Spin crossover in a four-coordinate iron(II) complex |
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Authors: | Scepaniak Jeremiah J Harris T David Vogel Carola S Sutter Jörg Meyer Karsten Smith Jeremy M |
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Institution: | Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, New Mexico 88003, United States. |
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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 Mo?ssbauer 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. |
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