Solvent Effects on the Spin Crossover Properties of Iron(II) Imidazolylimine Complexes
AbstractA series of Fe(II) complexes, fac-[Fe(4-ima-Bp)3](Y)2⋅sol (Y = ClO4; sol = 3EtOH 1, 3MeOH 2; Y= BF4; sol = EtOH⋅4H2O 3, 4H2O 4 and 3.5MeCN 5) have been prepared and structurally and magnetically characterized. The low temperature structures of 1, 2 and 5 have been determined by X-ray crystallography with LS Fe(II) centres found in all cases. Extensive C–H···π interactions between the cations form 2D layers, which are linked to one another through N-H···O and O-H···O hydrogen bonds, resulting in high cooperativity. Despite 5 containing MeCN, N-H···O/F hydrogen bonds, and C–H···π and π-π interactions combine to give similar 2D layers. Magnetic measurements reveal moderately abrupt spin crossover for 1-4; becoming more gradual and only 50% complete in 1 due to solvent loss. The MeCN solvate shows more gradual SCO and reinforces how subtle changes in packing can significantly influence SCO behaviour. View Full-Text
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Sertphon, D.; Harding, P.; Murray, K.S.; Moubaraki, B.; Neville, S.M.; Liu, L.; Telfer, S.G.; Harding, D.J. Solvent Effects on the Spin Crossover Properties of Iron(II) Imidazolylimine Complexes. Crystals 2019, 9, 116.
Sertphon D, Harding P, Murray KS, Moubaraki B, Neville SM, Liu L, Telfer SG, Harding DJ. Solvent Effects on the Spin Crossover Properties of Iron(II) Imidazolylimine Complexes. Crystals. 2019; 9(2):116.Chicago/Turabian Style
Sertphon, Darunee; Harding, Phimphaka; Murray, Keith S.; Moubaraki, Boujemaa; Neville, Suzanne M.; Liu, Lujia; Telfer, Shane G.; Harding, David J. 2019. "Solvent Effects on the Spin Crossover Properties of Iron(II) Imidazolylimine Complexes." Crystals 9, no. 2: 116.
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