Spin-State Patterning in an Iron(II) Tripodal Spin-Crossover Complex

Journal article

A mononuclear iron(II) complex that displays a gradual two-step spin-crossover (SCO) transition is reported. The intermediate plateau (IP) occurs between HS0.40LS0.60 and HS0.30LS0.70 (HS = high spin; LS = low spin) ratios over the region of ca. 190-170 K. A phase change occurs at the IP, breaking the symmetry, resulting in six independent SCO sites compared to one at the 100% HS and LS plateau regions, respectively. Variableerature X-ray photoelectron spectroscopy shows that the SCO behavior is completely reversible among the HS, IP, and LS regions. The results both confirm and extend the related results for the above system described by Halcrow et al. (Kulmaczewski, R.; Cespedes, O.; Halcrow, M. A. Gradual Thermal Spin-Crossover Mediated By a Reentrant Z′ = 1 Z′ = 6 Z′ = 1 Phase Transition, Inorg. Chem. 2017, 56, 3144-3148) in a recent report

Authors: Li, L; Neville, SM; Craze, AR; Clegg, JK; Sciortino, NF

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: American Chemical Society
• Journal: ACS Omega
• Volume: 2
• Issue: 7
• Pages: 3349-3353
• Publication date: 2017-07-10
• DOI: 10.1021/acsomega.7b00630
• EISSN: 2470-1343
• ISSN: 2470-1343
• Language: English
• Keywords: X-ray photoelectron spectroscopy; Spin transition; Spin crossover; Spin (aerodynamics); Nuclear magnetic resonance; Condensed matter physics; Physics; Spin states; Plateau (mathematics); Chemistry; Thermodynamics; Materials science; Phase (matter)