Measurement of P–P coupling constants in cis- and trans-square planar complexes

1968 ◽  
Vol 0 (3) ◽  
pp. 114-115
Author(s):  
R. G. Goodfellow
Keyword(s):  
Coupling Constants ◽  
Square Planar ◽  
Square Planar Complexes ◽  
Cis And Trans ◽  
In Cis

Square planar metal complexes of thiosemicarbazide

1968 ◽  
Vol 46 (20) ◽  
pp. 3241-3247 ◽  
Author(s):  
Roland A. Haines ◽  
Kenneth K. W. Sun
Keyword(s):  
Metal Complexes ◽  
General Formula ◽  
Trans Isomer ◽  
Diffuse Reflectance ◽  
Geometric Isomers ◽  
Neutral Species ◽  
Diffuse Reflectance Spectra ◽  
Square Planar ◽  
Square Planar Complexes ◽  
Cis And Trans

Square planar complexes of nickel(II), palladium(II), and platinum(II) containing the ligand thiosemicarbazide (Htsc) have been studied. Both the cis and trans geometric isomers have been obtained for the complexes with the general formula [M(tsc)2]2+ while only the trans isomer was obtained for the neutral species [M(tsc)2]. Infrared and diffuse reflectance spectra are presented and discussed with reference to the stereochemistry of the complexes.

Solvent, concentration, and temperature dependance of the platinum–phosphorus nuclear magnetic résonance coupling constants in cis- and trans-[PtCl2(PBu3n)2]

1976 ◽  
Vol 54 (17) ◽  
pp. 2733-2738 ◽  
Author(s):  
Keith R. Dixon ◽  
Martin Fakley ◽  
Alan Pidcock
Keyword(s):  
Chemical Shifts ◽  
Specific Model ◽  
Coupling Constants ◽  
Solvent Concentration ◽  
Reaction Field ◽  
Magnetic Resonance Coupling ◽  
Resonance Coupling ◽  
Temperature Dependance ◽  
Cis And Trans ◽  
In Cis

Studies of the effects of solvent, concentration and temperature on the 31P nmr parameters of cis- and trans-[PtCl2(PBun3)2] are reported. The coupling constants, 1JPt–P are markedly dependent upon all three variables but, in contrast to previous studies on non-coordination compounds, very little corresponding variation in chemical shifts is found. Results are discussed in terms of a solvent cavity model using reaction field, Stark and Macrae effects but it is concluded that a more specific model involving competitive solvation at platinum gives a better interpretation of the data.

scholarly journals Hydrogen Peroxide Oxidation of Coordinated Thiocyanate Ion in cis- and trans-[Coen2NH3NCS]2+: The Preparation and Properties of trans-[Coen2NH3CN]2+

1973 ◽  
Vol 51 (24) ◽  
pp. 4152-4158 ◽  
Author(s):  
Albert Richard Norris ◽  
James William Lennox Wilson
Keyword(s):  
Hydrogen Peroxide ◽  
Spectral Properties ◽  
Peroxide Oxidation ◽  
Reaction Conditions ◽  
Thiocyanate Ion ◽  
Hydrogen Peroxide Oxidation ◽  
Percent Conversion ◽  
Cis And Trans ◽  
In Cis

The hydrogen peroxide oxidation of thiocyanate ion in cis- and trans-[Coen2NH3NCS]2+ leads to the formation of the corresponding cis- and trans-cyanoammine- and diamminebis(ethylenediamine)cobalt-(III) complexes. The spectral properties of the previously unreported trans-[Coe2NH3CN]2+ are reported and compared to the spectral properties of the cis-isomer.Observations are made concerning the reaction conditions which favor a high percent conversion of trans-[Coen2NH3NCS]2+ to trans-[Coen2NH3CN]2+.

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