Electronic spectra of some fluoride complexes of second- and third-row transition metals

1966 ◽  
pp. 18 ◽  
Author(s):  
D. H. Brown ◽  
D. R. Russell ◽  
D. W. A. Sharp
Keyword(s):  
Transition Metals ◽  
Electronic Spectra ◽  
Fluoride Complexes

Electronic Spectra of Cesium Fluoride Complexes of Pentavalent Neptunium

1970 ◽  
Vol 52 (4) ◽  
pp. 1664-1669 ◽  
Author(s):  
L. P. Varga ◽  
L. B. Asprey ◽  
T. K. Keenan ◽  
R. A. Penneman
Keyword(s):  
Electronic Spectra ◽  
Cesium Fluoride ◽  
Fluoride 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.

Electronic Spectra of Weak‐Field Fluoride Complexes of Tetravalent Neodymium

1968 ◽  
Vol 49 (10) ◽  
pp. 4674-4679 ◽  
Author(s):  
Louis P. Varga ◽  
Larned B. Asprey
Keyword(s):  
Electronic Spectra ◽  
Weak Field ◽  
Fluoride Complexes
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