TY - JOUR
T1 - Crystal Structures and Spin-Crossover Behavior of Iron(II) Complexes with Chiral and Racemic Ligands
AU - Sekimoto, Yusuke
AU - Karim, Mohammad Razaul
AU - Saigo, Naoto
AU - Ohtani, Ryo
AU - Nakamura, Masaaki
AU - Hayami, Shinya
N1 - Funding Information:
This work was supported by JSPS Grant-in-Aid for Young Scientists (B) 15K17833 and JSPS Grant-in-Aid for Scientific Research on Innovative Areas (Dynamical Ordering & Integrated Functions) 16H00777. This work was also supported by KAKENHI Grant-in-Aid for Scientific Research (B) 26288026.
Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/2/17
Y1 - 2017/2/17
N2 - Chiral iron(II) complexes, [Fe{(R)-L}2(NCS)2] (1) and [Fe{(S)-L}2(NCS)2] (2), and racemic complex [Fe(rac)-L)2(NCS)2] (3) {L = α-methyl-N-(2-pyridinylmethylene)cyclohexanemethanamine} were synthesized. Their structures and magnetic properties were investigated by X-ray crystallography, magnetic susceptibility measurements, and Mössbauer spectroscopy. Complexes 1 and 2 crystallize in the trigonal system with space group P3121 and P3221, respectively. All complexes exhibit spin-crossover (SCO) behavior and light induced excited spin state trapping (LIESST) effects at 532 nm. Complexes 1 and 2 show similar gradual SCO behavior, and complex 3 shows more gradual SCO, which seems to be a result of the different crystal packing, as complex 3 is the symmetric isomer but 1 and 2 are asymmetric.
AB - Chiral iron(II) complexes, [Fe{(R)-L}2(NCS)2] (1) and [Fe{(S)-L}2(NCS)2] (2), and racemic complex [Fe(rac)-L)2(NCS)2] (3) {L = α-methyl-N-(2-pyridinylmethylene)cyclohexanemethanamine} were synthesized. Their structures and magnetic properties were investigated by X-ray crystallography, magnetic susceptibility measurements, and Mössbauer spectroscopy. Complexes 1 and 2 crystallize in the trigonal system with space group P3121 and P3221, respectively. All complexes exhibit spin-crossover (SCO) behavior and light induced excited spin state trapping (LIESST) effects at 532 nm. Complexes 1 and 2 show similar gradual SCO behavior, and complex 3 shows more gradual SCO, which seems to be a result of the different crystal packing, as complex 3 is the symmetric isomer but 1 and 2 are asymmetric.
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U2 - 10.1002/ejic.201601232
DO - 10.1002/ejic.201601232
M3 - Article
AN - SCOPUS:85012909587
SN - 1434-1948
VL - 2017
SP - 1049
EP - 1053
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
IS - 7
ER -