ChemInform Abstract: STUDY OF THE HYDROGEN FLUORIDE-AMMONIA-POTASSIUM FLUORIDE SYSTEM. DETERMINATION OF THE LIQUIDUS IN THE FUSIBLE DOMAIN AT AMBIENT TEMPERATURE AND ELECTRIC CONDUCTIVITIES

1981 ◽  
Vol 12 (37) ◽  
Author(s):  
J.-P. ESSON ◽  
H. PHAM ◽  
G. POURCELLY ◽  
M. ROLIN
Keyword(s):  
Ambient Temperature ◽  
Hydrogen Fluoride ◽  
Potassium Fluoride ◽  
Fluoride System

Determination of the Nucleophilicity of Tricarbonyliron Coordinated Cyclohepta-1,3,5-triene

1999 ◽  
Vol 64 (11) ◽  
pp. 1770-1779 ◽  
Author(s):  
Herbert Mayr ◽  
Karl-Heinz Müller
Keyword(s):  
Gibbs Energy ◽  
Ambient Temperature ◽  
Rate Constants ◽  
Second Order ◽  
Order Rate ◽  
Electrophilic Additions ◽  
Kinetics Of

The kinetics of the electrophilic additions of four diarylcarbenium ions (4a-4d) to tricarbonyl(η4-cyclohepta-1,3,5-triene)iron (1) have been studied photometrically. The second-order rate constants match the linear Gibbs energy relationship log k20 °C = s(E + N) and yield the nucleophilicity parameter N(1) = 3.69. It is concluded that electrophiles with E ≥ -9 will react with complex 1 at ambient temperature.

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