TY - JOUR
T1 - Synthesis, crystal structure, luminescent properties, and magnetic properties of lanthanide(III) complexes containing the chiral (S,S/R,R)-N,N'-bis(3,5-dinitrosalicylidene)-1,2-cyclohexanediamine ligand
AU - Jeon, Soyoung
AU - Jeong, Yuri
AU - Ngoc Tram Anh, Le
AU - Ju, Jeyun
AU - Cho, Daeheum
AU - Jung Jang, Yoon
AU - Tokunaga, Ryuya
AU - Hayami, Shinya
AU - Sik Min, Kil
N1 - Publisher Copyright:
© 2023 The Korean Society of Industrial and Engineering Chemistry
PY - 2023/12/25
Y1 - 2023/12/25
N2 - In this work, we report novel enantiopure mononuclear complexes (teaH)[Ln((S,S)-dnsalcd)2] and (teaH)[Ln((R,R)-dnsalcd)2] (Ln = Eu3+ for 1 and 4, Tb3+ for 2 and 5, and Sm3+ for 3 and 6), where teaH = triethylammonium and (S,S/R,R)-H2dnsalcd = (S,S/R,R)-N,N'-bis(3,5-dinitrosalicylidene)-1,2-cyclohexanediamine. Their unique structural features have been studied by single crystal diffraction and chiral and magnetic properties have been investigated by circular dichroism and susceptibility, respectively. Notably, 1 and 3 were found to be isomorphous and exhibited a single intramolecular π-π interaction between two (S,S)-dnsalcd2- ligands. In contrast, 2 and 5 were found to be isomorphous and displayed two intramolecular π-π interactions between two (S,S/R,R)-dnsalcd2- ligands. Interestingly, strong Eu3+/Sm3+-based emissions in the solid and solution states were observed by efficient antenna effects due to the π-π interaction modes of the coordinated ligands. Furthermore, density functional theory calculations indicated that 1 contained a single localized benzene group in the highest occupied molecular orbital (HOMO), whereas 2 exhibited full delocalization via π-π interactions in the HOMO.
AB - In this work, we report novel enantiopure mononuclear complexes (teaH)[Ln((S,S)-dnsalcd)2] and (teaH)[Ln((R,R)-dnsalcd)2] (Ln = Eu3+ for 1 and 4, Tb3+ for 2 and 5, and Sm3+ for 3 and 6), where teaH = triethylammonium and (S,S/R,R)-H2dnsalcd = (S,S/R,R)-N,N'-bis(3,5-dinitrosalicylidene)-1,2-cyclohexanediamine. Their unique structural features have been studied by single crystal diffraction and chiral and magnetic properties have been investigated by circular dichroism and susceptibility, respectively. Notably, 1 and 3 were found to be isomorphous and exhibited a single intramolecular π-π interaction between two (S,S)-dnsalcd2- ligands. In contrast, 2 and 5 were found to be isomorphous and displayed two intramolecular π-π interactions between two (S,S/R,R)-dnsalcd2- ligands. Interestingly, strong Eu3+/Sm3+-based emissions in the solid and solution states were observed by efficient antenna effects due to the π-π interaction modes of the coordinated ligands. Furthermore, density functional theory calculations indicated that 1 contained a single localized benzene group in the highest occupied molecular orbital (HOMO), whereas 2 exhibited full delocalization via π-π interactions in the HOMO.
KW - Chiral ligand
KW - Crystal structure
KW - DFT calculation
KW - Lanthanide ion
KW - Luminescence
KW - Magnetism
UR - http://www.scopus.com/inward/record.url?scp=85169907151&partnerID=8YFLogxK
U2 - 10.1016/j.jiec.2023.07.059
DO - 10.1016/j.jiec.2023.07.059
M3 - Article
AN - SCOPUS:85169907151
SN - 1226-086X
VL - 128
SP - 275
EP - 285
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
ER -