Single-crystal polarized electronic spectra, ligand field analysis, and vibronic analysis of olefin complexes of square-planar platinum(II)

1987 ◽  
Vol 26 (25) ◽  
pp. 4204-4208 ◽  
Author(s):  
Huey Rong C. Jaw ◽  
Tsu Hsin Chang ◽  
Jeffrey I. Zink
Keyword(s):  
Single Crystal ◽  
Electronic Spectra ◽  
Field Analysis ◽  
Ligand Field ◽  
Square Planar ◽  
Vibronic Analysis

Synthesis and structure of 4-methylpyridine complexes of cobalt(II) and nickel(II) hexafluorophosphate and hexafluoroarsenate

1978 ◽  
Vol 56 (7) ◽  
pp. 985-991 ◽  
Author(s):  
Raymond M. Morrison ◽  
Robert C. Thompson
Keyword(s):  
Magnetic Properties ◽  
Field Strength ◽  
Single Crystal ◽  
Infrared Spectra ◽  
Electronic Spectra ◽  
Preliminary Report ◽  
Ligand Field ◽  
X Ray Diffraction ◽  
X Ray ◽  
Square Planar

The complexes M(4mepy)4A2 and M(H2O)2(4mepy)8A2 (where M is Ni or Co and A is PF6 or AsF6) have been prepared and their electronic spectra and magnetic properties studied. A preliminary report is made of single crystal X-ray diffraction studies on Ni(H2O)2(4mepy)8(PF6)2, Co(H2O)2(4mepy)8(PF6)2, and Co(4mepy)4(PF6)2. All of the complexes have structures involving complex cations and non-coordinated anions, consistent with extremely weak ligating abilities for both PF6− and AsF6−. Cations identified and characterized are the squashed tetrahedral [Co(4mepy)4]2+ ion, the square planar [Ni(4mepy)4]2+ ion, and the tetragonal [Co(4mepy)4((4mepy)2H2O)2]2+and [Ni(4mepy)4((4mepy)2H2O)2]2+ ions. The ligand field strength of 4-methylpyridine is found to be indistinguishable from that of pyridine in these complexes. Infrared spectra are reported and infrared criteria for establishing the presence of non-coordinated anions in PF6− and AsF6− complexes are suggested.

ChemInform Abstract: SINGLE CRYSTAL ELECTRONIC SPECTRA AND LIGAND FIELD PARAMETERS OF SOME NICKEL(II) AMINE-ISOTHIOCYANATO AND AMINE-NITRITO COMPLEXES

1976 ◽  
Vol 7 (12) ◽  
pp. no-no
Author(s):  
IVANO BERTINI ◽  
DANTE GATTESCHI ◽  
ANDREA SCOZZAFAVA
Keyword(s):  
Single Crystal ◽  
Electronic Spectra ◽  
Ligand Field ◽  
Ligand Field Parameters

ChemInform Abstract: LIGAND FIELD ANALYSIS OF SUBSTITUTION REACTIONS IN SQUARE PLANAR PT(II) COMPLEXES

1975 ◽  
Vol 6 (2) ◽  
pp. no-no
Author(s):  
J. VRANCKX ◽  
L. G. VANQUICKENBORNE
Keyword(s):  
Field Analysis ◽  
Ligand Field ◽  
Substitution Reactions ◽  
Square Planar

Single crystal electronic spectra and ligand field parameters of some nickel(II) amine-isothiocyanato and amine-nitrito complexes

1976 ◽  
Vol 15 (1) ◽  
pp. 203-207 ◽  
Author(s):  
Ivano. Bertini ◽  
Dante. Gatteschi ◽  
Andrea. Scozzafava
Keyword(s):  
Single Crystal ◽  
Electronic Spectra ◽  
Ligand Field ◽  
Ligand Field Parameters

The electronic spectra and magnetic behaviour of some dithiocacodylate complexes

1971 ◽  
Vol 24 (8) ◽  
pp. 1587 ◽  
Author(s):  
AT Casey ◽  
DJ Mackey ◽  
RL Martin
Keyword(s):  
Field Strength ◽  
Electronic Spectrum ◽  
Electronic Spectra ◽  
Magnetic Behaviour ◽  
The Other ◽  
Ligand Field ◽  
Ionic Character ◽  
Nephelauxetic Effect ◽  
Other Hand ◽  
Square Planar

The large nephelauxetic effect and low ligand field strength produced by the dithiocacodylate group [(CH3)2AsS2-] in complexes with Ni2+, Co2+, and Cr3+ is explained in terms of significant covalency of the metal- sulphur bonds. The Mn2+ compound, however, has properties consistent with considerable ionic character. ��� The electronic spectrum and magnetic behaviour of bisdithiocacodylato-cobalt(II) can be better interpreted in terms of tetrahedral rather than octahedral CoSx microsymmetry. On the other hand, the Ni2+ compound is square-planar and both the Mn2+ and Cr3+ compounds appear to be octahedrally coordinated by sulphur atoms.

Ligand field analysis of substitution reactions in square planar Pt(II) complexes

1974 ◽  
Vol 11 ◽  
pp. 159-163 ◽  
Author(s):  
J. Vranckx ◽  
L.G. Vanquickenborne
Keyword(s):  
Field Analysis ◽  
Ligand Field ◽  
Substitution Reactions ◽  
Square Planar
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