Organobismuth Compounds. III. Preparation and Infrared Spectra of Triphenylbismuth(V) Derivatives of Dibasic Acids

1971 ◽  
Vol 49 (15) ◽  
pp. 2529-2532 ◽  
Author(s):  
R. G. Goel ◽  
H. S. Prasad
Keyword(s):  
Solid State ◽  
Infrared Spectra ◽  
Frequency Region ◽  
The Other ◽  
Stretching Vibrations ◽  
Derivatives Of ◽  
Polymeric Structures

Triphenylbismuth carbonate, oxalate, sulfate, selenate, and chromate have been prepared and their solid state infrared (i.r.) spectra have been studied in the frequency region 4000 to 200 cm−1. The i.r. spectroscopic results indicate that, like the corresponding trimethyl- and triphenylantimony(V) derivatives, these compounds also have non-ionic polymeric structures containing bridging anion groups and five co-ordinate bismuth. The i.r. frequencies associated with the bismuth–anion stretching vibrations appear to occur at 300 cm−1 for the carbonate and below 300 cm−1 for the other compounds.

4,4'-Bipyridine complexes with some uranyl salts

1973 ◽  
Vol 26 (9) ◽  
pp. 1871 ◽  
Author(s):  
IS Ahuja ◽  
R Singh
Keyword(s):  
Solid State ◽  
Rock Salt ◽  
Infrared Spectra ◽  
Low Frequency ◽  
Bidentate Ligand ◽  
Frequency Region ◽  
Chelating Ligands ◽  
Uranyl Chloride ◽  
Metal Atoms ◽  
Polymeric Structures

The complexes formed by 4,4?-bipyridine with uranyl chloride, sulphate, and nitrate of the type UO2(4,4?-bipyridine)X2, where X = Cl or 1/2SO4, and UO2(4,4?-bi-pyridine)1.5(NO3)2 have been prepared and their infrared spectra in the rock salt and low-frequency region (down to 200 cm-1) studied in the solid state. I.r. spectra of these complexes show that 4,4?-bipyridine acts as a bidentate ligand bridging between two metal atoms. It is suggested that the sulphate and nitrate groups act as bidentate chelating ligands and the complexes are polymeric structures.

Organoantimony compounds. I. Infrared spectra of some trimethyl- and triphenyl-antimony derivatives

1969 ◽  
Vol 47 (8) ◽  
pp. 1423-1427 ◽  
Author(s):  
R. G. Goel ◽  
P. N. Joshi ◽  
D. R. Ridley ◽  
R. E. Beaumont
Keyword(s):  
Solid State ◽  
Infrared Spectra ◽  
Structural Characteristics ◽  
Anionic Group ◽  
Polymeric Structures

Organoantimony compounds of the type R3SbX and (R3Sb)2OX, where R is methyl or phenyl, and X is a bivalent anionic group such as SeO4, CrO4, or C2O4, have been prepared. Structural characteristics of these compounds have been determined by studying their infrared spectra in the solid state between 4000 and 250 cm−1. The spectral results indicate that in both types of compounds the anion X is coordinated to the R3Sb or (R3Sb—O—SbR3) group resulting in non-ionic, five coordinate, polymeric structures.

Vibrational spectra of phosphorus ligand derivatives of some alkyltricarbonyl-π-cyclopentadienylmolybdenum compounds

1970 ◽  
Vol 48 (19) ◽  
pp. 3089-3094 ◽  
Author(s):  
P. J. Craig
Keyword(s):  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Carbonyl Compounds ◽  
Metal Carbonyl ◽  
Metal Ring ◽  
Complex Metal ◽  
Stretching Vibrations ◽  
Phosphine Derivatives ◽  
Derivatives Of ◽  
Complementary Study

Raman and infrared spectra of a series of complexes RCOMo(CO)2[L]π-C5H5 (R = Me, Et, σ-C3H5, CH2Ph; L = PPh3, P(OCH2)3CCH3) and of ClMo(CO)2[PPh3]π-C5H5 and HW(CO)2[P(OPh)3]π-C5H5 have been recorded. In this complementary study of complex metal carbonyl compounds, assignments are suggested for metal–carbon–oxygen deformation, metal–carbon stretching, metal–ring, and metal–phosphorus stretching vibrations. It is thought that the latter occur in the range 240–200 cm−1, frequencies for phosphite complexes being lower than for the corresponding phosphine derivatives.

