Infrared spectra of complexes of isoquinoline with cobalt(II), nickel(II), and zinc(II) sulphates

1968 ◽  
Vol 21 (2) ◽  
pp. 353 ◽  
Author(s):  
IS Ahuja
Keyword(s):  
Solid State ◽  
Infrared Spectra ◽  
Polymeric Structures

The complexes formed by isoquinoline with cobalt(11), nicke1(11), and zinc(11) sulphates have been prepared. These complexes have been examined spectroscopically in the solid state and the possible structures discussed. It is suggested that these complexes are polymeric structures. Allocations for the possible metal-oxygen modes have also been made.

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.

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.

X-ray Structure Refinement and Vibrational Spectroscopy of Ca8Gd2 (PO4)6 O2

2013 ◽  
Vol 12 (10) ◽  
pp. 719-726
Author(s):  
R. Ayadi ◽  
Mohamed Boujelbene ◽  
T. Mhiri
Keyword(s):  
Solid State ◽  
General Formula ◽  
Vibrational Spectroscopy ◽  
Powder Diffraction ◽  
Infrared Spectra ◽  
Solid State Reaction ◽  
Structure Refinement ◽  
Unit Cell ◽  
Cell Group ◽  
X Ray

The present paper is interested in the study of compounds from the apatite family with the general formula Ca10 (PO4)6A2. It particularly brings to light the exploitation of the distinctive stereochemistries of two Ca positions in apatite. In fact, Gd-Bearing oxyapatiteCa8 Gd2 (PO4)6O2 has been synthesized by solid state reaction and characterized by X-ray powder diffraction. The site occupancies of substituents is0.3333 in Gd and 0.3333 for Ca in the Ca(1) position and 0. 5 for Gd in the Ca (2) position.  Besides, the observed frequencies in the Raman and infrared spectra were explained and discussed on the basis of unit-cell group analyses.

Transition metal acetates

1968 ◽  
Vol 46 (22) ◽  
pp. 3443-3446 ◽  
Author(s):  
D. A. Edwards ◽  
R. N. Hayward
Keyword(s):  
Solid State ◽  
Thermogravimetric Analysis ◽  
Transition Metal ◽  
Infrared Spectra ◽  
Magnetic Moments ◽  
Acetate Group ◽  
Visible Spectra

Some anhydrous transition metal acetates (Mn(II), Co(II), Cu(II), Ni(II), Zn(II), Ag(I), Mo(II), Ce(III), La(III)) have been prepared and their infrared spectra measured in the solid state. The infrared spectra have been related to established modes of bonding of the acetate group to metals. Thermal decompositions of the anhydrous acetates have been investigated by thermogravimetric analysis; magnetic moments and visible spectra have been measured.

scholarly journals Far infrared spectra of solid state aliphatic amino acids in different protonation states

2010 ◽  
Vol 132 (11) ◽  
pp. 115105 ◽  
Author(s):  
Aurélien Trivella ◽  
Thomas Gaillard ◽  
Roland H. Stote ◽  
Petra Hellwig
Keyword(s):  
Amino Acids ◽  
Solid State ◽  
Infrared Spectra ◽  
Far Infrared ◽  
Far Infrared Spectra

pH-Driven Conformational Switching of Quinoxaline Cavitands in Polymer Matrices

Synlett ◽  
2018 ◽  
Vol 29 (19) ◽  
pp. 2503-2508 ◽  
Author(s):  
E. Dalcanale ◽  
M. Torelli ◽  
I. Domenichelli ◽  
A. Pedrini ◽  
F. Guagnini ◽  
...  
Keyword(s):  
Solid State ◽  
Polymer Matrices ◽  
Switching Behavior ◽  
Butyl Methacrylate ◽  
Conformational Switching ◽  
Conformational Studies ◽  
New Class ◽  
Solid Matrices ◽  
Linear Poly ◽  
Polymeric Structures

While pH-driven interconversion of tetraquinoxaline cavitands (QxCav) from vase to kite conformation has been extensively studied both in solution and at interfaces, cavitands behavior in solid matrices is still unexplored. Therefore, the synthesis of a new class of quinoxaline cavitand based copolymers is here reported; a soluble linear poly(butyl methacrylate) (PBMA) and an insoluble cross-linked polydimethylsiloxane (PDMS), ensuring a convenient incorporation of the switchable unit, were chosen as polymer matrices. Conformational studies, performed both in solution and at the solid state, confirmed the retention of vase → kite switching behavior when moving from monomeric units to polymeric structures.

Spectroscopic Studies with N-Chloroarylsulphonamides: IR and 1H, 13C and 23Na Nmr Spectra of Sodium Salts of N-Chloro-Mono- and Di-Substituted-Benzenesulphonamides, 4-X-C6H4SO2NANCl (X = H; CH3; C2H5; F; Cl; Br; I or NO2) and i-X, j-YC6H3SO2NANCl (i-X, j-Y = 2,3-(CH3)2; 2,4-(CH3)2; 2,5-(CH3)2; 2-CH3, 4-Cl; 2-CH3, 5-Cl; 3-CH3, 4-Cl; 2,4-Cl2 or 3,4-Cl2)

2003 ◽  
Vol 58 (1) ◽  
pp. 51-56 ◽  
Author(s):  
◽  
J. D. D’Souza ◽  
B. H. Arun Kumar
Keyword(s):  
Solid State ◽  
Chemical Shift ◽  
Infrared Spectra ◽  
Phenyl Ring ◽  
Nmr Spectra ◽  
Chemical Shifts ◽  
Spectroscopic Studies ◽  
Sodium Salts ◽  
Experimental Chemical Shift ◽  
23Na Nmr

In an effort to introduce N-chloroarylsulphonamides of different oxydising strengths, sixteen sodium salts of N-chloro-mono- and di-substituted benzenesulphonamides of the configuration, 4- X-C6H4SO2NaNCl (where X = H; CH3; C2H5; F; Cl; Br; I or NO2) and i-X, j-YC6H3SO2NaNCl (where i-X, j-Y = 2,3-(CH3)2; 2,4-(CH3)2; 2,5-(CH3)2; 2-CH3,4-Cl; 2-CH3,5-Cl; 3-CH3,4-Cl; 2,4- Cl2 or 3,4-Cl2) are prepared, characterized through their infrared spectra in the solid state and NMR spectra in solution. The υN-Cl frequencies vary in the range 950 - 927 cm−1. Effects of substitution in the benzene ring in terms of electron donating and electron withdrawing groups have been considered, and conclusions drawn. The chemical shifts of aromatic protons and carbon-13 in all the N-chloroarylsulphonamides have been calculated by adding substituent contributions to the shift of benzene. Considering the approximation employed the agreement between the calculated and experimental chemical shift values for different protons or carbon-13 is quite good. Effects of phenyl ring substitution on chemical shift values of both 1H and 13C are also graphically represented in terms of line diagrams.

Sign in / Sign up

Export Citation Format

Share Document