Consequences of a linear two-coordinate geometry for the orbital magnetism and Jahn-Teller distortion behavior of the high spin iron(II) complex Fe[N(t-Bu)2]2.
Mossbauer, EPR, magnetic susceptibility, and DFT studies of the unusual two-coordinate iron(II) amide Fe[N(t-Bu)(2)](2) show that it retains a linear N-Fe-N framework due to the nonbonding delta nature of the (xy, x(2)-y(2)) orbitals. The resulting near-degenerate ground state gives rise to a large magnetic moment and a remarkably large internal hyperfine field. The results confirm that extraordinary orbital magnetic effects can arise in linear transition metal complexes in which orbital degeneracies are not broken by Jahn-Teller or Renner-Teller distortions.
Reiff
William M
WM
Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, USA. w.reiff@neu.edu
Schulz
Charles E
CE
Whangbo
Myung-Hwan
MH
Seo
Jung In
JI
Lee
Yoon Sup
YS
Potratz
Gregory R
GR
Spicer
Charles W
CW
Girolami
Gregory S
GS