Thio derivatives of β-diketones and their metal chelates. VI. Metal chelates of 3-Mercapto-1,3-diphenylprop-2-en-1-one and their infrared spectra

1967 ◽  
Vol 20 (6) ◽  
pp. 1065 ◽  
Author(s):  
SHH Chaton ◽  
SE Livingstone
Keyword(s):  
Metal Complexes ◽  
Infrared Spectra ◽  
Metal Ion ◽  
Free Ligand ◽  
Carbonyl Oxygen ◽  
Metal Chelates ◽  
The Other ◽  
Methyl Derivative ◽  
Derivatives Of

Complexes of 3-mercapto-1,3-diphenylprop-2-en-1-one, PhC(SH)=CHCOPh, with iron(III), cobalt(III), rhodium(III), nickel(II), palladium(II), platinum(II), copper(II), silver(I), zinc(II), cadmium(II), and mercury(II) have been prepared and characterized. Complexes of 4- mercaptopent-3-en-2-one, MeC(SH)=CHCOMe, with cobalt(III) and cadmium(II) and of ethyl thioacetoacetate, MeC(SH)=CHCOOEt, with cobalt(III) and copper(I) are also reported. The infrared spectra of the complexes of 3-mercapto-1,3- diphenylprop-2-en-1-one are discussed. The similarity of the spectra of the silver(I), cadmium(II), and mercury(II) complexes to those of the free ligand and its S-methyl derivative, PhC(SMe)=CHCOPh, indicate that in these three complexes the carbonyl oxygen of the ligand is not, or is at most weakly, coordinated to the metal ion. The assignments of the principal bands in the other metal complexes of this ligand are: 1550- 1525 cm-1, v(C-C); 1480-1458 cm-1, v(C=O); 1438-1412 cm-1, v(C=O)+δ(C-H); 1270-1260 cm-1, v(C--S); 498-437 cm-1, v(M-O); 399-376 cm-1, v(M-S).

Synthetic, Infrared And Nmr (1H And 13C) Spectral Studies Of N-(Substituted Phenyl)-Methanesulphonamides

2004 ◽  
Vol 59 (7-8) ◽  
pp. 491-500 ◽  
Author(s):  
K. L. Jayalakshmi ◽  
B. Thimme Gowda
Keyword(s):  
Solid State ◽  
Infrared Spectra ◽  
Phenyl Ring ◽  
Chemical Shifts ◽  
Aromatic Proton ◽  
Spectral Studies ◽  
Substituted Anilines ◽  
Substituted Benzenes ◽  
Stretching Vibrations ◽  
Electron Donating Groups

Twenty two N-(substituted phenyl)-methanesulphonamides of the general formula, CH3SO2NHR, where R = 4-XC6H4(X = H, CH3, F, Cl, Br or NO2), i-XC6H4(X=CH3, Cl orNO2 and i=2 or 3) and i, j-X2C6H3(i, j-X2 = 2,3-(CH3)2, 2,4-(CH3)2, 2,5-(CH3)2, 2,6-(CH3)2, 3,5-(CH3)2, 2,3-Cl2, 2,4- Cl2, 2,5-Cl2, 2,6-Cl2 or 3,4-Cl2) were prepared, characterized and their infrared spectra in the solid state and the NMR (1H and 13C) spectra in solution studied. The N-H stretching vibrations absorb in the range, 3298 - 3232 cm−1. Asymmetric and symmetric SO2 stretching vibrations appear as strong absorptions in the ranges, 1331 - 1317 cm−1 and 1157 - 1139 cm−1, respectively. The sulphonamides exhibit S-N stretching vibrations in the range, 926 - 833 cm−1. The effect of substitution in the phenyl ring in terms of electron withdrawing and electron donating groups is non-systematic. The 1H and 13C chemical shifts of N-(substituted phenyl)-methanesulphonamides are assigned to various protons and carbons of the compounds. Further, incremental shifts of the ring protons and carbons due to CH3SO2- and CH3SO2NH- groups in the N-(phenyl)-methanesulphonamide are computed and used to calculate the 1H and 13C chemical shifts of various protons and carbons of N-(substituted phenyl)-methanesulphonamides, by adding substituent contributions to the corresponding aromatic proton or carbon chemical shifts of either aniline, substituted anilines, benzene or substituted benzenes, in different ways, as per the principle of substituent addition. The computed values by different procedures agree well with each other and with the experimental chemical shifts. The correlation of these incremental shifts with the Hammett substituent parameters is poor.

