A -- General symbol for oxidant or electron acceptor
A* -- Triplet excited state of species A
A2– -- General symbol for fully dissociated form of reductant AH2
Ai -- Absorbance of species i
aA -- Activity of species A
AcOH -- Acetic acid
AH– -- General symbol for partially dissociated form of reductant AH2
AH2 -- General symbol for reductant or electron donor
Approx. -- Approximate
AQS– -- 9,10-Anthraquinone-2-sulfonate (Tables, 1.3.1)
Au. -- This author (PW)
bpy -- 2,2'-Bipyridine
t-BuOH -- tert-Butyl alcohol (2-Methyl-propan-2-ol)
BV2+ -- Benzyl viologen (1,1'-Dibenzyl-4,4'-bipyridinium) (Tables, 3.8.39)
CAT -- Catechol (1,2-Dihydroxybenzene) (Tables, 5.2.1)
Calc. -- Calculated
Calcn. -- Calculation
Consts. -- Constants
Cyc. v. -- Cyclic voltammetry
Diff. pulse volt. -- Differential pulse voltammetry
DMAP -- 4-(Dimethylamino)phenol (Tables, 5.1.8)
DQ -- Duroquinone (2,3,5,6-Tetramethyl-1,4-benzoquinone) (Tables 1.1.7)
E -- General symbol for reduction potential
Eo -- Standard reduction potential (Introduction, Sec. 4.2)
E0 -- Formal reduction potential (Introduction, Secs. 4.3, 4.4)
Eh -- Reduction potential of half-cell relative to s.h.e. (Introduction, Sec. 4.2)
Em -- Mid-point potential of half-cell (Introduction, Sec. 4.3)
Emi -- Mid-point potential of half-cell at pH = i (Introduction, Sec. 4.4)
Eq. -- Equation
Extrap. -- Extrapolated
F -- The Faraday constant = 9.649 x 104 C mol–1
fA -- Activity coefficient of species A
f(I) -- Ionic strength function (Introduction, Sec. 3.8)
Fp -- Flash photolysis
Glycol -- Ethylene glycol (1,2-Ethanediol)
GlyTyr -- Glycyl-L-tyrosine
h -- Planck's constant = 6.626 x 10–34 J s
HQ -- Hydroquinone (1,4-Dihydroxybenzene) (Tables, 5.4.1)
I -- Ionic strength
k -- Rate constant
K -- Equilibrium constant (expressed in terms of activities)
K' -- Equilibrium constant (expressed in terms of concentrations)
Ka -- Dissociation constant of an acid or the conjugate acid of a base
KD -- Equilibrium constant for dissociation of dimer (Introduction, Sec. 6.3)
Kf -- Equilibrium constant of semiquinone formation equilibrium (Introduction, Sec. 5.1)
Kfi -- Apparent semiquinone formation constant at pH = i (Introduction, Sec. 5.2)
Kin. -- Kinetics
MV2+ -- Methyl viologen (1,1'-Dimethyl-4,4'-bipyridinium) (Tables, 3.8.2)
n -- Number of electrons transferred in the oxidant/reductant couple
NAD+ -- Nicotinamide-adenine dinucleotide (Tables, 4.4.6)
NADH -- Nicotinamide-adenine dinucleotide, reduced form (Tables, 8.2.1)
n.c.e. -- Normal calomel electrode ( 1 mol dm–3 KCl)
Pol. -- Polarography
Pot. -- Potentiometry
Potl. -- Potential
2-PrOH -- isoPropyl alcohol (Propan-2-ol)
Q -- General symbol for quinones
QH2 -- General symbol for hydroquinones
R -- The gas constant = 8.314 J K–1 mol–1
Rad. -- Radiolysis
Rec. -- Recommended
Reduct. -- Reduction
Ref. -- Reference
So -- Sum of all oxidant species (Introduction, Sec. 4.3)
Sr -- Sum of all reductant species (Introduction, Sec. 4.3)
s.c.e. -- Saturated calomel electrode
Sec. -- Section
s.h.e. -- Standard (normal) hydrogen electrode
Spect. -- Spectrophotometry
T -- Absolute temperature
TMP -- 3,4,7,8-Tetramethylphenanthroline
TMPD -- N,N,N',N'-Tetramethyl-p-phenylenediamine (Tables, 6.1.5)
TQ2+ -- Triquat (7,8-Dihydro-6H-dipyrido[1,2-a:2',1'-c]diazapinediium) (Tables, 3.4.1)
v/v -- Parts by volume
zA -- Net charge (valency) on ion A
nu -- Frequency
sigma–p -- Hammett sigma substituent constant (from para substituted phenols)
DeltaE -- Difference in reduction potentials (Introduction, Sec. 1)
DeltaG -- Free energy change accompanying reaction