The C-O stretch as an unprecedently large spectral marker for the electron transfer between Copper(II) and a phenolate anion.
An unprecedented red shift of more than 200 cm(-1) in the vibrational frequency of the C-O bond in the [Cu(PhO)Ln]+ complex (PhO = phenoxy), dependent on the number n of additional ligands L, is reported. Upon change of n from 1 to 2, the spin density is shifted from the aromatic ring to the oxygen and copper atoms, which is reflected in the bond order and thus vibrational frequency of the C-O bond.
Milko
Petr
P
Faculty of Science, Department of Organic Chemistry, Charles University in Prague, Hlavova 8, 12843 Prague 2, Czech Republic.
Roithová
Jana
J
Tsierkezos
Nikos
N
Schröder
Detlef
D
D002413:Cations, Divalent / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry; D010636:Phenols / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry; D013055:Spectrophotometry, Infrared / Q000379:methods
D002413:Cations, Divalent; D009942:Organometallic Compounds; D010636:Phenols; D011725:Pyridines; C450681:phenyllithium; C042329:phenoxy radical; D003300:Copper