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. 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.

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. 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.

Some studies in inorganic complexes. XXV. Cobalt(II) and nickel(II) complexes of 2-Acetamidopyridine and 2-Aminomethyl-6-rnethylpyridine, and the cobalt(II) complex of 2-Methylpyridine-6-carboxylic acid

1969 ◽  
Vol 22 (9) ◽  
pp. 1841 ◽  
Author(s):  
KH Shaw ◽  
GJ Sutton
Keyword(s):  
Magnetic Properties ◽  
Carboxylic Acid ◽  
Absorption Spectra ◽  
Infrared Spectra ◽  
Reflectance Spectra ◽  
Inorganic Complexes

Complexes of cobalt(II) and nickel(II) with the ligands 2- acetamidopyridine (acpy) and 2-aminomethyl-6-methylpyridine (mepic) have been prepared and studied. They included [Co(acpy)2X2], [Co(mepic)2X2], [Ni(acpy)2X2], and [Ni-(mepic)2X2], in which X is Cl, Br, I, or NCS; [Co(acpy)2(NO3)2], [Co(mepic)2(NO3)2], [Ni(acpy)2(NO3)2], [Ni(mepic)3NO3]NO3, [Co(acpy)3](ClO4)2, [Co(mepic)3](ClO4)2, [Co(mepic)3](CoCl4), [Ni(acpy)2(H2O)2](ClO4)2, and [Ni(mepic)2(H2O)2](ClO4)2. The inner complex of 2-methylpyridine-6- carboxylic acid [Co(mepiac)2,2H2O)] was also isolated. In all cases, the magnetic properties, conductances, reflectance spectra, absorption spectra, and infrared spectra are in agreement with the concept that they are spin-free, six-coordinate octahedral complexes. The substance [Ni(mepic)2NO3]NO3 contains both bidentate and ionic nitrate.

Mössbauer and Infrared Spectra of Octahedral Complexes of Iron(II) Halides with Amides and Related Ligands

1972 ◽  
Vol 50 (2) ◽  
pp. 201-210 ◽  
Author(s):  
T. Birchall ◽  
M. F. Morris
Keyword(s):  
Infrared Spectra ◽  
Magnetic Measurements

A number of complexes of FeCl2 and FeBr2 with amides, ureas, aniline, and benzothiazole have been prepared and characterized by means of Mössbauer and i.r. spectroscopy, and magnetic measurements. The stoichiometries FeX2L, FeX2L2, FeX2L3, FeX2L4, and FeX2L6 have been found in which the iron is six coordinate. With the exception of an isobutyramide complex which is formulated as [Fe(BUA)6][FeCl4], complexes of the first three types are polymeric with bridging halogens, while FeX2L4 is monomeric and FeX2L6 is formulated as [FeL6]Cl2.

Some studies in inorganic complexes. XXIV. Copper(II) complexes of 2-acetamidopyridine and 2-methylpyridine-6-carboxylic acid

1969 ◽  
Vol 22 (9) ◽  
pp. 1835 ◽  
Author(s):  
KH Shaw ◽  
GJ Sutton
Keyword(s):  
Magnetic Properties ◽  
Carboxylic Acid ◽  
Infrared Spectra ◽  
Coordinate Structure ◽  
Inorganic Complexes ◽  
Methyl Pyridine

Complexes of copper(II) with 2-acetamidopyridine (acpy) and with 2- methyl-pyridine-6-carboxylic acid (mepiac-H) have been prepared. The compounds studied included [Cu(acpy)2Cl2], [Cu(acpy)2Br2], [Cu(acpy)2(NCS)2], [Cu(acpy)2(NO3)2], [Cu(acpy)2(H2O)ClO4]ClO4,H2O, [Cu(mepiac)(mepiac-H)Cl], [Cu(mepiac)(mepiac-H)-Br], [Cu(mepiac)(mepiac-H)BrH2O], and [Cu(mepiac)2H2O]. The magnetic properties, conductances, reflectance and solution spectra, as well as infrared spectra, are in agreement with the copper(II) complexes of acpy being six-coordinate and those of mepiac-H having a five- coordinate structure.

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

scholarly journals Tetranuclear Hetro-Metal [MnIII2NiII2] Complexes Involving Defective Double-Cubane Structure: Synthesis, Crystal Structures, and Magnetic Properties

2019 ◽  
Vol 5 (1) ◽  
pp. 14
Author(s):  
Yuki Suemitsu ◽  
Ryuji Matsunaga ◽  
Takashi Toyofuku ◽  
Yasunori Yamada ◽  
Masahiro Mikuriya ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Crystal Structures ◽  
Infrared Spectra ◽  
Magnetic Measurements ◽  
Metal Core ◽  
X Ray ◽  
Structure Synthesis ◽  
Elemental Analyses

Tetranuclear hetero-metal MnIII2NiII2 complexes, [Mn2Ni2(L)4(OAc)2] (1) and [Mn2Ni2(L)4(NO3)2] (2) [H2L = N-(2-hydroxymethylphenyl)-5,6-benzosalicylideneimine], have been synthesized and characterized by X-ray crystal structure analyses, infrared spectra, and elemental analyses. The structure analyses revealed that the complexes have a defective double-cubane metal core connected by μ3-alkoxo bridges. Complexes consist of two bis-μ-alkoxo bridged MnIIINiII heteronuclear units making a dimer-of-dimers structure. The double-cubane cores are significantly distorted due to an effect of syn–syn mode acetato or nitrato bridges. Magnetic measurements indicate that weak antiferromagnetic interactions (Mn-Ni = −0.66 ~ −4.19 cm–1) are dominant in the hetero-metal core.

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