scholarly journals Reactions of iron carbonyls with various ligands in the presence of chloroform. A new method for the preparation of iron halide complexes

1968 ◽  
Vol 46 (10) ◽  
pp. 1773-1779 ◽  
Author(s):  
P. P. Singh. ◽  
R. Rivest
Keyword(s):  
Magnetic Susceptibility ◽  
Spectral Study ◽  
New Method ◽  
Tetrahedral Configuration ◽  
Iron Carbonyls ◽  
Infrared Spectral ◽  
Halide Complexes ◽  
Bond Strengths ◽  
Mechanism Of The Reaction

Iron halide complexes of the type FeCl2•2L (L = CH3CONH2, HCONH2, HCONHCH3) and FeCl3•L (L = (C6H5)3P, (C6H5)3As, C6H5NH2, C6H5CONH2) have been prepared by the reaction of iron carbonyls with various ligands in chloroform as solvent. The mechanism of the reaction and the effect of other solvents have also been studied. The magnetic susceptibility measurements and infrared spectral study (4000–200 cm−1) suggest that these complexes have tetrahedral configuration. The possible site of bonding in ligands and infrared assignments for Fe—O, Fe—Cl, Fe—N, Fe—P, Fe—As bands have been given. The relative Fe—O bond strengths in various amide complexes have been determined on the basis of metal–oxygen stretching frequency and of shifts in carbonyl stretching frequency.

Infrared and electronic spectral studies of 2-thiazolidinethione complexes of Co(II) halides

1968 ◽  
Vol 46 (14) ◽  
pp. 2361-2368 ◽  
Author(s):  
P. P. Singh ◽  
R. Rivest
Keyword(s):  
Magnetic Susceptibility ◽  
Spectral Study ◽  
Spectral Studies ◽  
Ligand Field ◽  
Infrared Spectral ◽  
Halide Complexes ◽  
Probable Site ◽  
Ligand Field Parameters ◽  
Electronic Spectral Study

Cobalt(II) halide complexes [CoX2•2L] (X = Cl, Br, I and L = 2-thiazolidinethione) and [CoL4] (ClO4)2 have been prepared. The infrared spectral study suggests that the probable site of bonding in the ligand is nitrogen. The results of electronic spectral study and magnetic susceptibility measurements indicate that the complexes are tetrahedral in structure. The various ligand field parameters Dq, B′, and β show about 80% covalency in the complexes and suggest a weak ligand field.

An investigation of some iron halide complexes by Mössbauer spectroscopy

1969 ◽  
Vol 47 (8) ◽  
pp. 1351-1354 ◽  
Author(s):  
T. Birchall
Keyword(s):  
Mössbauer Spectroscopy ◽  
Mossbauer Spectroscopy ◽  
Tetrahedral Configuration ◽  
Iron Carbonyls ◽  
Mößbauer Spectroscopy ◽  
Halide Complexes

The products of the reaction between iron carbonyls and various ligands have been examined by Mössbauer spectroscopy. With triphenylphosphine and triphenylarsine, complexes of Fe(III) in a tetrahedral configuration are produced. In all other cases the complexes contain Fe(II), and it is suggested that these are not monomeric, but are chlorine bridged complexes.

Infrared spectral study of pentaco-ordinated cobalt (II) complexes of thiosemicarbazones

1976 ◽  
Vol 32 (3) ◽  
pp. 553-557 ◽  
Author(s):  
M.J.M Campbell ◽  
R. Grzeskowiak ◽  
R. Thomas ◽  
M. Goldstein
Keyword(s):  
Spectral Study ◽  
Infrared Spectral

1,3,4-Thiadiazole-2,5-dithiol as a complexing agent. Complexes of RuIII, RuII, RhIII, PdIV IrIII and PtIV

1975 ◽  
Vol 28 (4) ◽  
pp. 763 ◽  
Author(s):  
MR Gajendragad ◽  
U Agarwala
Keyword(s):  
Magnetic Susceptibility ◽  
Metal Ions ◽  
Spectral Data ◽  
Crystal Field ◽  
Complexing Agent ◽  
Chemical Analyses ◽  
Infrared Spectral ◽  
Crystal Field Parameters

Complexes of RuIII, RuII, RhIII, PdIV, IrIII and PtIV with 1,3,4-thiadiazole- 2,5-dithiol have been prepared. Probable structures for the complexes have been proposed on the basis of chemical analyses, magnetic susceptibility and electronic and infrared spectral data. Crystal field parameters have been calculated which are in accordance with the structures proposed. In every complex the ligand behaves as a unidentate towards two metal ions.

