Correlation of Magnetic Susceptibility and Infrared Spectra of FeF2

1968 ◽  
Vol 39 (2) ◽  
pp. 1141-1142 ◽  
Author(s):  
J. W. Stout ◽  
M. I. Steinfeld ◽  
M. Yuzuri
Keyword(s):  
Magnetic Susceptibility ◽  
Infrared Spectra

Basic halides and related species of molybdenum(III). II. Spectroscopic and magnetic properties of MoOF(H2O)3 and MoOCl(H2O)3

1976 ◽  
Vol 29 (4) ◽  
pp. 717 ◽  
Author(s):  
DJ Stabb
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Absorption Spectroscopy ◽  
Infrared Spectra ◽  
Electronic Spectra ◽  
Related Species ◽  
Bound Water ◽  
Temperature Range ◽  
Field Dependent

Two basic halides of molybdenum(111), namely MoOF(H2O)3 and MoOCl(H2O)3 (some samples containing additional loosely bound water), were investigated by absorption spectroscopy in the range 200-50000 cm-1, and by magnetic susceptibility measurements over a temperature range of 100-300 K. Infrared spectra showed bands at about 670 and 1600 cm-l, but not in the range 800-1100 cm-1. Electronic spectra showed poorly defined bands superimposed on strong general absorption. Very weak paramagnetism was observed: this was field dependent. The results are interpreted to show the compounds to be oxygen-bridged polymers [MOX(H2O)3O]n, rather than species containing Mo=O or Mo-0-H groups.

Synthesis, structure, and properties of poly-bis(μ-diethylphosphinato)copper(II)

1982 ◽  
Vol 60 (15) ◽  
pp. 2017-2022 ◽  
Author(s):  
Katherine W. Oliver ◽  
Steven J. Rettig ◽  
Robert C. Thompson ◽  
James Trotter
Keyword(s):  
Molecular Structure ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Infrared Spectra ◽  
Field Model ◽  
Direct Methods ◽  
Coordination Geometry ◽  
Structure And Properties ◽  
Tetrahedral Coordination ◽  
Full Matrix

The preparation, magnetic properties, electronic and infrared spectra, and molecular structure of poly-bis(μ-diethylphosphinato)copper(II) are described. Crystals of poly-bis(μ-diethylphosphinato)copper(II) are triclinic, a = 7.700(1), b = 9.807(1), c = 10.101(1) Å, α = 90.48(1), β = 104.77(1), γ = 112.21(1)°, Z = 2, space group [Formula: see text]. The structure was solved by direct methods and was refined by full-matrix least-squares procedures to R = 0.025 and Rw = 0.032 for 3491 reflections with I ≥ 3σ(I). The polymeric structure consists of Cu atoms with flattened tetrahedral coordination geometry linked by double phosphinate bridges. Mean bond lengths (corrected for libration) are: Cu—O, 1.924(3), P—O, 1.526(4), and P—C, 1.807(4) Å. Assignment of the electronic spectrum using a crystal field model gives Dq = 1665 cm−1 and Cp = 1800 cm−1. Magnetic susceptibility studies give no evidence for magnetic concentration over the temperature range 80 to 300 K.

Some studies in inorganic complexes. XX. Further reactions of 2-thioaminopyridine

1966 ◽  
Vol 19 (11) ◽  
pp. 2059 ◽  
Author(s):  
GJ Sutton
Keyword(s):  
Magnetic Susceptibility ◽  
Nitrogen Atom ◽  
Absorption Spectra ◽  
Infrared Spectra ◽  
Visible Region ◽  
Metal Chelates ◽  
Sulphur Atom ◽  
Inorganic Complexes