Correlation of Mössbauer Quadrupole Splitting (ΔΕQ) and Infrared Cyanide Frequency Separation in Alkali Metal Ferricyanides

1975 ◽  
Vol 30 (1-2) ◽  
pp. 96-98 ◽  
Author(s):  
A. N. Garg
Keyword(s):  
Solid State ◽  
Alkali Metal ◽  
Quadrupole Splitting ◽  
Infrared Spectra ◽  
Room Temperature ◽  
Frequency Separation ◽  
Hydrogen Atoms ◽  
Stretching Vibrations ◽  
Hydrogen Bonded

Mössbauer and infrared spectra of the alkali metal ferricyanides M3I [Fe(CN)6] · nH2O, where MI = H, Li and Na were studied at room temperature. All the three compounds displayed a doublet with small quadrupole splitting (ΔΕQ). Infrared spectra of these compounds in solid state gave two frequencies for C=N stretching vibrations with their separation (Δv) in increasing order which was found to be linearly correlated with ΔE Q. A plausible explanation has been given in terms of the interaction of Li+ and Na+ cations with the CN- ligands of octahedrally symmetric ferricyanide anion [Fe(CN)6]3- similar to that of hydrogen atoms which are hydrogen bonded in H3Fe(CN)6.

Infrared spectra of lignin model compounds and of lignins from Eucalyptus regnans

1966 ◽  
Vol 19 (12) ◽  
pp. 2285 ◽  
Author(s):  
AJ Michell
Keyword(s):  
Solid State ◽  
Infrared Spectra ◽  
Carboxyl Groups ◽  
Hydroxyl Groups ◽  
Model Compounds ◽  
Eucalyptus Regnans ◽  
Lignin Model Compounds ◽  
Solvent Dependence ◽  
Lignin Model ◽  
Stretching Vibrations

Infrared spectra in the O-H and C=O stretching regions of lignin model compounds and of lignins isolated in various ways from Eucalyptus regnans F. Muell. have been obtained for samples both in the solid state and in solution. The effects of solvents on the stretching vibrations of free and intramolecularly bonded hydroxyl groups have been examined for a number of the model compounds, including some in which the groups are subject to steric hindrance. The results have been used to interpret the O-H stretching frequencies of the lignins in the same solvents. In the lignin macromolecules all hydroxyl groups appear to be involved in hydrogen bonds, and the phenolic groups are sterically hindered.��� Different solvent effects have also been observed in model compounds between the C=O stretching frequencies of carboxyl groups and those of aldehyde, ketone, and ester groups. The solvent dependence of the 1665 cm-1 band in the lignin spectra supports its assignment to a conjugated aldehyde or ketone group, but the dependence of the 1725 cm-1 band suggests that both carboxyl and carbony1 groups may contribute to the band envelope.

Preparation and infrared spectra of some ammine complexes of ruthenium(II) and ruthenium(III)

1967 ◽  
Vol 45 (12) ◽  
pp. 1337-1341 ◽  
Author(s):  
A. D. Allen ◽  
C. V. Senoff
Keyword(s):  
Solid State ◽  
Infrared Spectra ◽  
Absorption Bands ◽  
Ammine Complexes ◽  
Stretching Vibrations

The infrared spectra of the complexes [Ru(NH3)6]X2 and [Ru(NH3)6]X3, where X = Cl−, Br−, I−, BF4− and [Ru(NH3)5X]X2, where X = Cl−, Br− and I−, have been measured in the solid state between 4 000 – 250 cm−1. Assignments have been made for the observed absorption bands. The metal–nitrogen stretching vibrations were observed between 485–424 cm−1 for the ruthenium(III) complexes but were not observed for the ruthenium(II) complexes in this region.

The vibrational spectra of 4-pyridone, and its 2,3,5,6-tetradeutero, N-deutero, N-methyl, N-cyano, and 3,5-dihalogeno derivatives. Mixing between C=C and C=O stretching vibrations

1969 ◽  
Vol 22 (12) ◽  
pp. 2581 ◽  
Author(s):  
BD Batts ◽  
E Spinner
Keyword(s):  
Raman Spectra ◽  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Parent Compound ◽  
The Other ◽  
Medium Effects ◽  
Oxide Structure ◽  
Stretching Vibrations ◽  
Electron Withdrawing Substituents

The infrared spectra of the above compounds, and the Raman spectra of the parent compound and its 2,3,5,6-D4, 1-D, and 1-Me derivatives have been determined. The effects of electron-withdrawing substituents, N- methylation, and deuteration on the two intense infrared bands in the 1480-1650 cm-1 region are not compatible with one being a C=O and the other a C=C stretching band. These two vibrations must be extensively mixed; occasionally very pronounced medium effects, which are not straightforward, are observed for one or both of these bands. The spectra are not in accord with a mostly zwitterionic (N-protonated pyrid-4-oxide) structure (II) of 4-pyridone. Band assignments are made for the parent compound.

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