Studies of metal halides. Magnetic properties of some molybdenum(III) binuclear complex halides

1969 ◽  
Vol 22 (1) ◽  
pp. 121 ◽  
Author(s):  
IE Grey ◽  
PW Smith
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Binuclear Complex ◽  
Magnetic Behaviour ◽  
Metal Halides ◽  
Metal Interaction ◽  
Metal Metal ◽  
Halide Complexes

The variation of magnetic susceptibility with temperature for a number of binuclear halide complexes of molybdenum of formula A3IMo2X9 (A = Cs, Et4N, Et3NH; X = Cl, Br) has been studied over the range 90-400�K. The magnetic behaviour is consistent with that expected for magnetically isolated exchange-coupled pairs of molybdenum atoms. The coupling is interpreted as occurring mainly by direct metal-metal interaction rather than superexchange.

Zinc Complexes of Dimethyl(phthalimidomethyl)phosphine Oxide

1994 ◽  
Vol 49 (2) ◽  
pp. 258-262
Author(s):  
Sabi Varbanov ◽  
Elena Russeva ◽  
Andrei Ganchev
Keyword(s):  
Oxygen Atom ◽  
Phosphine Oxide ◽  
Nmr Spectra ◽  
Zinc Complexes ◽  
X Ray ◽  
H Nmr ◽  
Infrared Spectral ◽  
Phosphoryl Oxygen ◽  
Halide Complexes ◽  
Powder Analysis

A series o f zinc complexes of dimethyl(phthalimidomethyl)phosphine oxide (DPPO, L) have been synthesized: ZnX2L2, where X = Cl, Br, I or NO3. The complexes are characterized by elemental analysis, infrared and 1H NMR spectra and X-ray powder analysis. Infrared spectral data show that L is coordinated to zinc via the phosphoryl oxygen atom. The zinc halide complexes are found to be isostructural, while the pattern o f Zn(NO3)2L2 differs considerably from those o f halide complexes.

Infrared and Electronic Spectral Studies of Cobalt(II) and Nickel(II) Complexes of N-Allyl Urea and N-Allyl Thiourea

1972 ◽  
Vol 50 (16) ◽  
pp. 2603-2609 ◽  
Author(s):  
P. P. Singh ◽  
I. M. Pande
Keyword(s):  
Magnetic Susceptibility ◽  
Electronic Spectra ◽  
Electrical Conductance ◽  
Spectral Studies ◽  
Ligand Field ◽  
Magnetic Susceptibility Data ◽  
Susceptibility Data ◽  
Halide Complexes ◽  
Ligand Field Parameters ◽  
Allyl Thiourea

Complexes of N-allyl urea (NAU) and N-allyl thiourea (NATU) with cobalt (II) and nickel (II) halides and perchlorates have been prepared and characterized by electrical conductance, magnetic susceptibility, infrared and electronic spectra. Infrared spectra suggest coordination in NAU through oxygen and in NATU through nitrogen. The electronic spectra and magnetic susceptibility data indicate tetrahedral and octahedral stereochemistry for cobalt (II) and nickel (II) halide complexes, respectively. The various ligand field parameters Dq, B′, and β calculated for these complexes show about 25 and 11% covalency for Co (II) and Ni (II), respectively, and suggest a weak ligand field.

Electronic and infrared spectral study of chromium (III) derivatives of the type [Cr(NCS)4.(ligand)2]-

1967 ◽  
Vol 6 (9) ◽  
pp. 1625-1631 ◽  
Author(s):  
Martin Arthur Bennett ◽  
Robin J. H. Clark ◽  
Arthur D. J. Goodwin
Keyword(s):  
Spectral Study ◽  
Infrared Spectral ◽  
Derivatives Of

Synthesis, TG, DSC and infrared spectral study of NiMn2(C4H4O4)3·6N2H4

2006 ◽  
Vol 86 (3) ◽  
pp. 605-608 ◽  
Author(s):  
Reema A. Porob ◽  
Sitara Z. Khan ◽  
S. C. Mojumdar ◽  
V. M. S. Verenkar
Keyword(s):  
Spectral Study ◽  
Infrared Spectral
Sign in / Sign up

Export Citation Format

Share Document