The following complexes of 2-thioamidopyridine (thiopic) were prepared and studied : [RhCl2 thiopic2]Cl,2H2O; [RhCl2 thiopic2][RhCl4 thiopic]; [RhCl, thiopic2]ClO4; [RhBr2 thiopic2]ClO4; [RhI2 thiopic2]ClO4,H2O; [Rh thiopic3][ClO4]3; [Ag thiopic]ClO4; [AuCl2 thiopic][AuCl4]; [Au thiopic2][AuI2]; [RuCl2 thiopic2], C2H5OH; [Os thiopic3]Br3; [Cr thiopic3]Br3; [MnI3 thiopic2]; [In thiopic3]Cl3,H2O. The following substances were also prepared and studied: [RhI2 pic2]I2,H2O; [RhCl, en,]Cl,H2O; [Rh phenan3]Br3 (where pic is 2-aminomethylpyridine, en is ethylenediamine, and phenan is 1,10-phenanthroline). The conductances of all of the aforementioned substances in NN?-dimethylformamide agreed with their structures as metal chelates as indicated. Studies of absorption spectra in the visible region were also made, and infrared spectra showed that bonding had occurred through the sulphur atom of the -C(=S)NH, group in the case of rhodium(III), gold(I), gold(III), ruthenium(II), osmium(III), and silver(I) complexes, whereas with chromium(III), manganese(II), and indium(III) coordination was by the nitrogen atom. Measurements of magnetic susceptibility showed that the rhodium(III), gold(I), gold(III), ruthenium(II), and osmium(III) complexes were spin-paired, whereas those of chromium(III) and manganese(II) were spin free.

scholarly journals Coordinating Properties of the Fluorosulfate Ion. Tetrakis(pyridine) Complexes of Zinc(II), Copper(II), and Nickel(II) Fluorosulfates

1974 ◽  
Vol 52 (18) ◽  
pp. 3218-3228 ◽  
Author(s):  
Carl S. Alleyne ◽  
Robert C. Thompson
Keyword(s):  
Electrical Conductivity ◽  
Magnetic Susceptibility ◽  
Metal Ions ◽  
Electronic Properties ◽  
Infrared Spectra ◽  
Copper Complex ◽  
Electronic Spectra ◽  
Nickel Complexes ◽  
Ionic Dissociation ◽  
Distorted Octahedral

Complexes of the type M(py)4(SO3F)2 (py = pyridine, M = Ni, Cu, Zn) have been prepared and characterized. Infrared spectra of all three complexes, electronic spectra and magnetic susceptibility studies of the copper and nickel complexes, and e.p.r. studies of the copper complex are reported. The complexes have tetragonally distorted octahedral structures with fluorosulfate groups coordinated to metal ions as unidentate ligands. To facilitate comparison of the coordinating action of the fluorosulfate ion with other polyatomic anions the complexes, Cu(py)4X2 (X = ClO4−, BF4−, NO3−, p-CH3C6H4SO3−, CF3CO2−) have been prepared and their electronic properties examined. The studies indicate that the coordinating strength of SO3F− towards metals is greater than ClO4−, BF4−, and NO3− but less than p-CH3C6H4SO3− and CF3CO2−. Electrical conductivity studies on solutions in acetonitrile indicate a correlation between the relative coordinating strength of the anion in a given complex and the extent to which the complex undergoes ionic dissociation in this solvent.

The magnetic properties of rhenium halides. II. Rhenium trichloride

1965 ◽  
Vol 18 (4) ◽  
pp. 441 ◽  
Author(s):  
D Brown ◽  
R Colton
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Low Temperature ◽  
Powder Diffraction ◽  
Infrared Spectra ◽  
X Ray ◽  
Temperature Modification ◽  
Rhenium Halides

Magnetic susceptibility measurements have been made on anhydrous rhenium trichloride and the dihydrate, ReCl3,2H2O. Infrared spectra and X-ray powder diffraction studies are reported for anhydrous rhenium trichloride and the possible existence of a low temperature modification of the trichloride is discussed.

CHEMISTRY OF THE COMPLEXES OF URANYL AND PLUTONYL IONS WITH ORGANIC LIGANDS

1965 ◽  
Vol 43 (7) ◽  
pp. 2052-2058 ◽  
Author(s):  
P. V. Balakrishnan ◽  
S. K. Patil ◽  
H. D. Sharma ◽  
H. V. Venkatasetty
Keyword(s):  
Magnetic Susceptibility ◽  
Infrared Spectra ◽  
Organic Ligands ◽  
Uranyl Complexes

A series of complexes of uranyl and plutonyl ions with different organic ligands have been prepared and investigated by infrared spectra and magnetic susceptibility measurements. The uranyl complexes were found to be weakly diamagnetic and the plutonyl complex was found to be paramagnetic. Two ligand series are defined on the basis of the infrared asymmetric stretching frequency of the uranyl and plutonyl groups.

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