Heteroleptic iron(<scp>ii</scp>) complexes of chiral 2,6-bis(oxazolin-2-yl)-pyridine (PyBox) and 2,6-bis(thiazolin-2-yl)pyridine ligands – the interplay of two different ligands on the metal ion spin sate
作者:Namrah Shahid、Kay E. Burrows、Christopher M. Pask、Oscar Cespedes、Mark J. Howard、Patrick C. McGowan、Malcolm A. Halcrow
DOI:10.1039/d2dt00393g
日期:——
Complexation of Fe[ClO4]2·6H2O by 1 equiv. 2,6-bis((4S)-4-phenyl-4,5-dihydrooxazol-2-yl)pyridine ((S)-L1Ph) and 2,6-bis((4R)-4-phenyl-4,5-dihydrothiazol-2-yl)pyridine ((R)-L2Ph) cleanly affords [Fe((S)-L1Ph)((R)-L2Ph)][ClO4]2; [Fe((R)-L1iPr)((S)-L2iPr)][ClO4]2 (L1iPr = 2,6-bis(4-isopropyl-4,5-dihydrooxazol-2-yl)pyridine; L2iPr = 2,6-bis(4-isopropyl-4,5-dihydrothiazol-2-yl)pyridine) was prepared by
Fe[ClO 4 ] 2 ·6H 2 O的络合1当量。2,6-双((4 S )-4-苯基-4,5-二氢恶唑-2-基)吡啶(( S )-L 1 Ph)和2,6-双((4 R )-4-苯基-4,5-dihydrothiazol-2-yl)pyridine (( R )-L 2 Ph) 干净地提供 [Fe(( S )-L 1 Ph)(( R )-L 2 Ph)][ClO 4 ] 2;[Fe(( R )-L 1 iPr)(( S )-L 2 iPr)][ClO 4 ] 2 (L 1iPr = 2,6-双(4-异丙基-4,5-二氢恶唑-2-基)吡啶; L 2 iPr = 2,6-双(4-异丙基-4,5-二氢噻唑-2-基)吡啶)是通过类似的路线制备的。化合物在溶液中表现出热自旋交叉,温度介于相应的 [Fe(( R )-L 1 R)(( S )-L 1 R)][ClO 4 ] 2和 [Fe(( R )-