TY - JOUR
T1 - Lanthanide dicyanoaurate coordination polymers containing 1,10-phenanthroline
T2 - Synthesis, structure, and luminescence
AU - Hendrich, Jeffrey M.
AU - White, Frankie D.
AU - Sykora, Richard E.
N1 - Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/11/1
Y1 - 2021/11/1
N2 - The synthesis of two novel lanthanide dicyanoaurates containing the bidentate ligand 1,10-phenanthroline (phen) have been carried out by reaction of select lanthanide nitrate salts with phen and potassium dicyanoaurate. The resultant compounds, [Ln(C12H8N2)(H2O)2{Au(CN)2}3] (Ln = Gd, Tb), are isostructural as established by single-crystal X-ray diffraction studies. Prominent structural features in these one-dimensional polymeric compounds are the existence of hexameric aurophilic interactions containing kinked Au6 units, π-stacking from partial phen ring alignment, and strong H-bonding interactions. Photoluminescence measurements illustrate that [Tb(C12H8N2)(H2O)2{Au(CN)2}3] displays enhanced Tb-based emission due to intramolecular energy transfer from the coordinated ligands while [Gd(C12H8N2)(H2O)2{Au(CN)2}3], which lacks low-lying electronic states, exhibits broad-band ligand-based emission.
AB - The synthesis of two novel lanthanide dicyanoaurates containing the bidentate ligand 1,10-phenanthroline (phen) have been carried out by reaction of select lanthanide nitrate salts with phen and potassium dicyanoaurate. The resultant compounds, [Ln(C12H8N2)(H2O)2{Au(CN)2}3] (Ln = Gd, Tb), are isostructural as established by single-crystal X-ray diffraction studies. Prominent structural features in these one-dimensional polymeric compounds are the existence of hexameric aurophilic interactions containing kinked Au6 units, π-stacking from partial phen ring alignment, and strong H-bonding interactions. Photoluminescence measurements illustrate that [Tb(C12H8N2)(H2O)2{Au(CN)2}3] displays enhanced Tb-based emission due to intramolecular energy transfer from the coordinated ligands while [Gd(C12H8N2)(H2O)2{Au(CN)2}3], which lacks low-lying electronic states, exhibits broad-band ligand-based emission.
KW - 1,10-Phenanthroline
KW - Dicyanoaurate
KW - Energy transfer
KW - Lanthanide
KW - Photoluminescence
KW - Single-crystal X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=85112825805&partnerID=8YFLogxK
U2 - 10.1016/j.ica.2021.120562
DO - 10.1016/j.ica.2021.120562
M3 - Article
AN - SCOPUS:85112825805
SN - 0020-1693
VL - 527
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
M1 - 120562
ER -