scholarly journals Some Studies in Inorganic Complexes. XIII. Chromium(III) and Molybdenum(III) with 2-Aminomethylpyridine (2-Picolylamine)

1962 ◽  
Vol 15 (2) ◽  
pp. 232 ◽  
Author(s):  
GJ Sutton
Keyword(s):  
Magnetic Moments ◽  
Chelating Ligand ◽  
Inorganic Complexes

A study has been made of complexes of chromium(III) and molybdenum(III) with the chelating ligand 2-aminomethylpyridine (2-picolylamine). They are of the type Crpic33+, Crpic2(H2O)23+, and Mopic33+, in which pic is the ligand 2-picolylamine. Conductance measurements in methanol and nitromethane are in agreement with their structures as six-coordinate complexes. The magnetic moments were found to be in the vicinity of 3.7 B.M. in all oases, showing that the chromium(III) and manganese(III) atoms are spin-free. The following salts were prepared and studied : [Crpic3]2[SO4]3.3H2O, [Crpic3]Cl3.3H2O, [Crpic2(H2O)2]Br3, [Crpic2(H2O)2][ClO4]3, and [Mopic3][ClO4]3.3H2O.

Electrochemical studies of reactive polyanionic chelating ligand complexes in liquid sulfur dioxide. Formation of highly oxidizing inorganic complexes

1987 ◽  
Vol 26 (7) ◽  
pp. 1157-1160 ◽  
Author(s):  
Fred C. Anson ◽  
Terrence J. Collins ◽  
Stephen L. Gipson ◽  
John T. Keech ◽  
Terry E. Krafft
Keyword(s):  
Sulfur Dioxide ◽  
Electrochemical Studies ◽  
Liquid Sulfur ◽  
Chelating Ligand ◽  
Inorganic Complexes

Some studies in inorganic complexes. XVII. 2-Thioamidopyridine complexes of copper(I) and copper(II)

1964 ◽  
Vol 17 (12) ◽  
pp. 1360 ◽  
Author(s):  
GJ Sutton
Keyword(s):  
Copper Complexes ◽  
Magnetic Measurements ◽  
Chelating Ligand ◽  
Absorption Studies ◽  
Inorganic Complexes

The following copper complexes of the chelating ligand 2-thioamidopyridine (thiopic) have been prepared and studied: [Cuthiopic2][CuX2], where X = Cl, Rr, I, and SCN (two isomers); [Cuthiopic2]I; [Cuthiopic2ClO4].ClO4.H2O; [Cuthiopic2OH]ClO4; [Cuthiopic2NO3]NO3.H2O; [Cuthiopic2NO3]PF6.H2O; and [Cuthiopic2][PF6]2. 4H2O. Conductance measurements in nitrobenzene, nitromethane, and ethanol; and absorption studies in the infrared, visible, and ultraviolet regions of the spectrum were carried out and magnetic measurements were also determined.

Some Studies in Inorganic Complexes. VIII. Cobalt(II) and Cobalt(III) with 2-Picolylamine

1960 ◽  
Vol 13 (4) ◽  
pp. 473 ◽  
Author(s):  
GJ Sutton
Keyword(s):  
Magnetic Susceptibility ◽  
Absorption Spectra ◽  
Visible Region ◽  
Cobalt Atom ◽  
Octahedral Complex ◽  
Solution Stability ◽  
Chelating Ligand ◽  
Inorganic Complexes

Complexes of cobalt(II) and (III) with the chelating ligand 2-picolylamine have been prepared and studied. Those of cobalt(II) are Copic3(ClO4)2 and CopicI2.2H2O, where pic is the ligand 2-picolylamine. Measurements of magnetic susceptibility have shown that in both of these the cobalt atom is spin-free, giving rise to momenta of 4.8 and 4.9B.M. respectively. By means of conductance measurements in water, methanol, nitromethane, and nitrobenzene, it has been shown that the former is an octahedral complex and the latter, whilst probably octahedral, could be tetrahedral. The cobalt(III) complexes described include [Copic3](ClO4)3, [Copic2Cl2]Cl.HCl, [Copic2Cl2]Cl, [Copic2(NO2)2]NO3.�H2O, [Copic2(NO2)2]NO2, and [Copic2(H2O)2](ClO4)2. By means of the above measurements it has been shown that all the latter are diamagnetic octahedral complexes. A study of absorption spectra in the visible region, in the above solvents where possible, has also been made and the results correlated to solution stability. Attempts to resolve the Copic33+ complex into its enantiomorphs were unsuccessful.

