Direct and indirect recording of tungsten-183 NMR spectra, and structure determination of (diene)3M (M = tungsten, molybdenum) compounds in solution

1987 ◽  
Vol 6 (5) ◽  
pp. 938-942 ◽  
Author(s):  
Reinhard. Benn ◽  
Christian. Brevard ◽  
Anna. Rufinska ◽  
Gerhard. Schroth
Keyword(s):  
Structure Determination ◽  
Nmr Spectra

Total assignment of 1H and 13C NMR spectra of marchantins isolated from liverworts and its application to structure determination of two new macrocyclic bis(bibenzyls) from and

1985 ◽  
Vol 26 (39) ◽  
pp. 4735-4738 ◽  
Author(s):  
Motoo Tori ◽  
Masao Toyota ◽  
Leslie J. Harrison ◽  
Keiko Takikawa ◽  
Yoshinori Asakawa
Keyword(s):  
13C Nmr ◽  
Structure Determination ◽  
Nmr Spectra ◽  
13C Nmr Spectra ◽  
1H And 13C Nmr

scholarly journals Darstellung und Charakterisiening der Spezies R-C7H7Mo(CO)3 und die Röntgenstrukturanalyse von / Synthesis and Characterisation of the Species R-C7H7Mo(CO)3 and the X-ray Structure Determination of

1978 ◽  
Vol 33 (4) ◽  
pp. 361-365 ◽  
Author(s):  
Margret Sommer ◽  
Klaus Weidenhammer ◽  
Henning Wienand ◽  
Manfred L. Ziegler
Keyword(s):  
Carbon Atom ◽  
Structure Determination ◽  
Nmr Spectra ◽  
X Ray ◽  
Ethyl Group ◽  
H Nmr

The species R−C7H7Mo(CO)3 (R=−CH2COCH3,−CH(CH3)COCH3,−CH(CH)(CH3)2COCH3) have been synthesized by electrolysing [η7-C7H7Mo(CO)3]+, η7-C7H7Mo(CO)2Br and the dimers [C7H7Mo(CO)3]2 and (C7H7)2Mo(CO)3, respectively, in suitable ketones and HBr. 1H NMR spectra and the X-ray structure determination of (CH3−CO−CH(CH3)−C7H7)Mo(CO)3 revealed the CH3−CO−CH(CH3)-group being bonded to the cycloheptatriene ligand via the α-carbon atom of the ethyl group.

scholarly journals Computational simulations of solid state NMR spectra: a new era in structure determination of oxide glasses

RSC Advances ◽  
2013 ◽  
Vol 3 (27) ◽  
pp. 10550 ◽  
Author(s):  
Thibault Charpentier ◽  
Maria Cristina Menziani ◽  
Alfonso Pedone
Keyword(s):  
Solid State ◽  
Structure Determination ◽  
Solid State Nmr ◽  
Nmr Spectra ◽  
Oxide Glasses ◽  
Computational Simulations ◽  
New Era

Strukturbestimmung von Ga[GaCl4] und α-Ga[GaBr4] nach Kristallisation aus Halogenbenzolen / Structure Determination of Ga[GaCl4] and α-Ga[GaBr4] Crystallized from Halobenzene Solvents

1987 ◽  
Vol 42 (5) ◽  
pp. 553-556 ◽  
Author(s):  
H. Schmidbaur ◽  
R. Nowak ◽  
W. Bublak ◽  
P. Burkert ◽  
B. Huber ◽  
...  
Keyword(s):  
Single Crystals ◽  
Crystal Structures ◽  
Structure Determination ◽  
Nmr Spectra ◽  
Approximate Calculation ◽  
Crystal Data ◽  
Crystalline Powder ◽  
Powder Samples ◽  
Asymmetry Parameters

Single crystals of Ga[GaCl4] and α-Ga[GaBr4] have been obtained by crystallization from chlorobenzene and bromobenzene, respectively. The crystal structures of the two compounds, determined previously only on the basis of photographic data, were refined to a more satisfactory level of accuracy. The results confirm the presence of tetrahedral GaX4- anions as thecounterions to dodecahedrally coordinated Ga+ cations. The gallium-halogen distances in these dodecahedral arrays fall into four classes, thus resulting in a significant asymmetry of the Ga(I) center. This deviation from ideal S4 symmetry is also apparent in the 69Ga NMR spectra of the crystalline powder samples. Approximate calculation of the data leads to asymmetry parameters (η) of 0.44 and 0.27 for the chloride and bromide, respectively. Crystal data Ga[GaCl4]: Pnna (#52), a = 7.200(1), b = 9.625(1), c = 9.498(1) Å; Z = 4. For α-Ga[GaBr4]: Pnna, a = 7.528(1), b = 9.972(1), c = 10.010(1) Å, Z = 4.

scholarly journals Isolation and Structure Determination of Banana Pseudostem Based Uro-Lignin

1970 ◽  
Vol 33 (2) ◽  
pp. 227-229
Author(s):  
Md Abdul Hye
Keyword(s):  
Molecular Structure ◽  
Structure Determination ◽  
Nmr Spectra ◽  
Naoh Solution ◽  
Academy Of Sciences

Lignin was isolated from wet Banana pseudostem with 2% NaOH solution by boiling. The isolated lignin was treated with urea and called uro-lignin. IR, Mass and NMR spectra of urolignin were taken to determine its molecular structure. DOI: 10.3329/jbas.v33i2.4106 Journal of Bangladesh Academy of Sciences, Vol. 33, No. 2, 227-229, 2009

scholarly journals Zur Chemie der 1,3,5-Triaza-2-phosphinan-4,6-dione, Teil V Darstellung der Phosphoryl(III)(λ4P)- und Thiophosphoryl(III)(λ4P)-Derivate der 1,3,5-Triaza-2-phosphinan-4,6-dione. Umsetzungen mit Ketonen Chemistry of the 1,3,5-Triaza-2-phosphinane-4,6-diones, Part V / Synthesis of Phosphoryl(III)(λ4P) and Thiophosphoryl(III)(λ4P) Derivatives of 1,3,5-Triaza-2-phosphinane-4,6-diones. Reactions with Ketones

1993 ◽  
Vol 48 (7) ◽  
pp. 860-866 ◽  
Author(s):  
Ion Neda ◽  
Michael Farkens ◽  
Axel Fischer ◽  
Peter G. Jones ◽  
Reinhard Schmutzler
Keyword(s):  
Mass Spectrum ◽  
Hydrogen Sulphide ◽  
Structure Determination ◽  
Mass Spectra ◽  
Nmr Spectra ◽  
Structural Element ◽  
Nmr Spectrum ◽  
X Ray ◽  
Derivatives Of

The phosphoryl(III)(λ4P) and thiophosphoryl(III)(λ4P) derivatives, 1,3,5-trimethyl-2-hydro-1,3,5-triaza-2-oxo-2λ4-phosphinane-4,6-dione 2 and 1,3,5-trimethyl-2-hydro-1,3,5-triaza-2-thio-2λ4-phosphinane-4,6-dione 3 were obtained from 2-chloro-1,3,5-trimethyl-1,3,5-triaza-2λ3-phosphinane-4,6-dione 1, by reaction either with water or with hydrogen sulphide. The reactions of 2 and 3 with the fluorine-containing ketones, hexafluoroacetone and trifluoroacetophenone, led to the compounds 4-7 with the P(:O)–O or P(:S)–O structural element. The compounds 2-6 were characterized via their 1H, 13C and 31P NMR spectra, mass spectra and through the X-ray structure determination of 4. Compound 7 was characterized from its 1H and 31P NMR spectrum and mass spectrum, only.

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