Concerning the photophysical properties of Re2(4+) and Re2(6+) carboxylate compounds.
The preparation and structure of Re(2)(dppm)(2)(O(2)CC(6)H(4)-p-NO(2))(2)Cl(2), where dppm = Ph(2)PCH(2)PPh(2), is reported together with its photophysical properties (absorption, steady state emission, fs- and ns-transient absorption spectroscopy) and electrochemistry. These data are compared with photophysical studies on the previously reported Re(2)(dppm)(2)(O(2)CCH(3))(2)Cl(2). The preparation of the complex Re(2)(O(2)CC(6)H(4)-p-NO(2))(4)Cl(2) is also reported together with its photophysical properties which allows for a comparison of the electronic structures and photophysical states of Re(2)(4+) and Re(2)(6+) containing complexes having MM configurations σ(2)π(4)δ(2)δ(*2) and σ(2)π(4)δ(2), respectively. An interesting comparison is also made with the related MM quadruply bonded complexes of molybdenum and tungsten.
Department of Chemistry, The Ohio State University, 100 W. 18th Ave., Columbus, OH 43210, USA.
Brian G
BG
Alberding
Malcolm H
MH
Chisholm
Judith C
JC
Gallucci
Terry L
TL
Gustafson
Carly R
CR
Reed
Claudia
C
Turro