Some studies in inorganic complexes. XXVI. Complexes of 6-Methyl-2-thioamidopyridine

1971 ◽  
Vol 24 (5) ◽  
pp. 919 ◽  
Author(s):  
GJ Sutton
Keyword(s):  
Infrared Spectra ◽  
Magnetic Measurements ◽  
Visible Spectrum ◽  
Sulphur Atom ◽  
Chelating Ligand ◽  
Inorganic Complexes

Several complexes of the chelating ligand 6-methyl-2-thioamidopyridine have been prepared end studied. Infrared spectra indicate that the sulphur atom of the thioamido group is bonding in the complexes: [CoL2(H2O)2][ClO4]2, [NiL2Br2], [CuL2]I, [Ru2L4Cl2O]Cl2, [OsL2Cl2], [AuL][AuCl1], and [HgLI2] whereas nitrogen bonding occurs with [FeLCl3]2, [ZnL3][ClO4]2, [SnLI4], and the deprotonated species [In(L-H)3]. Copper(II) was reduced to copper(I), e.g. [CuL2][CuBr2]. Studies in the visible spectrum, magnetic measurements, and conductances in both nitrobenzene and dimethylformamide were also made.

Some studies in inorganic complexes. III. Antimony(III), Arsenic(III), and Phosphorus (III)

1958 ◽  
Vol 11 (4) ◽  
pp. 420 ◽  
Author(s):  
GJ Sutton
Keyword(s):  
Molecular Weight ◽  
Chelating Ligand ◽  
Inorganic Complexes

A study has been made of complexes of the halides of antimony, arsenic, and phosphorus with the chelating ligand o-phenylenebisdimethylarsine. Conductivity and molecular weight determinations in nitrobenzene show that these are &covalent monomers of the type SbX3.D, AsX3D, and PX3.D, in which X is halogen and D is diarsine. However, in this solvent there is a progressive tendency towards ionization from Sb to P and from Cl to I, so that the iodo complexes of arsenic and phosphorus are partly ionized as [AsI2D]+I- and [PI2D]+I- respectively. This is also in accordance with the preparation of the perchlorate [AsI2D]+[ClO4]-.H2O from the complex [AsI2D]+I-. A study was also made of the phenanthrolinium salts [phenanH.H2O]+[SbX4]-, although no compounds were obtained in which the base is coordinated to the metal.

Some Studies in Inorganic Complexes. VI. Nickel(II) with 2-Picolylamine

1960 ◽  
Vol 13 (1) ◽  
pp. 74 ◽  
Author(s):  
GJ Sutton
Keyword(s):  
Solid State ◽  
Absorption Spectra ◽  
Magnetic Measurements ◽  
Visible Spectrum ◽  
Ultraviolet Region ◽  
Near Ultraviolet ◽  
Chelating Ligand ◽  
Inorganic Complexes ◽  
Solvent Molecules

Complexes of the type Nipic2X2, Nipic3X2.nH2O, and Nipic3(ClO4)2.H2O have been prepared and studied, where X is Cl, Br, or I and pic is the chelating ligand 2-picolylamine. Conductance measurements in nitrobenzene, nitromethane, methanol, and water show that the blue compounds Nipic2X2, whilst being hexacovalent complexes in the solid state, are progressively ionized in the respective solvents as halogen is replaced by solvent molecules. Conductance measurements also verified a hexacovalent structure for the Ni pic32+ ion complex whose salts are bi-univalent electrolytes. Magnetic measurements show that a11 the complexes are paramagnetic with a mean moment of 3.0 B.M. Their absorption spectra in the near ultraviolet region are characteristic of that of the ligand. A study in the visible spectrum was also made.

scholarly journals Spectroscopic, magnetic and thermal behaviour of the 2, 3, 4-trimethoxybenzoates of heavy lanthanides(III) and yttrium(III)

2004 ◽  
Vol 69 (3) ◽  
pp. 195-204 ◽  
Author(s):  
Wieslawa Ferenc ◽  
Beata Bocian ◽  
Agnieszka Walkow-Dziewulska
Keyword(s):  
Thermal Behaviour ◽  
Magnetic Moments ◽  
Carboxylate Group ◽  
Thermal Stabilities ◽  
Solubility In Water ◽  
Temperature Range ◽  
Heavy Lanthanide ◽  
Air Atmosphere ◽  
Chelating Ligand ◽  
Heavy Lanthanides

The complexes of 2,3,4-trimethoxybenzoic acid with Tb(III), Dy(III), Ho(III) Er(III), Tm(III), Yb(III), Lu(III) and Y(III) are crystalline, anhydrous salts with colours typical of the M(III) ions. The carboxylate group is probably a bidenate, chelating ligand. The thermal stabilities of the complexes were examined under an air atmosphere in the temperature range 293?1273 K. The solubility in water at 293 K for all the heavy lanthanide(III) and yttrium(III) complexes are in the order of 10-3 mol dm-3. The magnetic moments of the complexes were determined in the temperature range 77?300 K.

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