Preferred Label : Weller correlation;
IUPAC definition : Empirical correlation for the energy of full charge-transfer exciplex relative to
the ground state in i n /i -hexane as a function of the electrochemical one electron
standard reduction potential of the cation radical produced upon electron donation
and standard reduction potential of the acceptor measured in a polar solvent for the
donor (D) and the acceptor (A) involved \[Δ H({D} { }{A} {-},{hexane}) e\left [
E {0}({D} { \bullet }/{D}) - E {0}({A}/{A} {-\bullet }) \right ] eΔ E\] with E0(D
•/D) and E0(A/A-•) the standard electrode potentials of the donor and acceptor, respectively.;
Scope note : although not complying with the iupac recommended nomenclature for the standard electrode
potentials, traditionally the equation has been written as: dh d
a- hexane e eox0 ered0
0.15 0.10 0.15 0.10 ev witheox0the standard electrode
potential at which the oxidation occurs, and ered0the standard electrode potential
at which the reduction occurs. this writing of the first term within the square brackets
is misleading and not recommended.; the iupac recommendations for the sign and symbols of standard potentials are used
in the equation as written above.; in the case diethylaniline as donor and aromatic hydrocarbons as acceptors, the last
term on the right, i.e., e de 0.15 0.10 0.15 0.10
ev.this equation assumes a constant coulomb term and a constant entropy change within
a particular series of partners. e is the elementary charge.;
Origin ID : W06671;
See also
Empirical correlation for the energy of full charge-transfer exciplex relative to
the ground state in i n /i -hexane as a function of the electrochemical one electron
standard reduction potential of the cation radical produced upon electron donation
and standard reduction potential of the acceptor measured in a polar solvent for the
donor (D) and the acceptor (A) involved \[Δ H({D} { }{A} {-},{hexane}) e\left [
E {0}({D} { \bullet }/{D}) - E {0}({A}/{A} {-\bullet }) \right ] eΔ E\] with E0(D
•/D) and E0(A/A-•) the standard electrode potentials of the donor and acceptor, respectively.
