Exploring the Promotion of Synthons of Choice: Halogen Bonding in Molecular Lanthanide Complexes Characterized via X-ray Diffraction, Luminescence Spectroscopy, and Magnetic Measurements
- George Washington Univ., Washington, DC (United States). Dept. of Chemistry
- Cardiff Univ., Wales (United Kingdom). School of Chemistry
- Univ. of Ottawa, Ottawa, ON (Canada). Dept. of Chemistry and Biomolecular Sciences
Promotion of a synthon of choice for the non-covalent assembly of lanthanide tectons represents both a noteworthy challenge and opportunity within Ln(III) hybrid materials. We have developed a system wherein some control can be exercised over supramolecular assembly and, as part of continued efforts to improve this process we have generated a family of ten new lanthanide (Ln = Sm3+-Lu3+)-2,4,6-trichlorobenzoic acid-1,10- phenanthroline molecular complexes. Delineation of criteria for promoting assembly via halogen based interactions was introduced previously and is refined herein based on the characterization of complexes 1-10 via single crystal X-ray diffraction. Direct comparison of means of supramolecular assembly for 1-10 with isostructural Ln-pchlorobenzoic acid-1,10-phenathroline analogues verifies that increasing the number of halogens at the periphery of a tecton is one route that increases the frequency of halogen bonding interactions. Additionally, solid-state visible and near-IR photoluminescence and luminescent lifetime data were collected for complexes 1 (Sm3+), 2 (Eu3+), 4 (Tb3+), 5 (Dy3+), 6 (Ho3+), 7 (Er3+), and 9 (Yb3+) and characteristic emission was observed for all complexes except 6. Further, direct current magnetic susceptibility measurements were carried out for complexes 5 (Dy3+) and 7 (Er3+), and two slow magnetic relaxation processes were characterized using alternating current magnetic susceptibility measurements for 5.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Materials Science of Actinides (MSA)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- SC0001089
- OSTI ID:
- 1470041
- Alternate ID(s):
- OSTI ID: 1399274
- Journal Information:
- Zeitschrift fuer Anorganische und Allgemeine Chemie, Journal Name: Zeitschrift fuer Anorganische und Allgemeine Chemie Journal Issue: 23 Vol. 643; ISSN 0044-2313
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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