scholarly journals The Correlation between Reflectance Spectra and Magnetic Moments of Copper(II) Halide Complexes with PyridineN-Oxides

1967 ◽  
Vol 40 (7) ◽  
pp. 1738-1738 ◽  
Author(s):  
Michinobu Kato ◽  
Yoneichiro Muto ◽  
Hans B. Jonassen
Keyword(s):  
Magnetic Moments ◽  
Reflectance Spectra ◽  
Halide Complexes

scholarly journals Magnetic Moments and d–d Bands of Copper(II) Halide Complexes with Substituted PyridineN-Oxides and Some Related Ligands

1969 ◽  
Vol 42 (2) ◽  
pp. 417-431 ◽  
Author(s):  
Yoneichiro Muto ◽  
Michinobu Kato ◽  
Hans B. Jonassen ◽  
Louis Chopin Cusachs
Keyword(s):  
Magnetic Moments ◽  
Halide Complexes

Magnetic Moments of Some Copper(II) Halide Complexes with Substituted PyridineN-Oxides

1967 ◽  
Vol 40 (6) ◽  
pp. 1535-1536 ◽  
Author(s):  
Yoneichiro Muto ◽  
Michinobu Kato ◽  
Hans B. Jonassen ◽  
H. N. Ramaswamy
Keyword(s):  
Magnetic Moments ◽  
Halide Complexes

Coordination properties of β-alanine: new complexes with some transition metals cobalt(II), nickel(II), and copper(II)

1976 ◽  
Vol 54 (15) ◽  
pp. 2426-2431 ◽  
Author(s):  
Giuseppe Marcotrigiano ◽  
Ledi Menabue ◽  
Gian Carlo Pellacani
Keyword(s):  
Transition Metals ◽  
Carboxy Group ◽  
Electronic Spectra ◽  
Magnetic Moments ◽  
Chelating Agent ◽  
Neutral Ligand ◽  
Coordination Properties ◽  
Halide Complexes

The neutral six-coordinated tetragonal Co(β-ala)2•2H2O complex(β-ala = NH2CH2CH2COO−) was prepared. In this complex β-alanine acts as an O,N-chelating agent, as in the known Cu(β-ala)2•6H2O and Ni(β-ala)2•3H2O complexes. We also prepared some complexes of a type that is new for β-alanine, with stoichiometries such as M(β-alaH)2X2, M(β-alaH)4(ClO4)2 (M = Co and Ni), Cu(β-alaH)3(ClO4)2, and Cu(β-alaH)Cl2[Formula: see text] in which the ligand acts as a zwitterion and coordinates toward the carboxy group as a formally neutral ligand. The possibility of formulating the complexes as H2[M(β-ala)2X2] is discussed. The electronic spectra and the magnetic moments of the halide complexes are in accord with pseudo-tetrahedral, octahedral, and tetragonal stereochemistry for the cobalt(II), nickel(II), and copper(II) ions, respectively, while those of the perchlorate complexes are in accord with pseudooctahedral stereochemistry. The β-alanine hydrohalide salts and the bis(β-alaninium)tetrachlorocuprate complex were also prepared and are discussed.

Complexes of Oxamic Acid with Al(III), Ga(III), In(III), Tl(III), Y(III), Fe(III), Mn(II) and V(III)

1978 ◽  
Vol 33 (9) ◽  
pp. 987-989 ◽  
Author(s):  
J. K. Kouinis ◽  
J. M. Tsangaris ◽  
A. G. Galinos
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Diffuse Reflectance ◽  
Magnetic Moments ◽  
Reflectance Spectra ◽  
Trivalent Metal ◽  
Diffuse Reflectance Spectra ◽  
Trivalent Metal Ions

The preparation of complexes of oxamic acid with Al(III), Ga(III), In(III), Tl(III), Y(III), Fe(III), Mn(II) and V(III) is reported. From the study of the infrared and diffuse reflectance spectra and the magnetic moments (for the complexes of Fe(III), Mn(II) and V(III)) it is concluded that in all complexes the metal ion is coordinated with the carboxyl oxygen and the amidic nitrogen, after the ionization of one of the amidic hydrogens.Octahedral structures are proposed for all the complexes of the trivalent metal ions and the complex K2{Mn(oxamic)2} · 2 H2O.

