title: Spin crossover in a four-coordinate iron(II) complex.
abstract: The four-coordinate iron(II) phosphoraniminato complex PhB(MesIm)(3)Fe-N═PPh(3) undergoes an S = 0 to S = 2 spin transition with T(C) = 81 K, as determined by variable-temperature magnetic measurements and Mössbauer spectroscopy. Variable-temperature single-crystal X-ray diffraction revealed that the S = 0 to S = 2 transition is associated with an increase in the Fe-C and Fe-N bond distances and a decrease in the N-P bond distance. These structural changes have been interpreted in terms of electronic structure theory.
authors.affiliation: Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, New Mexico 88003, United States.
authors.forename: Jeremiah J
authors.initials: JJ
authors.lastname: Scepaniak
authors.forename: T David
authors.initials: TD
authors.lastname: Harris
authors.forename: Carola S
authors.initials: CS
authors.lastname: Vogel
authors.forename: Jörg
authors.initials: J
authors.lastname: Sutter
authors.forename: Karsten
authors.initials: K
authors.lastname: Meyer
authors.forename: Jeremy M
authors.initials: JM
authors.lastname: Smith