Quinoline-based tetradendate nitrogen ligands stabilize the bis(micro-oxo) dinuclear manganese(iii,iii) core.
Quinoline-based, tetradentate nitrogen ligands, N,N'-bis(2-quinolylmethyl)-N,N'-dialkyl-1,2-ethanediamine (alkyl = methyl, bqdmen; ethyl, bqdeen; isopropyl, bqdpen), have been investigated as the supporting ligands for the formation of bis(micro-oxo) dinuclear manganese complexes. Bis(micro-oxo)Mn(2)(iii,iii) complexes and were obtained for bqdmen and bqdeen, respectively, as evidenced by X-ray crystallography, whereas bqdpen did not afford any manganese complexes due to its steric bulk. Complexes and exhibit highly positive Mn(2)(iii,iii)/Mn(2)(iii,iv) and Mn(2)(iii,iv)/Mn(2)(iv,iv) redox couples relative to the corresponding pyridine-ligated (micro-O)(2)Mn(2)(iii,iii) complexes.
Mikata
Yuji
Y
KYOUSEI Science Center, Nara Women's University, Nara, 630-8506, Japan. mikata@cc.nara-wu.ac.jp
So
Haruka
H
Yamashita
Azusa
A
Kawamura
Ayano
A
Mikuriya
Masahiro
M
Fukui
Kôichi
K
Ichimura
Akio
A
Yano
Shigenobu
S
D018360:Crystallography, X-Ray; D004563:Electrochemistry; D008024:Ligands; D008345:Manganese / Q000737:chemistry*; D015394:Molecular Structure; D009584:Nitrogen / Q000737:chemistry*; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010084:Oxidation-Reduction; D011804:Quinolines / Q000737:chemistry*
D008024:Ligands; D009942:Organometallic Compounds; D011804:Quinolines; D008345:Manganese; C037219:quinoline; D009584:Nitrogen