Direct qualitative and quantitative characterization of a radiosensitizer, 5-iodo-2′-deoxyuridine within biodegradable polymeric microspheres by FT-Raman spectroscopy

The Analyst ◽  
1999 ◽  
Vol 124 (1) ◽  
pp. 37-42 ◽  
Author(s):  
Annabelle Geze ◽  
Franck Boury ◽  
Jean-Pierre Benoit ◽  
Igor Chourpa ◽  
Pierre Dubois
Keyword(s):  
Raman Spectroscopy ◽  
Quantitative Characterization ◽  
Polymeric Microspheres ◽  
Qualitative And Quantitative ◽  
Ft Raman Spectroscopy ◽  
Ft Raman

The use of NIR-FT-Raman spectroscopy for the characterization of polymer-supported reagents and catalysts

Tetrahedron ◽  
2001 ◽  
Vol 57 (41) ◽  
pp. 8675-8683 ◽  
Author(s):  
B Altava ◽  
M.I Burguete ◽  
E Garcı́a-Verdugo ◽  
S.V Luis ◽  
M.J Vicent
Keyword(s):  
Raman Spectroscopy ◽  
Ft Raman Spectroscopy ◽  
Polymer Supported ◽  
Ft Raman

scholarly journals The preparation and characterization of SeCl3SbF6, improved syntheses of MCl3(As/Sb)F6 (M = S, Se), and the X-ray crystal structure determination of SeCl3AsF6 and a new phase of SBr3SbF6

1996 ◽  
Vol 74 (9) ◽  
pp. 1671-1681 ◽  
Author(s):  
Jack Passmore ◽  
Paul D. Boyle ◽  
Gabriele Schatte ◽  
Todd Way ◽  
T. Stanley Cameron
Keyword(s):  
Crystal Structure ◽  
Raman Spectroscopy ◽  
Crystal Structures ◽  
Monoclinic Space Group ◽  
X Ray ◽  
Ft Raman Spectroscopy ◽  
New Phase ◽  
Ft Raman

Alternative and, in some cases, improved syntheses of the salts MX3(As/Sb)F6 (M = S, Se) and SCl3(SbCl6/AlCl4) are described. In addition, the synthesis of SeCl3SbF6 is reported. The compounds were characterized by FT–Raman spectroscopy and the X-ray crystal structures of SeCl3AsF6 (also 77Se NMR) and a new phase of SBr3SbF6 were determined. Crystals of SeCl3AsF6 and SBr3SbF6 are monoclinic, space group P21/c with [values for SBr3SbF6 in brackets] a = 7.678(1) [8.137(1)] Å, b = 9.380(3) [9.583(2)] Å, c = 11.920(3) [12.447(2)] Å, β = 98.19(2)° [97.36(1)]°, V = 849.72(3) [962.6(3)] Å3,z = 4, Dx = 2.925 [3.502] Mg m−3, R = 0.0525 [0.055], and Rw = 0.0554 [0.060] for 1151 [1472] observed reflections. Key words: MX3+ salts, FT–Raman spectroscopy, X-ray crystal structures of SeCl3AsF6, SBr3SbF6, and preparation of SeCl3SbF6.

The preparation, X-ray crystal structure, and spectroscopic characterization of pentafluorophenyl-bis(pentafluorophenylthio)sulfonium hexafluoroarsenate, [(C6F5S)2SC6F5][AsF6]

1998 ◽  
Vol 76 (7) ◽  
pp. 1050-1059 ◽  
Author(s):  
Scott Brownridge ◽  
T Stanley Cameron ◽  
Jack Passmore ◽  
Gabriele Schatte ◽  
George W Sutherland
Keyword(s):  
Crystal Structure ◽  
Raman Spectroscopy ◽  
Room Temperature ◽  
Spectroscopic Characterization ◽  
Orthorhombic Space Group ◽  
X Ray ◽  
Cell Dimensions ◽  
Ft Raman Spectroscopy ◽  
Ft Raman

Pentafluorophenyl-bis(pentafluorophenylthio)sulfonium hexafluoroarsenate, [(C6F5S)2SC6F5][AsF6], was prepared by the reaction of (C6F5)2S2 and AsF5 in liquid SO2 at room temperature. The compound has been characterized by single-crystal X-ray and powder diffraction, and IR and FT-Raman spectroscopy. Crystals of [(C6F5S)2SC6F5][AsF6] are orthorhombic, space group P212121 (cell dimensions measured at room temperature in brackets): a = 13.132(3) [13.157(2)] Å, b = 21.477(4) [21.575(3)] Å, c = 8.770(2) [8.775(1)] Å, α = ß = γ = 90.00°; V = 2473.3(9) Å3, Z = 4, temperature = 181 ± 1 K. The structure consists of [AsF6]- anions and [(C6F5S)2SC6F5]+ cations that have a different structure than the related [X2MMMX]+ cations (M = S, Se; X = Cl, Br), which contain a trichalcogen chain with a pronounced chalcogen-chalcogen bond alternation. Ab initio calculations suggest the observed [(C6F5S)2SC6F5]+ geometry is due to steric and solid state effects. Comparison of the Raman spectra of [(C6F5)S2SC6F5][AsF6], [Cl2SSSCl][AsF6], and [(CH3)2ClS3]+ implies that [(CH3)2ClS3]+ has a structure with equal sulfur-sulfur distances, and therefore the structure is likely [(CH3S)2SCl]+ and probably not the previously reported [(CH3)2SSSCl]+.Key words: [R3X3]+ cations, X-ray crystal structure, FT-Raman spectroscopy, [(C6F5S)2SC6F5]+, pentafluorophenyl-bis(pentafluorophenylthio)sulfonium cation, hexafluoroarsenate.

FT Raman Spectroscopy as a Tool for Characterization of Derivatized Silica Gel Sorbents

2005 ◽  
Vol 70 (2) ◽  
pp. 168-177
Author(s):  
Zuzana Tománková ◽  
Pavel Matějka ◽  
Karel Volka ◽  
Vladimír Král
Keyword(s):  
Raman Spectroscopy ◽  
Silica Gel ◽  
Stationary Phases ◽  
Amide Bonds ◽  
Raman Spectroscopic ◽  
Ft Raman Spectroscopy ◽  
Trimethylsilyl Groups ◽  
Ft Raman

The potential of Fourier-transform (FT) Raman spectroscopy for verification of individual steps of synthesis of new chromatographic stationary phases was studied. 3-Aminopropylated silica gel was modified with two different optically active compounds ((+)-cloprostenol, (+)-(R)-2,2'-dihydroxy-1,1'-binaphthalene-3-carboxylic acid) via amide bonds. In the next step, free silanol groups were protected with trimethylsilyl groups. The FT Raman spectroscopic results compared with the data obtained by elemental analysis enable not only qualitative verification of synthetic steps, but also a semiquantitative determination of covering of the silica gel surface by derivatization agent.

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