Complexes of Oxamic Acid with Cu(II), Ni(II), Co(II) and Cr(III)

1977 ◽  
Vol 32 (6) ◽  
pp. 645-647 ◽  
Author(s):  
A. G. Galinos ◽  
J. M. Tsangaris ◽  
J. K. Kouinis
Keyword(s):  
Diffuse Reflectance ◽  
Magnetic Moments ◽  
Reflectance Spectra ◽  
Diffuse Reflectance Spectra

The preparation of the complexes of oxamic acid with Cu(II), Ni(II), Co(II) and Cr(III) is reported. From the study of IR, diffuse reflectance spectra and the magnetic moments it is concluded that in all complexes the metal is coordinated with the amidic nitrogen, after ionization of one amidic hydrogen, and with the carboxyl oxygen.Octahedral structures are proposed for the complexes K2[Ni(oxamic)2] · 2 H2O and K3[Cr(oxamic)3] and planar configurations for K2[Cu(oxamic)2] and K2[Co(oxamic)2].

Komplexe des N.N′-Bis(o-aminobenzyl)äthylendiamins mit Cu(II) und Ni(II) / Complexes of N,N′-bis(o-aminobenzyl)ethylenediamine with Cu(II) and NI(II)

1974 ◽  
Vol 29 (7-8) ◽  
pp. 538-541 ◽  
Author(s):  
J. M. Tsangaris ◽  
S. M. Paraskewas
Keyword(s):  
Solid State ◽  
Ir Spectra ◽  
Diffuse Reflectance ◽  
Magnetic Moments ◽  
Reflectance Spectra ◽  
Diffuse Reflectance Spectra ◽  
Uv Visible

The synthesis, IR spectra and UV-visible diffuse reflectance spectra of the complexes [Cu(abeda)]Cl2 and [Ni(abeda)]Cl£, where abeda = N,N′-bis(o-aminobenzyl)ethylenediamine, as well as the magnetic moments of the complexes in the solid state are reported and discussed.

Uranium(IV) trifluoromethanesulfonate and some ternary uranium(IV) trifluoromethanesulfonates

1987 ◽  
Vol 65 (2) ◽  
pp. 409-411 ◽  
Author(s):  
Madanmohan S. Gill ◽  
Anil K. Sethi ◽  
Rajendra D. Verma
Keyword(s):  
Room Temperature ◽  
Diffuse Reflectance ◽  
Magnetic Moments ◽  
Reflectance Spectra ◽  
X Ray Diffraction ◽  
X Ray ◽  
Diffuse Reflectance Spectra ◽  
Infrared Data

U(SO3CF3)4 and MIIUIV(SO3CF3)6, M = Mg, Mn, Fe, Zn, have been prepared by the reaction of their respective trifluoroacetates with HSO3CF3 acid in CF3COOH medium at room temperature. Infrared data indicate bidentate bridging —SO3CF3 groups in these compounds. Magnetic moments show the presence of uranium(IV) species. Diffuse reflectance spectra suggest six coordinate uranium(IV) although the presence of possible eight or higher coordinate uranium(IV) cannot be ruled out. X-ray diffraction studies reveal them to be definite entities.

Lanthanide(III) Complexes of Oxamic Acid

1981 ◽  
Vol 36 (6) ◽  
pp. 697-703 ◽  
Author(s):  
S. P. Perlepes ◽  
Th. F. Zafiropoulos ◽  
J. K. Kouinis ◽  
A. G. Galinos
Keyword(s):  
Spectral Data ◽  
Diffuse Reflectance ◽  
Magnetic Moments ◽  
Reflectance Spectra ◽  
Diffuse Reflectance Spectra ◽  
Bridging Ligand ◽  
Structural Types ◽  
Analytical Results ◽  
First Time

Abstract The preparation, for the first time, of the deprotonated complexes of oxamic acid with Ce(III), Pr(III), Nd(III), Sm(III), Eu(III), Dy(III), Ho(III) and Yb(III) is reported. Properties, analytical results, conductometric measurements, magnetic moments and spectral data (IR and diffuse reflectance spectra) are discussed in terms of possible structural types and the nature of the bonding. Oxamic acid acts as a bidentate non-bridging ligand.

Sign in / Sign up

Export Citation Format

Share Document