
Keyword(s):  
Crystal Structure ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Normal Modes ◽  
Infrared And Raman Spectra ◽  
Normal Coordinate ◽  
Structure Space ◽  
New Information ◽  
Atomic Interactions ◽  
Modes Of Vibration

ABSTRACTThe normal modes of vibration and their frequencies are calculated for benitoite, a mineral whose crystal structure (space group D23h) consists of three-membered silicate rings (Si3O9) linked by Ba+2 and Ti+4 ions. The calculation unambiguously assigns the normal modes to the lines in the Raman and infrared spectra and determines the atomic interactions. On the assumption that mode mixings and splittings due to inter-ring interactions are small, the normal frequencies of the isolated ring of C3h, symmetry are determined. The identification of normal modes characteristic of three-membered silicate rings may prove to be a valuable guide in the interpretation of the infrared and Raman spectra of amorphous silicates, potentially leading to new information on the ring statistics of these materials.

scholarly journals Darstellung, Kristallstruktur und Schwingungsspektren von cyclo-Undekaschwefel (S11) und von cyclo-Tridekaschwefel (S13) / Preparation, Crystal Structure, and Vibrational Spectra of cyclo-Undecasulfur (S11) and of cyclo-Tridecasulfur (S13)

1986 ◽  
Vol 41 (8) ◽  
pp. 958-970 ◽  
Author(s):  
Ralf Steudel ◽  
Jürgen Steidel ◽  
Torsten Sandow
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Raman Spectra ◽  
Vibrational Spectra ◽  
Infrared And Raman Spectra ◽  
X Ray ◽  
Bond Angles ◽  
Torsional Angles

AbstractThe homocyclic S11 and S13 molecules have been synthesized from titanocenepentasulfide and S6Cl2 or S8Cl2, respectively, and obtained as yellow crystals which are metastable for several days at 20 °C. X-Ray structural analyses of single crystals at -105± 5 °C exhibited molecules of approximately C2 symmetry with bond distances (d), bond angles (a) and torsional angles (r) in the following ranges: S11 : d = 203.2 -211.0 pm, α = 103.3-108.6°, τ = 69.3 - 140.5°; S13: d = 197.8 - 211.3 pm, α = 102.8-111.1°, τ = 29.5 - 116.3°. Infrared and Raman spectra of S11 and S13 are reported. In addition, the synthesis of S6Cl2 and S8Cl2 from S6 or S8, respectively, and chlorine is described.

The Vibrational Spectra and Crystal Structure of Acenaphthylene

1973 ◽  
Vol 51 (3) ◽  
pp. 402-404 ◽  
Author(s):  
A. Bree ◽  
R. A. Kydd ◽  
V. V. B. Vilkos ◽  
R. S. Williams
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Raman Spectra ◽  
Vibrational Spectra ◽  
Room Temperature ◽  
Infrared And Raman Spectra ◽  
Depolarization Ratio ◽  
X Ray

A study of the polarized infrared and Raman spectra of acenaphthylene single crystals has been made. These results, together with Gordon and Yang's preliminary X-ray work, suggest that the molecules pack in some disordered arrangement in the solid at room temperature. Most of the A1 fundamentals were identified in the Raman solution spectrum from their low depolarization ratio, and a few tentative assignments of nontotally symmetric fundamentals were made.

Crystal structure and the infrared and Raman spectra of potassium nitridosulphonate hydrate, K3[N(SO3)2]·H2O

1980 ◽  
pp. 1091-1097 ◽  
Author(s):  
John R. Hall ◽  
Robert A. Johnson ◽  
Colin H. L. Kennard ◽  
Graham Smith ◽  
Brian W. Skelton ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Raman Spectra ◽  
Infrared And Raman Spectra
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