4f-5f heterotrimetallic complexes exhibiting electrochemical and magnetic communication.
Novel 4f-5f complexes of U(IV) and Th(IV) with Yb have been prepared using a terpyridyl-functionalized ketimide linking group. These 4f-5f heterotrimetallic complexes (C5Me5)2An[-N=C(CH2C6H5)(tpyYb(C5Me5)2)]2 (where An = Th, U) exist in Yb(II/III) valence equilibria and exhibit rich electrochemical behavior consistent with electronic coupling between the actinide and Yb(II/III)tpy*- moieties. The magnetic response of the uranium complex, studied qualitatively using a subtraction method, is indicative of a coupled magnetic state between the U(IV) and Yb(III)tpy*- groups at low temperatures. Both the electrochemical and magnetic data are in agreement and are consistent with differences in participation of the actinide valence orbitals in the ketimide bonding.
Chemistry and Materials Science & Technology Divisions, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
Eric J
EJ
Schelter
Jacqueline M
JM
Veauthier
Joe D
JD
Thompson
Brian L
BL
Scott
Kevin D
KD
John
David E
DE
Morris
Jaqueline L
JL
Kiplinger